CP VIOLATION AND CKM PHASES FROM TIME-DEPENDENCES OF UNTAGGED B s DECAYS a ROBERT FLEISCHER
|
|
- Nathaniel Burke
- 5 years ago
- Views:
Transcription
1 hep-ph/ September 1996 CP VIOATION AND CKM PASES FROM TIME-DEPENDENCES OF UNTAGGED B s DECAYS a ROBERT FEISCER Institut ür Theoretische Teilchenphysik, Universität Karlsruhe, D Karlsruhe, Germany The B s system is analyzed in light o a possible width dierence Γ s between its mass eigenstates. I Γ s is sizable, untagged B s-meson decays may allow a probe o CP violation and moreover the extraction both o the Wolenstein parameter η and o the notoriously diicult to measure angle γ o the unitarity triangle. To accomplish this ambitious task, time-dependent angular distributions or untagged B s decays into admixtures o CP eigenstates and channels that are caused by b cu s quark-level transitions play a key role. The work described here was done in collaboration with Isard Dunietz. 1 Introduction The time-evolution due to Bs 0 B0 s mixing is governed by the B s mass eigenstates Bs eavy and Bs ight which are characterized by their mass eigenvalues M (s), M (s) and decay widths Γ (s), Γ(s). Because o these mixing eects, oscillatory M s t terms with M s M (s) M (s) show up in the time-dependent transition rates 1 Γ(Bs 0 (t) ) and Γ(Bs(t) 0 ) describing decays o initially present Bs 0 and Bs 0 mesons into a inal state, respectively. The strength o the Bs 0 B0 s oscillations is measured by the mixing parameter x s M s /Γ s,whereγ s (Γ (s) +Γ(s) )/2. Within the Standard Model one expects 2 x s = O(20) implying very rapid Bs 0 B0 s oscillations which require an excellent vertex resolution system to keep track o the M s t terms. That is obviously a ormidable experimental task. owever, as pointed out by Dunietz 3,itmay not be necessary to trace the rapid M s t oscillations in order to obtain insights into the mechanism o CP violation. This remarkable eature is due to the expected sizable width dierence 4 Γ s Γ (s) Γ(s). The major contributions to Γ s, which may be as large as O(20%) o the average decay width Γ s, originate rom b cc s transitions into inal states that are common both to Bs 0 and B0 s. Because o this width dierence already untagged B s rates, which are deined by Γ[(t)] Γ(B 0 s (t) )+Γ(B 0 s(t) ), (1) may provide valuable inormation about the phase a Invited talk given at the XXVIII International Conerence on igh Energy Physics ICEP 96, Warsaw, Poland, July 25 31, 1996, to appear in the proceedings. structure o the observable ξ (s) ( ) =exp iθ (s) A(B 0 s ) M 12 A(Bs 0 ), (2) where Θ (s) M 12 is the weak Bs B 0 s 0 mixing phase 1. This can be seen nicely by writing Eq. (1) in a more explicit way as ollows: [( Γ[(t)] 1+ ξ (s) 2) ( e Γ(s) t +e Γ(s) t) 2Reξ (s) (e Γ(s) t e Γ(s) t)]. (3) In this expression the rapid oscillatory M s t terms,whichshowupinthetagged rates, cancel 3. Thereore it depends only on the two exponents e Γ(s) t and e Γ(s) t,whereγ (s) and Γ(s) can be determined e.g. rom the angular distribution 5 o the decay B s J/ψφ. From an experimental point o view such untagged analyses are clearly much more promising than tagged ones in respect o eiciency, acceptance and purity. 2 A Transparent Example In order to illustrate these untagged rates in more detail, let me discuss an estimate o the angle γ o the usual non-squashed unitarity triangle 6 o the Cabibbo Kobayashi Maskawa matrix 7 (CKM matrix) using untagged B s K + K and B s K 0 K 0 decays. This approach has been proposed very recently by Dunietz and mysel 8.Using the SU(2) isospin symmetry o strong interactions to relate the QCD penguin contributions to these decays (electroweak penguins are color-suppressed
2 in these modes and thus play a minor role), we obtain Γ[K + K (t)] P 2[ ( 1 2 r cos ρ cos γ + r 2 cos 2 γ ) e Γ(s) t + r 2 sin 2 γe Γ(s) t] (4) and Γ[K 0 K 0 (t)] P 2 e Γ(s) t, (5) where r r e iρ = T P ei(δ T δ P ). (6) ere P denotes 9 the b s QCD penguin amplitude, T is the color-allowed b ūu s tree amplitude, and δ P and δ T are the corresponding CP-conserving strong phases. In order to determine γ rom the untagged rates Eqs. (4) and (5) we need an additional input that is provided by the SU(3) lavor symmetry o strong interactions. I we neglect the color-suppressed current-current contributions to B + π + π 0 we ind 9 T λ K 2 A(B + π + π 0 ), (7) π where λ is the Wolenstein parameter 10, K and π are the K and π meson decay constants, respectively, and A(B + π + π 0 ) denotes the appropriately normalized B + π + π 0 decay amplitude. Since P is known rom B s K 0 K 0,thequantity r = T / P can be estimated with the help o Eq. (7) and allows the extraction o γ rom the part o Eq. (4) evolving with the exponent e Γ(s) t. 3 B s Decays into Admixtures o CP Eigenstates As we will see in a moment, one can even do better than in the previous section, i.e. without using an SU(3) lavor symmetry input, by considering the decays corresponding to B s KK where two vector mesons (or higher resonances) are present in the inal states An Extraction o γ using Untagged B s K + K and B s K 0 K 0 Decays The untagged angular distributions o these decays, which take the general orm 11 [(θ, φ, ψ; t)] = [ ] b (k) (t)+b (k) (t) g (k) (θ, φ, ψ), k (8) provide many more observables than the untagged modes B s K + K and B s K 0 K 0 discussed in Section 2. ere θ, φ and ψ are generic decay angles describing the kinematics o the decay products arising in the decay chain B[ s K ( πk) ] K ( πk). The observables b (k) (t)+b (k) (t) governing the time-evolution o the angular distribution Eq. (8) are given by real or imaginary parts o bilinear combinations o decay amplitudes that are o the ollowing structure: [ ] (K A (t) A (t) K ) e B s (t) (9) (K K ) e B s (t) + ( ) B s B s. In this expression and are labels that deine the relative polarizations o K and K in inal state conigurations ( K K ) (e.g. linear polarization states 12 {0,, }) with CP eigenvalues ηcp: (CP) ( K K ) = η CP ( K K ). (10) An analogous relation holds or. The observables o the angular distributions or B s K + K and B s K 0 K 0 are given explicitly in Re. 8.In the case o the latter decay the ormulae simpliy considerably since it is a penguin-induced b sd d mode and receives thereore no tree contributions. Using as in Section 2 the SU(2) isospin symmetry o strong interactions, the QCD penguin contributions o these decays can be related to each other. I one takes into account these relations and goes very careully through the observables o the angular distributions, one inds that they allow the extraction o the CKM angle γ without any additional theoretical input 8. In particluar no SU(3) symmetry arguments as in Section 2 are needed. The angular distributions provide moreover inormation about the hadronization dynamics o the corresponding decays, and the ormalism 8 developed or B s K + K applies also to B s ρ 0 φ i we perorm a suitable replacement o variables. Since that channel is expected to be dominated by electroweak penguins 13, it may allow interesing insights into the physics o these operators. 3.2 The Gold-plated Transitions to Extract η This subsection is devoted to an analysis 8 o the untagged decays B s Ds + Ds and B s J/ψφ, 2
3 which is the counterpart o the gold-plated mode B d J/ψK S to measure the angle β o the unitarity triangle. These decays are dominated by a single CKM amplitude. Consequently the hadronic uncertainties cancel in the quantity ξ (s) deined by Eq. (2), which takes in that particular case the orm ξ (s) =exp(iφ CKM ), (11) and the observables o the angular distributions simpliy considerably. A characteristic eature o these angular distributions is intererence between CP-even and CP-odd inal state conigurations leading to observables that are proportional to (e Γ(s) t e Γ(s) t) sin φ CKM. (12) ere the CP-violating weak phase is given by 2 φ CKM =2λ 2 η O(0.03), where the Wolenstein parameter η ixes the height o the unitarity triangle 6. The observables o the angular distributions 8 or both the color-allowed channel B s Ds + Ds and the color-suppressed transition B s J/ψφ each provide suicient inormation to determine the CP-violating weak phase φ CKM rom their untagged data samples thereby ixing the Wolenstein parameter η. The extraction o φ CKM is not as clean as that o β rom B d J/ψK S. This is due to the smallness o φ CKM with respect to β enhancing the importance o the unmixed amplitudes proportional to the CKM actor Vub V us which are similarly suppressed in both cases. 4 B s Decays caused by b cu s The B s decays discussed in this section are pure tree decays and probe the CKM angle γ in a clean way 14. There are by now well-known strategies onthemarketusingthetimeevolutionsosuch modes, e.g. B s D 0 φ 14,15 and B s D s ± K 16, to extract γ. owever, in these strategies tagging is essential and the rapid M s t oscillations have to be resolved which is an experimental challenge. The question what can be learned rom untagged data samples o these decays, where the M s t terms cancel, has been investigated by Dunietz in Re. 3. In the untagged case the determination o γ requires additional inputs: a measurement o the untagged B s DCPφ 0 rate in the case o the color-suppressed modes B s D 0 φ, and a theoretical input corresponding to the ratio o the unmixed rates Γ(Bs 0 Ds K + )/Γ(Bs 0 Ds π + )in the case o the color-allowed decays B s D s ± K. This ratio can be estimated with the help o the actorization hypothesis which may work reasonably well or these color-allowed channels. Interestingly the untagged data samples may exhibit CP-violating eects that are described by observables o the orm Γ[(t)] Γ[(t)] (e Γ(s) t e Γ(s) t) sin ϱ sin γ. (13) ere ϱ is a CP-conserving strong phase shit and γ is the usual angle o the unitarity triangle. Because o the sin ϱ actor, a non-trivial strong phase shit is essential in that case. Consequently the CP-violating observables Eq. (13) vanish within the actorization approximation predicting ϱ {0,π}. Since actorization may be a reasonable working assumption or the color-allowed modes B s D s ± K, the CP-violating eects in their untagged data samples are expected to be very small. On the other hand, the actorization hypothesis is very questionable or the color-suppressed decays B s D 0 φ and sizable CP violation may show up in the corresponding untagged rates 3. Concerning such CP-violating eects and the extraction o γ rom untagged rates, the decays B s Ds ± K and B s D 0 φ are expected to be more promising than the transitions discussed above. As was shown in Re. 17,thetimedependences o their untagged angular distributions allow a clean extraction o the CKM angle γ without any additional input. The inal state conigurations o these decays are not admixtures o CP eigenstates as in Section 3. They can, however, be classiied by their parity eigenvalues. A characteristic eature o the angular distributions are intererences between parity-even and parity-odd conigurations that may lead to potentially large CP-violating eects in the untagged data samples even when all strong phase shits vanish. An example o such an untagged CP-violatingobservable is the ollowing quantity 17 : Im {[ A (t) A (t) ]} +Im {[ A C (t) A C (t) ]} (e Γ(s) t e Γ(s) t) { R cos(δ ϑ ) 3
4 + R cos(δ ϑ ) } sin γ. (14) In that expression bilinear combinations o certain decay amplitudes (see Eq. (9)) show up, {0, } denotes a linear polarization state 12 and δ, ϑ are CP-conserving phase shits that are induced through strong inal state interaction eects. For the details concerning the observable Eq. (14) in particular the deinition o the relevant charge-conjugate amplitudes A C and the quantities R the reader is reerred to Re. 17. ere I would like to emphasize only that the strong phase shits enter in the orm o cosine terms. Thereore non-trivial strong phases are in contrast to Eq. (13) not essential or CP violation in the corresponding untagged data samples and one expects, even within the actorization approximation, which may apply to the color-allowed modes B s Ds ± K, potentially large eects. Since the sot photons in the decays Ds D s γ, D 0 D 0 γ are diicult to detect, higher resonances exhibiting signiicant all-charged inal states, e.g. D s1 (2536) + D + K 0, D 1 (2420) 0 D + π with D + D 0 π +,maybemorepromising or certain detector conigurations. A similar comment applies also to the mode B s Ds + D s discussed in Subsection Conclusions The oscillatory M s t terms arising rom Bs 0 Bs 0 mixing, which may be too rapid to be resolved with present vertex technology, cancel in untagged rates o B s decays that depend thereore only on the two exponents e Γ(s) t and e Γ(s) t. I the width dierence Γ s is sizable as is expected rom theoretical analyses untagged B s decays may allow the determination both o the CKM angle γ and o the Wolenstein parameter η and may urthermore provide valuable insights into the mechanism o CP violation and the hadronization dynamics o the corresponding decays. To this end certain angular distributions may play a key role. Compared to the tagged case, such untagged measurements are much more promising in view o eiciency, acceptance and purity. A lot o statistics is required, however, and the natural place or these experiments seems to be a hadron collider. Obviously the easibility o untagged strategies to extract CKM phases depends crucially on a sizable width dierence Γ s. Even i it should turn out to be too small or such untagged analyses, once Γ s 0 has been established experimentally, the ormulae developed in Res. 8,17 have also to be used to determine CKM phases correctly rom tagged measurements. In this sense we cannot lose and an exciting uture concerning B s decays may lie ahead o us! Acknowledgment I would like to thank Isi Dunietz or the most pleasant and enjoyable collaboration on the topics presented in this talk. Reerences 1. I. Dunietz and J.. Rosner, Phys. Rev. D34 (1986) 1404; I. Dunietz, Ph. D. thesis, Ann. Phys. 184 (1988) 350; M. Gronau, Phys. Rev. ett. 63 (1989) A. Ali and D. ondon, DESY , hepph/ ; A.J. Buras, Nucl. Instr. and Meth. in Phys. Res. A368 (1995) I. Dunietz, Phys. Rev. D52 (1995) For a very recent analysis o Γ s and other reerences see M. Beneke, G. Buchalla and I. Dunietz, hep-ph/ ; M. Beneke, these proceedings, hep-ph/ A.S. Dighe, I. Dunietz,.J. ipkin and J.. Rosner, Phys. ett. B369 (1996) Chau and W.-Y. Keung, Phys. Rev. ett. 53 (1984) 1802; C. Jarlskog and R. Stora, Phys. ett. B208 (1988) N. Cabibbo, Phys. Rev. ett. 10 (1963) 531; M. Kobayashi and T. Maskawa, Progr. Theor. Phys. 49 (1973) R. Fleischer and I. Dunietz, TTP96-07, hepph/ M. Gronau et al., Phys. Rev. D52 (1995) Wolenstein, Phys. Rev. ett. 51 (1983) This notation is due to Amol Dighe, private communication. 12. J.. Rosner, Phys. Rev. D42 (1990) R. Fleischer, Phys. ett. B332 (1994) 419; N.G. Deshpande, X.-G. e and J. Trampetic, Phys. ett. B345 (1995) 547; M. Gronau et al., Phys. Rev. D52 (1995) R. Aleksan et al., hep-ph/
5 15. M. Gronau and D. ondon, Phys. ett. B253 (1991) R. Aleksan, I. Dunietz and B. Kayser, Z. Phys. C54 (1992) R. Fleischer and I. Dunietz, TTP96-08, hepph/
PoS(CKM2016)100. Measurement of γ from time-dependent analysis of. Agnieszka Dziurda. CERN
Measurement o γ rom time-dependent analysis o B s D s K ± CERN E-mail: agnieszka.dziurda@cern.ch We report the measurement o the time-dependent CP violating observables in B s D s K ± decays. The study
More informationOverview of LHCb Experiment
Overview of Physics @ LHCb Experiment Yuanning Gao, Tsinghua University Representing the LHCb Collaboration Detector performance CKM triangles Other topics (selected) Conclusions A very selective review!
