Desperately Seeking SUSY
|
|
- Ella Manning
- 5 years ago
- Views:
Transcription
1 Desperately Seeking SUSY Ben Allanach a (University of Cambridge) Please ask questions while I m talking a BCA, Gripaios, ; BCA, Sridhar
2 Supersymmetric Copies H
3 Supersymmetric Copies H 2 H 2
4 Review of R-Parity The superpotential of the MSSM can be seperated into two parts: W Rp = h e ijl i H 1 Ē j +h d ijq i H 1 Dj +h u ijq i H 2 Ū j +µh 1 H 2, W RP = 1 2 λ ijkl i L j Ē k +λ ijkl i Q j Dk λ ijkūi D j Dk +κ i L i H 2. W Rp is what is usually meant by the MSSM. Q: Why ban W RP? A: Proton decay
5 Definition of R-Parity Q: How is W RP normally banned? A: By defining discrete symmetry R p R p = ( 1) 3B+L+2S. SM fields have R p = +1 and superpartners have R p = 1. There are two important consequences: Because initial states in colliders arer p EVEN, we can only pair produce SUSY particles The lightest superpartner is stable
6 Candidate Event: High E T (j)
7 Natural SUSY The particles coupling the most strongly to the higgs are the stops a. Minimising the MSSM Higgs potential, M2 Z 2 δm 2 H 2 µ 2 +m 2 H 2, 3h2 t 4π2 m2 t ln ( ΛUV m t ) t H 2 t H 2 H 2 H 2 g H 2 t H 2 a M. Papucci, J. T. Ruderman and A. Weiler, arxiv: ; C. Brust, A. Katz, S. Lawrence and R. Sundrum, arxiv:
8 Natural SUSY The particles coupling the most strongly to the higgs are the stops a. Minimising the MSSM Higgs potential, M2 Z 2 δm 2 H 2 µ 2 +m 2 H 2, 3h2 t 4π2 m2 t ln ( ΛUV m t ) No cancellation < < m t 700 GeV, m g 1000 GeV. Experimental E T searches m t > 500 GeV, m g > 900 GeV. a M. Papucci, J. T. Ruderman and A. Weiler, arxiv: ; C. Brust, A. Katz, S. Lawrence and R. Sundrum, arxiv:
9 g t: E T > 50/120 GeV, N b 2, #j 2, H T > 320 GeV
10 Direct Stop Seach
11 Jets Plus E T Search
12 Bottom Up Implications of 2012 Data Naturalness is under pressure. Ways to get around it: First two generation squarks> 1.8 TeV, m t = TeV, m g = TeV, m χ 0 1 < 0.5 TeV. Ruled out soon? Compressed spectra a : ISR monojets/ E T searches give you m g > 500 GeV only. RPV decreases/removes the E T b. Explains why natural SUSY hasn t been found yet Like-sign dileptons is a generic signature, as we ll see a Dreiner, Kramer, Tattersall arxiv: b BCA, Gripaios arxiv:
13 RPV and Dark Matter If one gives up R parity,χ 0 1 is no longer a good dark matter candidate, since it decays. One then has to have something else, eg: Gravitino - still decays, but lifetime may be much longer than the age of the universe Hidden sector matter Axion/axino The implications of each of these is that (in-)direct dark matter searches shouldn t find anything.
14 Upper Bounds onλ ijk
15 Bottom up thinking We are not assuming MSSM: don t put higgs constraints - there might be higher dimension operators coming from heavier fields. Some specific (or even generic) string model. We only put in the particles important for our analysis. Others may be decoupled, or light: it shouldn t matter.
16 Gluino/stop production at LHC7 1e gluino stop σ prod NLO /pb mass/gev
17 Gluinos With R p Violation We assume lightish g, t R. If one has lepton number violatinglle orlh 1 operators, the gluinos decay producing various leptons. These cases ought to be easy to find, and are good candidates for searches. Get same-sign leptons. With LQD operators, the stops will again decay into leptons, easy to see. Flavour constraints imply that L 3 QD operators are likely to be the largest. Get same-sign leptons in 7 9 of g g events. With UDD operators, the (right-handed) top decays direcly into jets.
18 Baryon Number Violating Example g g t t t b d j d j Can lead to natural SUSY with light stops and gluinos that hasn t been excluded yet. A difficult case a : W λ ijk U id j D k. a BCA and Ben Gripaios, arxiv: t b g g production dominates. Here, you can look for like-sign di-leptons since gluinos decay into t and t with equal branching ratios.
19 Other Light States How robust is the same-sign dilepton signature in the case that other states are also light?
20 Can we avoid SS dileptons? For m H ± > m t +m b, H + t b dominates, which again will yield same-sign dileptons. H + τ + ν τ is also OK, since we ll get like-sign di-taus. Only fly in the ointment comes from Fig. 1c: when H + c b (but only happens when tanβ m t V cb /m τ 3, which seems unlikely).