More informationarxiv:hep-ph/ v4 18 Nov 1999
February 8, 018 arxiv:hep-ph/990998v4 18 Nov 1999 OITS-678 CLEO measurement of B π + π and determination of weak phase α 1 K. Agashe and N.G. Deshpande 3 Institute of Theoretical Science University of
More informationTheory of CP Violation
Theory of CP Violation IPPP, Durham CP as Natural Symmetry of Gauge Theories P and C alone are not natural symmetries: consider chiral gauge theory: L = 1 4 F µνf µν + ψ L i σdψ L (+ψ R iσ ψ R) p.1 CP
More informationMeasurement of the angle g (f 3 ) at the e + e - B-factories
Measurement o the angle g 3 at the e + e - -actories Matteo Rama Laboratori Nazionali di Frascati Flavor Physics & CP Violation 13 May -4 13, uzios Rio de Janeiro razil The angle g CM is 3x3 unitary matrix
More informationFleischer Mannel analysis for direct CP asymmetry. Abstract
Fleischer Mannel analysis for direct CP asymmetry SLAC-PUB-8814 hep-ph/yymmnnn Heath B. O Connell Stanford Linear Accelerator Center, Stanford University, Stanford CA 94309, USA hoc@slac.stanford.edu (8
More informationarxiv:hep-ph/ v1 17 Oct 2003
LMU 25/03 October 2003 Model Independent Bound on the Unitarity Triangle from CP Violation in B π + π and B ψk S arxiv:hep-ph/0310218v1 17 Oct 2003 Gerhard Buchalla and A. Salim Safir Ludwig-Maximilians-Universität
More informationMeasurements of the phase φ s at LHCb
Measurements of the phase φ s at LHCb V. Batozskaya 1 on behalf of LHCb collaboration 1 National Centre for Nuclear Research, Warsaw, Poland XXIII Cracow Epiphany Conference 9-12 January 2017 V. Batozskaya
More informationCP VIOLATION. Thomas Mannel. Theoretical Physics I, Siegen University. Les nabis School 2011
CP VIOLATION Thomas Mannel Theoretical Physics I, Siegen University Les nabis School 2011 Outline of the course Lecture 1: Basics of CP and the Standard Model Lecture 2: CP Violation in the Standard Model
More informationPoS(CKM2016)113. Measurement of γ from B meson decay to D ( ) K ( )
LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France. E-mail: frederic.machefert@in2p3.fr The LHCb experiment has measured the angle γ of the unitarity triangle using B D ( ) K ( ) decays and with an integrated
More informationRecent CP violation measurements. Advanced topics in Particle Physics: LHC physics, 2011 Jeroen van Tilburg 1/38
Recent CP violation measurements Advanced topics in Particle Physics: LHC physics, 2011 Jeroen van Tilburg 1/38 Recap of last week What we have learned last week: Indirect searches (CP violation and rare
More informationHow well do we know the Unitarity Triangle? An experimental review
SLAC-PUB-1281 hep-ex/78.3238 September 27 How well do we know the Unitarity Triangle? An experimental review Massachusetts Institute of Technology, Department of Physics, Room 26-443, 77 Massachusetts
More informationMax-Planck-Institute for Physics, Föhringer Ring 6, D Munich, Germany. Department of Physics and IPAP, Yonsei University, Seoul , Korea
PROCEEDINGS The Width Difference of B d Mesons Amol Dighe Max-Planck-Institute for Physics, Föhringer Ring 6, D-80805 Munich, Germany CERN, Theory Division, CH 1211 Geneva 23, Switzerland Choong Sun Kim
More informationTowards new frontiers in CP violation in B decays
Journal of Physics: Conference Series OPEN ACCESS Towards new frontiers in CP violation in B decays To cite this article: Robert Fleischer 2014 J. Phys.: Conf. Ser. 556 012035 View the article online for
More informationRecent BaBar results on CP Violation in B decays
Journal of Physics: Conference Series OPEN ACCESS Recent BaBar results on CP Violation in B decays To cite this article: Arantza Oyanguren 2013 J. Phys.: Conf. Ser. 447 012029 View the article online for
More informationStatus of the Cabibbo-Kobayashi-Maskawa Quark Mixing Matrix
Status of the Cabibbo-Kobayashi-Maskawa Quark Mixing Matrix Johannes-Gutenberg Universität, Mainz, Germany Electronic address: Burkhard.Renk@uni-mainz.de Summary. This review, prepared for the 2002 Review
More informationParity violation. no left-handed ν$ are produced
Parity violation Wu experiment: b decay of polarized nuclei of Cobalt: Co (spin 5) decays to Ni (spin 4), electron and anti-neutrino (spin ½) Parity changes the helicity (H). Ø P-conservation assumes a
More informationarxiv:hep-ph/ v2 22 Dec 2001
Exploring CP violation with B 0 s D 0 φ decays A. K. Giri 1, R. Mohanta and M. P. Khanna 1 1 Physics Department, Panjab University, Chandigarh-160 014, India School of Physics, University of Hyderabad,
More informationDetermining the Penguin Effect on CP Violation in
Determining the Penguin Effect on CP Violation in B 0 π + π arxiv:hep-ph/9309283v1 17 Sep 1993 João P. Silva and L. Wolfenstein Department of Physics, Carnegie-Mellon University, Pittsburgh, Pennsylvania
More information-2betas Measurement from a fit to untagged Bs-> J/psi phi data
-2betas Measurement from a fit to untagged Bs-> J/psi phi data Géraldine Conti Géraldine Conti 1. Outline Part 1 : Introduction What is -2β s? How to measure -2β s? What s new about -2β s? Why is LHCb
More informationRecent CP violation measurements
Recent CP violation measurements 1/38 Recap of last week What we have learned last week: Indirect searches (CP violation and rare decays) are good places to search for effects from new, unknown particles.
More informationAdrian Bevan Department of Physics Liverpool University Liverpool, United Kingdom (from the BABAR Collaboration.)
BABAR-PROC-04/138 SLAC-PUB-10874 Measurements of sin 2α/φ 2 from B ππ, ρπ and ρρ modes. Adrian Bevan Department of Physics Liverpool University Liverpool, United Kingdom (from the BABAR Collaboration.)
More informationProbing New Physics Through B s Mixing
Probing New Physics Through B s Mixing Patricia Ball IPPP, Durham Moriond EW, Mar 12 2007 Phenomenology of B s Mixing B 0 = (b s) and B 0 = (s b) with definite flavour content, but not mass eigenstates
More informationHiroyuki Sagawa KEK OHO 1-1, Tsukuba, Ibaraki, Japan
Hiroyuki Sagawa KEK OHO 1-1, Tsukuba, Ibaraki, Japan In the neutral B meson system, it is possible to measure the CKM angle α using the decay mode b uud in the presence of penguin pollution. Here the recent
More informationPoS(CKM2016)087. Measurements of m d,s and Γ d at LHCb. Stefania Vecchi INFN, Sezione di Ferrara, Ferrara, Italy
INFN, Sezione di Ferrara, Ferrara, Italy E-mail: vecchi@fe.infn.it In this proceedings the latest measurements of the mixing properties of the neutral B mesons performed by the collaboration are presented.