21 Same-sign E T Limits CMSSll1 a : H T > 400 GeV, E T > 120 GeV a CMS-PAS-SUS-010; ATLAS-CONF
22 A FB in the Standard Model 1.96 TeVp p collisions at the Tevatron. A FB = N(c > 0) N(c < 0),c = cosθ. N(c > 0)+N(c < 0) SM Prediction:
23 Measurements ofa FB S Leone (CDF) talk at Electroweak session of Rencontres de Moriond 2012.
24 Other Constraints σ LHC7 t t = 173.4±10.6 pb, σ SM t t = 163±10 pb A y C = N( y t > y t ) N( y t > y t ) N( y t > y t )+N( y t > y t ) = 0.015±0.04, wherey i = 1/2ln(E i p i z)/(e i +p i z) is the rapidity of particlei. A y CSM = 0.006±0.002.
25 A FB Many models of random particles have been proposed, but most don t fit all the data. However, this one does: W = λ t Rd R b R λ 313 d R (p 1 ) t R (q 1 ) br d R (p 2 ) t R (q 2 ) λ 313 Figure 1: SUSY contribution to A FB a a BCA, Sridhar arxiv:
26 New Physics Contribution d σ dc = λ βŝ 384π α s λ β 72ŝ [ (βc 1) ŝ(βc 1)+2m 2 t 2m 2 br 4m 2 t +ŝ(βc 1) 2 ŝ(βc 1)+2m 2, t 2m 2 br ] 2 + whereβ = 1 4m 2 t/ŝ, ŝ = (p 1 +p 2 ) 2, α s is the strong coupling constant andm t is the top quark mass.
27 Calculate observables with MadGraph arxiv: Allanach and Sridhar, 2012 A FB m sbottom /TeV λ Allanach and Sridhar, m sbottom /TeV A C y
28 Constraints and Predictions < A FB < < A y C < < σt t TEV /pb < < σt t TEV (bin)/fb< < A l FB < < Ah FB < < σt t LHC7 /pb < 39.2 Table 1: 95% CL constraints < A FB < < A y C < < σt t TEV /pb < < σt t TEV (bin)/fb< < A l FB < < Ah FB < < σt t LHC7 /pb < < σt t LHC8 /pb < 33 Table 2: Predicted values in good fit region
29 Summary R p violation allows natural SUSY with lightish gluinos and squarks that have not yet been ruled out by searches. Same-sign dilepton searches without huge E T cut will be interesting. It covers almost all possible cases of RPV operator. In case of U i D j D k operators, current searches m g > 550 GeV. AnomalousA FB measurements can also be explained by U i D j D k type operator - fits all data Other models tend to fail one or more checks
30 Backup
31 Technical Hierarchy Problem A problem with light, fundamental scalars. Their mass receives quantum corrections from heavy particles in the theory: F h λ λ h cλ2 d n k 16π F 2 k 2 m F Quantum correction to Higgs mass: m phys h = m tree h +O(m F /100). m F GeV/c 2 is heaviest mass scale present. Higgs is eaten by W,Z to giveo(m W,Z ) 90 GeV/c 2 m tot < 1 TeV/c 2. h
32 Symmetry Standard model gauge symmetry is internal, but supersymmetry (SUSY) is a space-time symmetry. We call extra SUSY generatorsq, Q. Q fermion boson Q boson fermion In the simplest form of SUSY, we have multiplets ( ) ( ) spin 0 spin 1/2,, spin 1/2 spin 1 where each spin component in the multiplet should have identical quantum numbers (except spin).
33 Supersymmetric Solution Exact supersymmetry adds 2 scalars f L,R for every massive fermion with m fl,r = m F and they couple to h with the same strength: f L,R + h F λ λ h = 0 h λ 2 h F Q: Where are the selectrons?
34 Supersymmetric Solution Exact supersymmetry adds 2 scalars f L,R for every massive fermion with m fl,r = m F and they couple to h with the same strength: f L,R + h F λ λ h = 0 h λ 2 h F Q: Where are the selectrons? A: SUSY must be softly broken.
35 Supersymmetric Solution Exact supersymmetry adds 2 scalars f L,R for every massive fermion with m fl,r = m F and they couple to h with the same strength: f L,R + h F λ λ h = 0 h λ 2 h F When we break SUSY, we must make sure that we don t reintroduce the naturalness problem: soft breaking.
36 Soft breaking Make scalar partners heavier than fermions: m 2 fl,r = m 2 F +δ2 Then we find a quantum correction to m h of (Drees) ( ) m 2 h λ2 4δ 2 +2δ 2 ln m2 F +O(δ 4 ). 16π 2 µ 2 So, ifδ < O(1) TeV/c 2, there s no fine tuning in m h.
37 Soft breaking Make scalar partners heavier than fermions: m 2 fl,r = m 2 F +δ2 Then we find a quantum correction to m h of (Drees) ( ) m 2 h λ2 4δ 2 +2δ 2 ln m2 F +O(δ 4 ). 16π 2 µ 2 So, ifδ < O(1) TeV/c 2, there s no fine tuning in m h. We should see supersymmetric particles in the Large Hadron Collider.
38 Broken Symmetry 3 components of the Higgs particles are eaten by W ±,Z 0, leaving us with 5 physical states: h 0,H 0 (CP+), A 0 (CP-), H ± SUSY breaking and electroweak breaking imply particles with identical quantum numbers mix: ( B, W3, H 0 1, H 0 2 ) χ0 1,2,3,4 ( t L, t R ) t 1,2 ( b L, b R ) b 1,2 ( τ L, τ R ) τ 1,2 ( W ±, H ± ) χ ± 1,2
39 Electroweak Breaking Both Higgs get vacuum expectation values: ( ) ( ) ( ) ( H 0 1 v1 H H2 0 H 1 v 2 ) and to get M W correct, match with v SM = 246 GeV: β v SM v 2 tanβ = v 2 v 1 v 1 L = h t t L H 0 2 t R +h b bl H 0 1 b R +h τ τ L H 0 1 τ R m t sinβ = h tv SM 2, m b,τ cosβ = h b,τv SM 2.
40 Hierarchy problem solved The supersymmetric copies cancel the quantum fluctuations. (This is a very difficult problem to solve). Not only that, the model contains a dark matter candidate the neutralinoχ 0 1: Weakly interacting Stable Massive To predict how much of it is around today, we must make assumptions on our cosmology, and on the particle physics. If we can measure the particle physics, we have a handle on the cosmology.
41 Sets of Cuts Signal Region m µµ /GeV σ test SSµµ /fb A/10 3 σ 95 SSµµ /fb ATLASµµ1 > ATLASµµ2 > ATLASµµ3 > ATLASµµ4 > Table 3: search regions. The ATLAS same-sign di-muon analysis
42 Sets of Cuts Signal Region p miss T /GeV m T(l 1 )/GeV A/10 3 σ 95 SSll /fb ATLASll1 > 150 > ATLASll2 > 150 > Table 4: ATLAS same sign-di lepton analysis search regions.
43 Sets of Cuts Signal Region H T /GeV p miss T /GeV N ll/fb A ǫ/10 3 N 95 ll CMSll1 >400 > <3.7 CMSll2 >400 > <8.9 CMSll3 >200 > <7.3 Table 5: Number of events past cuts for the CMS same sign-di lepton analysis N ll predicted by our test point over SM backgrounds, and acceptance A times efficiency ǫ of the signal selection, for the test point.
44 Test Point m g = 588 GeV, m t = 581 GeV LH panel: E T /GeV, RH panel: H T /GeV
45 Test Point m g = 588 GeV, m t = 581 GeV LH panel: p T (j 1 )/GeV, RH panel: p T (l 1 )/GeV
46 Test Point m g = 588 GeV, m t = 581 GeV LH panel: N J, RH panel: N isol e,µ
47 Efficiencies of CMSll E T SUSY events past cuts ǫ = SUSY events You pay for the di-leptonictt branching ratio. m gluino /TeV Allanach and Gripaios, m stop /TeV ε/%
Searches for Natural SUSY with RPV. Andrey Katz. C. Brust, AK, R. Sundrum, Z. Han, AK, M. Son, B. Tweedie, 1210.XXXX. Harvard University
Searches for C. Brust, AK, R. Sundrum, 126.2353 Z. Han, AK, M. Son, B. Tweedie, 121.XXXX Harvard University Frontiers Beyond the Standard Model III, Minneapolis, October 13, 212 (Harvard) October, 13 1
More informationLecture 18 - Beyond the Standard Model
Lecture 18 - Beyond the Standard Model Why is the Standard Model incomplete? Grand Unification Baryon and Lepton Number Violation More Higgs Bosons? Supersymmetry (SUSY) Experimental signatures for SUSY
More informationEW Naturalness in Light of the LHC Data. Maxim Perelstein, Cornell U. ACP Winter Conference, March
EW Naturalness in Light of the LHC Data Maxim Perelstein, Cornell U. ACP Winter Conference, March 3 SM Higgs: Lagrangian and Physical Parameters The SM Higgs potential has two terms two parameters: Higgs
More informationHiggs Signals and Implications for MSSM
Higgs Signals and Implications for MSSM Shaaban Khalil Center for Theoretical Physics Zewail City of Science and Technology SM Higgs at the LHC In the SM there is a single neutral Higgs boson, a weak isospin
More informationString Theory in the LHC Era
String Theory in the LHC Era J Marsano (marsano@uchicago.edu) 1 String Theory in the LHC Era 1. Electromagnetism and Special Relativity 2. The Quantum World 3. Why do we need the Higgs? 4. The Standard
More informationSUSY Phenomenology & Experimental searches
SUSY Phenomenology & Experimental searches Alex Tapper Slides available at: http://www.hep.ph.ic.ac.uk/tapper/lecture.html Reminder Supersymmetry is a theory which postulates a new symmetry between fermions
More informationAndrey Katz C. Brust, AK, S. Lawrence, and R. Sundrum; arxiv:
SUSY, the Third Generation and the LHC Andrey Katz C. Brust, AK, S. Lawrence, and R. Sundrum; arxiv:1011.6670 Harvard University January 9, 2012 Andrey Katz (Harvard) SUSY petite January 9, 2012 1 / 27