More informationMoriond QCD La Thuile, March 14 21, Flavour physics in the LHC era. An introduction. Clara Matteuzzi. INFN and Universita Milano-Bicocca
Moriond QCD La Thuile, March 14 21, 2009 Flavour physics in the LHC era An introduction Clara Matteuzzi INFN and Universita Milano-Bicocca 1 Contents 1. The flavor structure of the Standard Model 2. Tests
More informationStandard Model of Particle Physics
Standard Model of Particle Physics Chris Sachrajda School of Physics and Astronomy University of Southampton Southampton SO17 1BJ UK SUSSP61, St Andrews August 8th 23rd 2006 Contents 1. Spontaneous Symmetry
More informationB the Tevatron
B Physics @ the Tevatron Stephanie Hansmann-Menzemer Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg DESY, 9 th of November 7 xxx p.1/1 Tevatron p p collisions at s = 1.96 TeV observed by
More informationNew Probes of New Physics with Leptonic Rare B Decays
Nikhef-2018-019 New Probes of New Physics with Leptonic Rare B Decays Robert Fleischer a,b a Nikhef, Science Park 105, 1098 XG Amsterdam, Netherlands b Department of Physics and Astronomy, Faculty of Science,
More informationarxiv:hep-ph/ v1 19 May 1999
1 UdeM-GPP-TH-99-61 IMSc-99/05/18 Can One Measure the Weak Phase of a Penguin Diagram? arxiv:hep-ph/9905404v1 19 May 1999 David London a,1, Nita Sinha b, and Rahul Sinha b,3 a: Laboratoire René J.-A. Lévesque,
More informationDetermination of the phase φ s at LHCb
Determination of the phase φ s at LHCb Varvara Batozskaya 1,, on behalf of the LHCb Collaboration 1 National Centre for Nuclear Research (NCBJ), Warsaw, Poland Abstract. The determination of the mixing-induced
More informationTheory and Phenomenology of CP Violation
Theory and Phenomenology of CP Violation Thomas Mannel a a Theretische Physik I, University of Siegen, 57068 Siegen, Germany In this talk I summarize a few peculiar features of CP violation in the Standard
More informationCracking the Unitarity Triangle
Cracking the Unitarity Triangle Latest Results from BABAR Masahiro Morii Harvard University NEPPSR 2004, Craigville, MA Unitarity Triangle Already seen it a few times this week VV + VV + VV = 0 ud ub cd
More informationarxiv: v1 [hep-ph] 5 Dec 2014
Direct CP violation in Λ b decays Y.K. Hsiao 1,2 and C.Q. Geng 1,2,3 1 Physics Division, National Center for Theoretical Sciences, Hsinchu, Taiwan 300 2 Department of Physics, National Tsing Hua University,
More informationB Factories. Alan Watson University of Birmingham, UK
Towards (φ ) and γ (φ ) at the 2 3 B Factories Alan Watson University of Birmingham, UK The Unitarity Triangle Source of CP in the Standard Model 1 λ 2 /2 λ Aλ 3 (ρ iη) V CKM λ 1 λ 2 /2 Aλ 2 Αλ 3 (1 ρ
More informationCP Violation: A New Era
CP Violation: A New Era Ringberg Phenomenology Workshop on Heavy Flavors 2/5/23 Yossi Nir (Weizmann Institute of Science) Collaborations with: Yuval Grossman, Zoltan Ligeti, Helen Quinn Sandrine Laplace,
More informationFuture of CP violation in. a sl. Matthew Kirk. Toward the Ultimate Precision in Flavour Physics Warwick 17 April 2018
Future of CP violation in Matthew Kirk Toward the Ultimate Precision in Flavour Physics Warwick 17 April 2018 1 Im ( Γ 12 ) M 12 Ratio is nice for calculation major uncertainty in both ( f B ) cancels
More informationANOTHER METHOD FOR A GLOBAL FIT OF THE CABIBBO-KOBAYASHI-MASKAWA MATRIX
ANOTHER METHOD FOR A GLOBAL FIT OF THE CABIBBO-KOBAYASHI-MASKAWA MATRIX PETRE DIÞÃ Institute of Physics and Nuclear Engineering, P.O. Box MG6, Bucharest, Romania Received February 1, 005 Recently we proposed
More informationMeasurement of CP Violation in B s J/ΨΦ Decay at CDF
Measurement of CP Violation in B s J/ΨΦ Decay at CDF Gavril Giurgiu Johns Hopkins University University of Virginia Seminar April 4, 2012 Introduction - CP violation means that the laws of nature are not
More information(Heavy Quark) Flavour Physics at LHC
Tevatron and LHC WS17/18 TUM S.Bethke, F. Simon V13: Heavy Quarks at LHC 1 Lecture 13: (Heavy Quark) Flavour Physics at LHC flavour physics - intro CKM quark mixing matrix goals of flavour physics heavy
More informationarxiv: v3 [hep-ph] 14 Jan 2015
USTC-ICTS-14-0 October 014 arxiv:1411.0768v3 [hep-ph] 14 Jan 015 Asymmetries from the interference between Cabibbo-favored and doubly-cabibbo-suppressed D decays Dao-Neng Gao Interdisciplinary Center for
More informationarxiv:hep-ph/ v1 22 Mar 1999
CLNS 99/605 Bounding the penguin effects in determinations of α from B 0 (t) π + π arxiv:hep-ph/9903447v 22 Mar 999 Dan Pirjol Floyd R. Newman Laboratory of Nuclear Studies, Cornell University, Ithaca,