More informationSUSY and Exotica. Talk outline. Ben Allanach (University of Cambridge)
SUSY and Exotica by Ben Allanach (University of Cambridge) Talk outline SUSY Fits Impact of LHC data SUSY Tactics Exotica and A FB (t t) Please ask questions while I m talking SUSY and Exotica B.C. Allanach
More informationDiscovery Physics at the Large Hadron Collider
+ / 2 GeV N evt 4 10 3 10 2 10 CMS 2010 Preliminary s=7 TeV -1 L dt = 35 pb R > 0.15 R > 0.20 R > 0.25 R > 0.30 R > 0.35 R > 0.40 R > 0.45 R > 0.50 10 1 100 150 200 250 300 350 400 [GeV] M R Discovery
More informationSupersymmetry, Baryon Number Violation and a Hidden Higgs. David E Kaplan Johns Hopkins University
Supersymmetry, Baryon Number Violation and a Hidden Higgs David E Kaplan Johns Hopkins University Summary LEP looked for a SM Higgs and didn t find it. Both electroweak precision measurements and supersymmetric
More informationSearches for SUSY & Exotics with ATLAS
Searches for SUSY & Exotics with ATLAS Evelyn Thomson University of Pennsylvania May 17 2017 BLV 2017 Cleveland, Ohio 1 Outline Introduction Supersymmetry searches Gluinos Scalar top Electroweakinos Exotic
More informationSUSY searches at LHC and HL-LHC perspectives
SUSY searches at LHC and HL-LHC perspectives Maximilian Goblirsch-Kolb, on behalf of the ATLAS and CMS collaborations 26.10.2017, LCWS 2017, Strasbourg SUSY particle production in p-p collisions Two main
More informationLecture 4 - Beyond the Standard Model (SUSY)
Lecture 4 - Beyond the Standard Model (SUSY) Christopher S. Hill University of Bristol Warwick Flavour ++ Week April 11-15, 2008 Recall the Hierarchy Problem In order to avoid the significant finetuning
More informationSUSY Phenomenology & Experimental searches
SUSY Phenomenology & Experimental searches Slides available at: Alex Tapper http://www.hep.ph.ic.ac.uk/~tapper/lecture.html Objectives - Know what Supersymmetry (SUSY) is - Understand qualitatively the
More informationPhysics at the Tevatron. Lecture IV
Physics at the Tevatron Lecture IV Beate Heinemann University of California, Berkeley Lawrence Berkeley National Laboratory CERN, Academic Training Lectures, November 2007 1 Outline Lecture I: The Tevatron,
More informationSearches for Beyond SM Physics with ATLAS and CMS
Searches for Beyond SM Physics with ATLAS and CMS (University of Liverpool) on behalf of the ATLAS and CMS collaborations 1 Why beyond SM? In 2012 the Standard Model of Particle Physics (SM) particle content
More informationBeyond the SM: SUSY. Marina Cobal University of Udine
Beyond the SM: SUSY Marina Cobal University of Udine Why the SM is not enough The gauge hierarchy problem Characteristic energy of the SM: M W ~100 GeV Characteristic energy scale of gravity: M P ~ 10
More informationOutline: Introduction Search for new Physics Model driven Signature based General searches. Search for new Physics at CDF
PE SU Outline: Introduction Search for new Physics Model driven Signature based General searches R Search for new Physics at CDF SUperSYmmetry Standard Model is theoretically incomplete SUSY: spin-based
More informationSupersymmetry Basics. J. Hewett SSI J. Hewett
Supersymmetry Basics J. Hewett SSI 2012 J. Hewett Basic SUSY References A Supersymmetry Primer, Steve Martin hep-ph/9709356 Theory and Phenomenology of Sparticles, Manual Drees, Rohini Godbole, Probir
More informationDiscovery potential of toppartners in a realistic composite Higgs model with early LHC data
Discovery potential of toppartners in a realistic composite Higgs model with early LHC data Günther Dissertori, Elisabetta Furlan, Filip Moortgat, JHEP09(20)019 Kick-off Meeting Of The LHCPhenoNet Initial
More informationSUSY at Accelerators (other than the LHC)
SUSY at Accelerators (other than the LHC) Beate Heinemann, University of Liverpool Introduction Final LEP Results First Tevatron Run 2 Results Summary and Outlook IDM 2004, Edinburgh, September 2004 Why
More informationPhysics at the TeV Scale Discovery Prospects Using the ATLAS Detector at the LHC
Physics at the TeV Scale Discovery Prospects Using the ATLAS Detector at the LHC Peter Krieger Carleton University Physics Motivations Experimental Theoretical New particles searches Standard Model Higgs
More informationSearch for SUperSYmmetry SUSY
PART 3 Search for SUperSYmmetry SUSY SUPERSYMMETRY Symmetry between fermions (matter) and bosons (forces) for each particle p with spin s, there exists a SUSY partner p~ with spin s-1/2. q ~ g (s=1)
More informationIntroduction to Supersymmetry
Introduction to Supersymmetry I. Antoniadis Albert Einstein Center - ITP Lecture 5 Grand Unification I. Antoniadis (Supersymmetry) 1 / 22 Grand Unification Standard Model: remnant of a larger gauge symmetry
More informationCP Violation, Baryon violation, RPV in SUSY, Mesino Oscillations, and Baryogenesis
CP Violation, Baryon violation, RPV in SUSY, Mesino Oscillations, and Baryogenesis David McKeen and AEN, arxiv:1512.05359 Akshay Ghalsasi, David McKeen, AEN., arxiv:1508.05392 (Thursday: Kyle Aitken, David
More informationSearches for Physics Beyond the Standard Model at the Tevatron
FERMILAB-CONF-10-704-E-PPD Proceedings of the XXX. Physics in Collision Searches for Physics Beyond the Standard Model at the Tevatron Chris Hays 1 for the CDF and D0 Collaborations (1) Oxford University,
More informationR-hadrons and Highly Ionising Particles: Searches and Prospects
R-hadrons and Highly Ionising Particles: Searches and Prospects David Milstead Stockholm University The need for new particles Why they could be heavy and stable How can we identify them in current and
More informationLecture 03. The Standard Model of Particle Physics. Part III Extensions of the Standard Model
Lecture 03 The Standard Model of Particle Physics Part III Extensions of the Standard Model Where the SM Works Excellent description of 3 of the 4 fundamental forces Explains nuclear structure, quark confinement,
More informationDiscovery potential for SUGRA/SUSY at CMS
Discovery potential for SUGRA/SUSY at CMS Stefano Villa, Université de Lausanne, April 14, 2003 (Based on talk given at SUGRA20, Boston, March 17-21, 2003) Many thanks to: Massimiliano Chiorboli, Filip
More informationEarly SUSY Searches in Events with Leptons with the ATLAS-Detector
Early SUSY Searches in Events with Leptons with the ATLAS-Detector Timo Müller Johannes Gutenberg-Universität Mainz 2010-29-09 EMG Annual Retreat 2010 Timo Müller (Universität Mainz) Early SUSY Searches
More informationSearches for Supersymmetry at ATLAS
Searches for Supersymmetry at ATLAS Renaud Brunelière Uni. Freiburg On behalf of the ATLAS Collaboration pp b b X candidate 2 b-tagged jets pt 52 GeV and 96 GeV E T 205 GeV, M CT (bb) 20 GeV Searches for
More informationIX. Electroweak unification
IX. Electroweak unification The problem of divergence A theory of weak interactions only by means of W ± bosons leads to infinities e + e - γ W - W + e + W + ν e ν µ e - W - µ + µ Divergent integrals Figure
More informationLHC Results in Majid Hashemi IPM, Tehran Wednesday, 11 th May 2011
LHC Results in 2010-11 Majid Hashemi IPM, Tehran Wednesday, 11 th May 2011 1 LHC results after a year of successful data taking Majid Hashemi IPM, 18th May 2011 http://cms.web.cern.ch/cms/timeline/index.html
More informationComposite gluino at the LHC
Composite gluino at the LHC Thomas Grégoire University of Edinburgh work in progress with Ami Katz What will we see at the LHC? Natural theory of EWSB? Supersymmetry? Higgs as PGSB (LH, RS-like)? Extra-
More informationSUSY at Accelerators (other than the LHC)
SUSY at Accelerators (other than the LHC) Beate Heinemann, University of Liverpool Introduction Final LEP Results First Tevatron Run 2 Results Summary and Outlook IDM 2004, Edinburgh, September 2004 Why
More informationSplit SUSY and the LHC
Split SUSY and the LHC Pietro Slavich LAPTH Annecy IFAE 2006, Pavia, April 19-21 Why Split Supersymmetry SUSY with light (scalar and fermionic) superpartners provides a technical solution to the electroweak
More informationNatural SUSY and the LHC
Natural SUSY and the LHC Clifford Cheung University of California, Berkeley Lawrence Berkeley National Lab N = 4 SYM @ 35 yrs I will address two questions in this talk. What is the LHC telling us about
More informationSUSY searches with ATLAS
SUSY searches with ATLAS on behalf of the ATLAS Collaboration University of Victoria / TRIUMF, Canada June 29 2015 QFTHEP - Samara 1/23 Outline: From Mysterious to Science ATLAS and the LHC are zooming
More informationSUPERSYMETRY FOR ASTROPHYSICISTS
Dark Matter: From the Cosmos to the Laboratory SUPERSYMETRY FOR ASTROPHYSICISTS Jonathan Feng University of California, Irvine 29 Jul 1 Aug 2007 SLAC Summer Institute 30 Jul 1 Aug 07 Feng 1 Graphic: N.