More informationSLAC-PUB-8221 hep-ph/yymmnnn August 1999 CP VIOLATION AND B PHYSICS 1 Michael Gronau 2 Stanford Linear Accelerator Center Stanford University, Stanfor
SLAC-PUB-8221 hep-ph/yymmnnn August 1999 CP VIOLATION AND B PHYSICS 1 Michael Gronau 2 Stanford Linear Accelerator Center Stanford University, Stanford, CA 94309 ABSTRACT This is a quick review of CP non-conservation
More informationB Physics in the Next Millennium
B Physics in the Next Millennium Marina Artuso 1 arxiv:hep-ph/9812372v1 15 Dec 1998 Syracuse University Syracuse NY 13244 Talk presented at HQ98, Workshop on HEAVY QUARKS AT FIXED TARGET, Batavia, Illinois,
More informationThe weak interaction Part II
The weak interaction Part II Marie-Hélène Schune Achille Stocchi LAL-Orsay IN2P3/CNRS Weak Interaction, An-Najah National University, Nablus, Palestine 1 The K -K system The CKM mechanism Measurements
More informationPhysics 742, Standard Model: Homework #8 Solution
Physics 74, Standard Model: Homework #8 Solution Quark masses The isospin-violating ratio o quark masses is given as, Using Eq. (8.63) in the textbook, m u r m d. () m d + m u m =(m ± u + m d ) c, () m
More informationarxiv:hep-ph/ v1 17 Feb 1995
LMU-13/94 (Revised version) Remarks on the Quark-diagram Description of Two-body Nonleptonic B-meson Decays arxiv:hep-ph/9502339v1 17 Feb 1995 Zhi-zhong XING 1 Sektion Physik, Theoretische Physik, Universität
More informationnew measurements of sin(2) & cos(2) at BaBar
new measurements of sin(2) & cos(2) at BaBar, UC Irvine For the BaBar collaboration ICHEP24 August 16th, Beijing bruinsma@slac.stanford.edu Decay rates of B mesons 2 Time-dependent rates for B (f + ) or
More informationThe Cabibbo-Kobayashi-Maskawa (CKM) matrix
The Cabibbo-Kobayashi-Maskawa (CKM) matrix Charge-raising current J µ W = ( ν e ν µ ν τ )γ µ (1 γ 5 ) V = A u L Ad L e µ τ + (ū c t)γ µ (1 γ 5 )V Mismatch between weak and quark masses, and between A u,d
More informationCMS Conference Report
Available on CMS information server CMS CR 2001/004 CMS Conference Report April 13, 2001 Prospects of B-Physics with CMS a) Sunanda Banerjee 1) Abstract Prospects of studies of properties of b flavoured
More informationarxiv:hep-ph/ v1 12 Mar 1998
UCL-IPT-98-04 Hadronic Phases and Isospin Amplitudes in D(B) ππ and D(B) K K Decays arxiv:hep-ph/9803328v1 12 Mar 1998 J.-M. Gérard, J. Pestieau and J. Weyers Institut de Physique Théorique Université
More informationElectroweak Theory: 5
Electroweak Theory: 5 Introduction QED The Fermi theory The standard model Precision tests CP violation; K and B systems Higgs physics Prospectus STIAS (January, 2011) Paul Langacker (IAS) 162 References
More informationCP Violation in B Decays at Belle
Journal of Physics: Conference Series CP Violation in B Decays at Belle To cite this article: Masaya Iwabuchi J. Phys.: Conf. Ser. 335 37 View the article online for updates and enhancements. Related content
More informationP -wave Dilution, Penguin and Rescattering Effects
hep-ph/9904360 LMU-99-07 PAR-LPTHE-99-17 April 1999 CP Asymmetries in B d D + D and B s Ds + D s Decays: P -wave Dilution, Penguin and Rescattering Effects Xuan-Yem Pham 1 Laboratoire de Physique Théorique
More informationMeasurements of CP violating phases in B decays at LHCb
Measurements of CP violating phases in B decays at Sevda Esen [Heidelberg University] on behalf of the collaboration Les Rencontres de Physique de la Vallée d Aoste, 1-7 March 215 CP Violation in the SM
More informationCP Violation Beyond the Standard Model
CP Violation Beyond the Standard Model 5th Recontres du Vietnam Hanoi August 7, 2004 Yossi Nir (Weizmann Institute of Science) Thanks to: Sandrine Laplace, Zoltan Ligeti CPV BSM 1/21 Motivation Why do
More informationarxiv:hep-ph/ v1 30 Dec 1994
OITS-566 CP asymmetry Relations Between B 0 ππ And B 0 πk Rates N.G. Deshpande, and Xiao-Gang He arxiv:hep-ph/941393v1 30 Dec 1994 Institute of Theoretical Science University of Oregon Eugene, OR 97403-503,
More informationBPhysics in the Next Millennium
BPhysics in the Next Millennium Marina Artuso 1 Syracuse University Syracuse NY 13244 Talk presented at HQ98, Workshop on HEAVY QUARKS AT FIXED TARGET, Batavia, Illinois, October 1998 Abstract. As we approach
More informationHeavy Flavour Physics at the LHC. Lessons from the first phase of the LHC DESY 27 September 2012
Heavy Flavour Physics at the LHC University of Warwick and CERN Lessons from the first phase of the LHC DESY 27 September 2012 1 Outline Heavy flavour production at the LHC The LHCb experiment Selected
More informationarxiv:hep-ph/ v1 22 Dec 1996
TTP96-58 hep-ph/9612446 December 1996 arxiv:hep-ph/9612446v1 22 Dec 1996 CP Violation and the Role o Electroweak Penguins in Non-leptonic B Decays Robert Fleischer Institut ür Theoretische Teilchenphysik
More informationD0 and D+ Hadronic Decays at CLEO
and + Hadronic ecays at CLEO K π π + + + Cornell University K π π + CLEO collaboration and branching fractions oubly Cabibbo suppressed branching fractions: K and K S vs. K L alitz analyses: K K and +
More informationPrecision measurement of
Precision of Francesca Dordei University of Heidelberg, Physikalisches Institut b 3rd IMPRS-PTFS Seminar, Heidelberg - 24 th April 2012 (Heidelberg University) 24-04-2012 1 / 24 and the LHCb detector CP
More informationDetermination of the CP-violating phase φ s in
Determination of the CP-violating phase φ s in B 0 s J/ψφ decays Varvara Batozskaya on behalf of the LHCb Collaboration National Centre for Nuclear Research (NCBJ), Warsaw, Poland The determination of
More informationCP Violation in B Decays and the CKM Matrix. Emmanuel Olaiya Rutherford Appleton Laboratory Chilton,Didcot,Oxon,OX11 0QX,UK
XXIV Physics in Collision - Boston, June 27-29, 24 CP Violation in B Decays and the CKM Matrix Emmanuel Olaiya Rutherford Appleton Laboratory Chilton,Didcot,Oxon,OX11 QX,UK ABSTRACT Results by the BaBar
More informationMihir P. Worah. Stanford Linear Accelerator Center. Stanford University, Stanford, CA Abstract
SLAC-PUB-727 hep-ph/9603253 March 996 A NEW SUPERSYMMETRIC CP VIOLATING CONTRIBUTION TO NEUTRAL MESON MIXING Mihir P. Worah Stanford Linear Accelerator Center Stanford University, Stanford, CA 94309 Abstract
More informationHadronic B decays from SCET. Christian Bauer LBNL FPCP 2006, Vancouver
Hadronic B decays from SCET Christian Bauer LBNL FPCP 2006, Vancouver Outline of the Talk Introduction Hadronic B deays in SCET Phenomenology of Hadronic B decays Conclusions Introduction Flavor Physics
More informationElementary Particle Physics
Yorikiyo Nagashima Elementary Particle Physics Volume 2: Foundations of the Standard Model WILEY- VCH WILEY-VCH Verlag GmbH & Co. KGaA Contents Preface XI Acknowledgments XV Color Plates XVII Part One
More informationLHCb Physics and prospects. Stefano Perazzini On behalf of LHCb Collabora4on MENU nd June 2010
LHCb Physics and 2010-11 prospects Stefano Perazzini On behalf of LHCb Collabora4on MENU2010 2 nd June 2010 Physics: OUTLINE Flavor physics and CPV in the quark sector Search for New Physics The LHCb Experiment
More informationarxiv: v1 [hep-lat] 4 Oct 2016
arxiv:60.0093v [hep-lat] 4 Oct 06 Leptonic decay-constant ratio / rom clover-improved N = + QCD Universität Regensburg, Institut ür Theoretische Physik, D-93040 Regensburg, Germany E-mail: enno.scholz@physik.uni-regensburg.de
More informationProspects of ATLAS and CMS for B physics and CP violation
Prospects of ATLAS and CMS for B physics and CP violation F. Ohlsson-Malek To cite this version: F. Ohlsson-Malek. Prospects of ATLAS and CMS for B physics and CP violation. Flavor Physics and CP Violation
More informationBs studies at a SuperB: physics case and experimental potentialities
Bs studies at a SuperB: physics case and experimental potentialities 1 2 3 4 5 6 E.Baracchini1,2, M.Bona3, F.Ferroni1,2, G.Isidori2,4, G.Martinelli1,2, M.Pierini5, G.Piredda1,2, F.Renga1,2, A.Stocchi6
More informationLecture III. Measurement of sin 2 in B K 0 S. Measurement of sin 2 in B + -, B + - Measurement of in B DK. Direct CP Violation
Lecture III Measurement of sin 2 in BK S Measurement of sin 2 in BK S Measurement of sin 2 in B + -, B + - Measurement of in BDK Direct CP Violation Model-independent Test for New Physics Prospects Strategy
More informationRecent results from rare decays
Recent results from rare decays Jeroen van Tilburg (Physikalisches Institut Heidelberg) Don t worry about the number of slides: Only half of them is new Advanced topics in Particle Physics: LHC physics,
More informationStandard Model of Particle Physics SS 2013
Lecture: Standard Model of Particle Physics Heidelberg SS 213 Flavour Physics I + II 1 Contents PART I Determination of the CKM Matrix CP Violation in Kaon system CP violation in the B-system PART II Search
More informationGeneral Analysis of New Physics in B J/ψK
DESY 01 006 CERN TH/001 01 TTP01 06 hep ph/010176 January 001 General Analysis of New Physics in B J/ψK Robert Fleischer Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D 607 Hamburg, Germany Thomas
More informationSpontaneous CP violation and Higgs spectra
PROCEEDINGS Spontaneous CP violation and Higgs spectra CERN-TH, CH-111 Geneva 3 E-mail: ulrich.nierste@cern.ch Abstract: A general theorem relating Higgs spectra to spontaneous CP phases is presented.