More informationU(1) Gauge Extensions of the Standard Model
U(1) Gauge Extensions of the Standard Model Ernest Ma Physics and Astronomy Department University of California Riverside, CA 92521, USA U(1) Gauge Extensions of the Standard Model (int08) back to start
More informationStop NLSPs. David Shih Rutgers University. Based on: Kats & DS ( ) Kats, Meade, Reece & DS ( )
Stop NLSPs David Shih Rutgers University Based on: Kats & DS (06.0030) Kats, Meade, Reece & DS (0.6444) This year, the LHC has performed extremely well. ATLAS and CMS have collected over 5/fb of data each!!
More informationThe search for missing energy events at the LHC and implications for dark matter search (ATLAS and CMS)
The search for missing energy events at the LHC and implications for dark matter search (ATLAS and CMS) Valery P. Andreev UCLA representing the CMS collaboration th UCLA Symposium on Sources and Detection
More informationRevisiting gravitino dark matter in thermal leptogenesis
Revisiting gravitino dark matter in thermal leptogenesis Motoo Suzuki Institute for Cosmic Ray Research (ICRR) The University of Tokyo arxiv:1609.06834 JHEP1702(2017)063 In collaboration with Masahiro
More informationProbing the Connection Between Supersymmetry and Dark Matter
Probing the Connection Between Supersymmetry and Dark Matter Bhaskar Dutta Texas A&M University Physics Colloquium, OSU, March 30, 2006 March 30, 2006 Probing the Connection Between SUSY and Dark Matter
More informationSearches for Exotica with CMS
Searches for Exotica with CMS Albert De Roeck CERN, Geneva, Switzerland Antwerp University Belgium UC-Davis California USA NTU, Singapore 17 th May 2017 Introduction to Searches Searches for Outline New
More informationSUSY & Non SM Higgs Searches
SUSY & Non SM Higgs Searches Mario Martínez-Pérez (IFAE-Barcelona) Outline SUSY Squark/Gluino Searches Search for Chargino/Neutralino GMSB Scenario Non SM Higgs Searches Bs->μμ vs MSSM SUSY @ the LHC Final
More informationTheoretical Developments Beyond the Standard Model
Theoretical Developments Beyond the Standard Model by Ben Allanach (DAMTP, Cambridge University) Talk outline Bestiary of some relevant models SUSY dark matter Spins and alternatives B.C. Allanach p.1/18
More informationSupersymmetry and other theories of Dark Matter Candidates
Supersymmetry and other theories of Dark Matter Candidates Ellie Lockner 798G Presentation 3/1/07 798G 3/1/07 1 Overview Why bother with a new theory? Why is Supersymmetry a good solution? Basics of Supersymmetry
More informationThe Higgs discovery - a portal to new physics
The Higgs discovery - a portal to new physics Department of astronomy and theoretical physics, 2012-10-17 1 / 1 The Higgs discovery 2 / 1 July 4th 2012 - a historic day in many ways... 3 / 1 July 4th 2012
More informationWashington University in St. Louis. W. Altmannshofer, BD and A. Soni, Phys. Rev. D 96, (2017) [arxiv: [hep-ph]] and in preparation.
R D ( ) Anomaly: A Model-Independent Collider Signature and Possible Hint for R-parity Violating Supersymmetry BHUPAL DEV Washington University in St. Louis W. Altmannshofer, BD and A. Soni, Phys. Rev.
More informationPhysics Beyond the. Texas A&M University. For the. Mini-Symposium May, 2009
Physics Beyond the Standard Model David Toback Texas A&M University For the David Toback, Texas CDF A&M and University DØ collaborations 1 Mini-Symposia on Searches Exciting New Search Results from the
More informationarxiv: v1 [hep-ph] 29 Dec 2017 SUSY (ATLAS) André Sopczak on behalf of the ATLAS Collaboration
arxiv:1712.10165v1 [hep-ph] 29 Dec 2017 SUSY (ATLAS) André Sopczak on behalf of the ATLAS Collaboration Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic
More informationBACKGROUND LHC Physics Program Summary LHC PHYSICS. Andrés G. Delannoy 1. 1 Vanderbilt University. 2014/07/21 1
2014/07/21 delannoy@cern.ch 1 LHC PHYSICS Andrés G. Delannoy 1 1 Vanderbilt University 2014/07/21 delannoy@cern.ch 2 1 BACKGROUND The Large Hadron Collider The Standard Model The Higgs Mechanism SuperSymmetry
More informationProperties of the Higgs Boson, and its interpretation in Supersymmetry
Properties of the Higgs Boson, and its interpretation in Supersymmetry U. Ellwanger, LPT Orsay The quartic Higgs self coupling and Supersymmetry The Next-to-Minimal Supersymmetric Standard Model Higgs
More informationPseudo-Dirac Bino as Dark Matter and Signatures of D-Type G
and Signatures of D-Type Gauge Mediation Ken Hsieh Michigan State Univeristy KH, Ph. D. Thesis (2007) ArXiv:0708.3970 [hep-ph] Other works with M. Luty and Y. Cai (to appear) MSU HEP Seminar November 6,
More informationSearches for New Phenomena with Lepton Final States at the Tevatron
Searches for New Phenomena with Lepton Final States at the Tevatron including charginos, neutralinos,, excited leptons and unexpected signatures Todd Adams Florida State University for the CDF and DØ Collaborations
More informationSearches for exotica at LHCb
Searches for exotica at LHCb Lorenzo Sestini Università di Padova e INFN LHCb Implications Workshop, Geneve-Cern, 3-11-2015 Searches for exotics LHCb can be complementary to ATLAS and CMS in the search
More informationRecent searches for new particles using 13 TeV data with ATLAS at the LHC
Recent searches for new particles using 13 TeV data with ATLAS at the LHC Vivek Jain (on behalf of the ATLAS Collaboration) State University of New York, Albany MIAMI2015 Dec 19, 2015 Beyond the Standard
More informationCMS Search for Supersymmetry at the LHC
CMS Search for Supersymmetry at the LHC [Credits] Images of Baryon Acoustic Bscillations with Cosmic Microwave Background by E.M. Huff, the SDSS-III team, and the South Pole Telescope team. Graphic by
More informationSupersymmetry. Physics Colloquium University of Virginia January 28, Stephen P. Martin Northern Illinois University
Supersymmetry Physics Colloquium University of Virginia January 28, 2011 Stephen P. Martin Northern Illinois University 1 The Standard Model of particle physics The Hierarchy Problem : why is the Higgs
More informationsin(2θ ) t 1 χ o o o
Production of Supersymmetric Particles at High-Energy Colliders Tilman Plehn { Search for the MSSM { Production of Neutralinos/Charginos { Stop Mixing { Production of Stops { R Parity violating Squarks
More informationWhere are we heading?
Where are we heading? PiTP 2013 Nathan Seiberg IAS Purpose of this talk A brief, broad brush status report of particle physics Where we are How we got here (some historical perspective) What are the problems
More informationarxiv:hep-ex/ v1 15 Jun 2006
arxiv:hep-ex/6636v 5 Jun 6 SEARCHES FOR NEW PHYSICS IN LEPTON FINAL STATES CATALIN I. CIOBANU FOR THE CDF AND DØ COLLABORATIONS Department of Physics, University of Illinois at Urbana-Champaign, W. Green
More informationLittle Higgs Models Theory & Phenomenology
Little Higgs Models Theory Phenomenology Wolfgang Kilian (Karlsruhe) Karlsruhe January 2003 How to make a light Higgs (without SUSY) Minimal models The Littlest Higgs and the Minimal Moose Phenomenology
More informationSUSY Searches : lessons from the first LHC Run
SUSY Searches : lessons from the first LHC Run P. Pralavorio, On behalf of the ATLAS and CMS Collaborations. CPPM, Aix-Marseille Univ. and CNRS/INP3, 63 avenue de Luminy, case 9, 388 Marseille cedex 9,
More informationBeyond the Standard Model searches with top quarks at D0
Beyond the Standard Model searches with top quarks at D0 University of Manchester Oxford Road Manchester, M13 9PL, UK E-mail: peters@fnal.gov Due to its high mass and short lifetime, the top quark plays
More informationProbing Supersymmetric Connection with Dark Matter