More informationKSETA-Course: Accelelerator-Based Particle Physics
KSETA-Course: Accelelerator-Based Particle Physics Flavor- and Top physics Matthias Mozer, Roger Wolf Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie KIT Universität des Landes
More informationBABAR Status & Physics Reach in Coming Years
BABAR Status & Physics Reach in Coming Years Gautier Hamel de Monchenault CEA-Saclay DAPNIA/SPP on behalf of the BABAR Collaboration CERN, 14 February 2006 Status of PEP-2 and BABAR PEP-2 and BABAR at
More informationarxiv:hep-ph/ v1 26 Feb 1998
CERN-TH/98-60 hep-ph/9802433 arxiv:hep-ph/9802433v1 26 Feb 1998 Rescattering and Electroweak Penguin Effects in Strategies to Constrain and Determine the CKM Angle γ from B πk Decays Robert Fleischer Theory
More informationThe Deutsch-Jozsa Problem: De-quantization and entanglement
The Deutsch-Jozsa Problem: De-quantization and entanglement Alastair A. Abbott Department o Computer Science University o Auckland, New Zealand May 31, 009 Abstract The Deustch-Jozsa problem is one o the
More informationMeasuring the Unitarity Triangle Angle α with BaBar. Adrian Bevan KEK, 15 th September 2006
(C) Peter Ginter (2002). Measuring the Unitarity Triangle Angle α with BaBar Adrian Bevan KEK, 15 th September 2006 (α, β, γ) (φ 1, φ 2, φ 3 ) 15 th September 2006 Adrian Bevan 1 Overview Motivation PEP-II
More informationCP Violation: Recent Results from BABAR
CP Violation: Recent Results from BABAR Gautier Hamel de Monchenault To cite this version: Gautier Hamel de Monchenault. CP Violation: Recent Results from BABAR. LAC-PUB-9816. 8 pages - talk given on behalf
More informationarxiv: v4 [hep-ph] 19 Apr 2017
Rates and CP asymmetries of Charmless Two-body Baryonic B uds Decays Chun-Khiang Chua Department of Physics and Center for High Energy Physics Chung Yuan Christian University Chung-Li Taiwan 30 Republic
More informationarxiv: v1 [hep-ex] 31 Dec 2014
The Journal s name will be set by the publisher DOI: will be set by the publisher c Owned by the authors, published by EDP Sciences, 5 arxiv:5.v [hep-ex] Dec 4 Highlights from Compass in hadron spectroscopy
More informationDecadimenti senza charm e misure di α alle B-Factory
Decadimenti senza charm e misure di α alle B-Factory Marcella Bona INFN e Università di Torino Incontri sulla Fisica delle Alte Energie Quark pesanti Lecce, 24 Aprile 2003 IFAE Lecce, Quark Pesanti, 24
More informationLong distance weak annihilation contribution to
Long distance weak annihilation contribution to B ± (π/k) ± l + l Sergio Tostado In collaboration with: A. Guevara, G. López-Castro and P. Roig. Published in Phys. Rev. D 92, 054035 (2015). Physics Department,
More informationRecent developments on CKM angles
Recent developments on CKM angles Wei Wang Helmholtz-Institut für Strahlen- und Kernphysik, Bonn Flavor Physics & CP Violation, Buzios, Rio, 19-24 May 2013 (FPCP 2013) Wei Wang (HISKP) CKM angles Buzios,
More informationMeasuring α with B ρρ and ρπ
Measuring with B ρρ and ρπ Andrei Gritsan LBNL May 14, 2005 U. of WA, Seattle Workshop on Flavor Physics and QCD Outline Minimal introduction = arg[v td Vtb/V ud Vub] with b u and mixing penguin pollution
More informationRecent results on CKM/CPV from Belle
Recent results on CKM/CPV from Belle Alexander Leopold for the Belle Collaboration Insitute of High Energy Physics Austrian Academy of Sciences HEPMAD 15, September 21 st 2015 A. Leopold (HEPHY) Belle
More informationarxiv:hep-ph/ v1 25 Feb 2002
UdeM-GPP-TH-02-94 UTPT-02-01, TAUP 2696-02, WIS/07/02-JAN-DPP February 2002 Charmless B Decays to Final States with Radially arxiv:hep-ph/0202235v1 25 Feb 2002 Excited Vector Mesons Alakabha Datta 1 a,
More informationElementary Particles, Flavour Physics and all that...
Elementary Particles, Flavour Physics and all that... 1 Flavour Physics The term Flavour physics was coined in 1971 by Murray Gell-Mann and his student at the time, Harald Fritzsch, at a Baskin-Robbins
More informationCP Violation in the B(s) meson system at LHCb Julian Wishahi on behalf of the LHCb collaboration
CP Violation in the B(s) meson system at Julian Wishahi on behalf of the collaboration 5th Rencontres de Moriond, Electroweak Session, 2th of March 215 CPV in Interference of Mixing/Decay interference
More informationMeasurement of asymmetries. in e e production
Measurement o asymmetries + + in e e production Daniele Trocino INFN and University o Torino 16th February 009 Particle Physics Ph.D. course (Pro. R. Demina) Outline Introduction quick review o QED/EW
More informationB decays to charm states at BABAR.
SLAC-PUB-1455 BABAR-PROC-4/2 hep-ex/4581 May, 24 B decays to charm states at BABAR. G. Calderini Dipartimento di Fisica dell Università degli Studi di Pisa e Istituto Nazionale di Fisica Nucleare, Sez.
More informationReconstruction of. events in LHCb. Benjamin Carron
Reconstruction of B s J/ψ η, η c φ, J/ψ φ events in LHCb Benjamin Carron sanne Neuchâtel, March 3rd, 4 Swiss Physical Society 4 Physics Motivations Selection Procedure B s Channels analysis Selection Cuts
More informationRecent Results from Fermilab Charm Experiment E791. David A. Sanders. Representing the Fermilab Experiment E791 Collaboration
Recent Results from Fermilab Charm Experiment E791 David A. Sanders University of Mississippi Representing the Fermilab Experiment E791 Collaboration We report the results of some recent E791 charm analyses.
More informationThe B-Physics Potential of LHCb, BTeV, ATLAS and CMS
PROCEEDINGS The B-Physics Potential of LHCb, BTeV, ATLAS and CMS Nuclear and Particle Physics Laboratory, University of Oxford, Oxford OX1 3RH, UK. Email: N.Harnew1@physics.ox.ac.uk Abstract: The physics
More informationarxiv:hep-ph/ v1 1 May 2003
Effects of ight-handed Gauge Bosons in B- B Mixing and CP Violation Dennis Silverman Department of Physi and Astronomy, University of California, Irvine, CA 92697-4575 W. K. Sze and Herng Yao Department
More informationSearches for CP violation in decays from BABAR and Belle
D Searches for CP violation in decays from BABAR and Belle Maurizio Martinelli on behalf of the BABAR Collaboration Università degli Studi di Bari and INFN FPCP 1 May 7 1, Torino ITALY CP violation in
More informationarxiv:hep-ph/ v1 1 Sep 2001
hep-ph/191 DPNU-1-21 How well can we predict CP asymmetry in B ππ, Kπ decays? A. I. Sanda and Kazumasa Ukai Department of Physics, Nagoya University, Nagoya, 464-862, Japan arxiv:hep-ph/191v1 1 Sep 21
More information