From サイエンス 82 Probing Supersymmetric Connection with Dark Matter Taken from Science, 1982 Teruki Kamon Department of Physics Texas A&M University November 3, 2005 Physics Colloquium, Texas Tech University
More informationATLAS Run II Exotics Results. V.Maleev (Petersburg Nucleare Physics Institute) on behalf of ATLAS collaboration
ATLAS Run II Exotics Results V.Maleev (Petersburg Nucleare Physics Institute) on behalf of ATLAS collaboration What is the dark matter? Is the Higgs boson solely responsible for electroweak symmetry breaking
More informationNaturalizing SUSY with the relaxion and the inflaton
Naturalizing SUSY with the relaxion and the inflaton Tony Gherghetta KEK Theory Meeting on Particle Physics Phenomenology, (KEK-PH 2018) KEK, Japan, February 15, 2018 [Jason Evans, TG, Natsumi Nagata,
More informationThe Standard Model and Beyond
The Standard Model and Beyond Nobuchika Okada Department of Physics and Astronomy The University of Alabama 2011 BCVSPIN ADVANCED STUDY INSTITUTE IN PARTICLE PHYSICS AND COSMOLOGY Huê, Vietnam, 25-30,
More informationProbing SUSY Dark Matter at the LHC
Probing SUSY Dark Matter at the LHC Kechen Wang Mitchell Institute for Fundamental Physics and Astronomy Texas A&M University Preliminary Examination, Feb, 24 OUTLINE Supersymmetry dark matter (DM) Relic
More informationSUSY at the LHC. Bhaskar Dutta Texas A&M University. LHCP 2018, 4-9 June
SUSY at the LHC Bhaskar Dutta Texas A&M University LHCP 2018, 4-9 June 2018 1 SUSY Solutions of many puzzles: DM candidate associated with 27% of the Universe Hierarchy problem (quantum correction of the
More informationarxiv: v1 [hep-ex] 5 Sep 2014
Proceedings of the Second Annual LHCP CMS CR-2014/199 September 8, 2014 Future prospects of Higgs Physics at CMS arxiv:1409.1711v1 [hep-ex] 5 Sep 2014 Miguel Vidal On behalf of the CMS Experiment, Centre
More informationThe Physics of Heavy Z-prime Gauge Bosons
The Physics of Heavy Z-prime Gauge Bosons Tevatron LHC LHC LC LC 15fb -1 100fb -1 14TeV 1ab -1 14TeV 0.5TeV 1ab -1 P - =0.8 P + =0.6 0.8TeV 1ab -1 P - =0.8 P + =0.6 χ ψ η LR SSM 0 2 4 6 8 10 12 2σ m Z'
More informationMeasuring supersymmetry at the large hadron collider
PRAMANA cfl Indian Academy of Sciences Vol. 60, No. 2 journal of February 2003 physics pp. 239 247 Measuring supersymmetry at the large hadron collider BCALLANACH TH Division, CERN, Geneva 23, CH 1211,
More informationDark Matter Implications for SUSY
Dark Matter Implications for SUSY Sven Heinemeyer, IFCA (CSIC, Santander) Madrid, /. Introduction and motivation. The main idea 3. Some results 4. Future plans Sven Heinemeyer, First MultiDark workshop,
More informationTwin Higgs Theories. Z. Chacko, University of Arizona. H.S Goh & R. Harnik; Y. Nomura, M. Papucci & G. Perez
Twin Higgs Theories Z. Chacko, University of Arizona H.S Goh & R. Harnik; Y. Nomura, M. Papucci & G. Perez Precision electroweak data are in excellent agreement with the Standard Model with a Higgs mass
More informationStatus of ATLAS+CMS SUSY searches
Status of ATLAS+CMS SUSY searches Renaud Brunelière Uni. Freiburg ~ ~ pp b b1 X candidate 2 b-tagged jets pt ~ 152 GeV and 96 GeV E miss T ~ 205 GeV, M CT (bb) ~ 201 GeV Status of ATLAS+CMS SUSY searches
More informationLessons From the First Round of SUSY Searches on the Way to 1 fb -1 at the LHC
Lessons From the First Round of SUSY Searches on the Way to 1 fb -1 at the LHC Philip Schuster Perimeter Institute for Theoretical Physics/ Institute for Advanced Studies WCLHC Meeting, UCSB April 15,
More informationSUSY and Exotics. UK HEP Forum"From the Tevatron to the LHC, Cosener s House, May /05/2009 Steve King, UK HEP Forum '09, Abingdon 1
SUSY and Exotics Standard Model and the Origin of Mass Puzzles of Standard Model and Cosmology Bottom-up and top-down motivation Extra dimensions Supersymmetry - MSSM -NMSSM -E 6 SSM and its exotics UK
More informationSearch for squarks and gluinos with the ATLAS detector. Jeanette Lorenz (LMU München)
Search for squarks and gluinos with the ATLAS detector Jeanette Lorenz (LMU München) Research Area B Science Day, Supersymmetry Symmetry between fermions and bosons Only possible extension of Poincare
More informationarxiv:hep-ph/ v1 17 Apr 2000
SEARCH FOR NEW PHYSICS WITH ATLAS AT THE LHC arxiv:hep-ph/0004161v1 17 Apr 2000 V.A. MITSOU CERN, EP Division, CH-1211 Geneva 23, Switzerland and University of Athens, Physics Department, Nuclear and Particle
More informationProbing SUSY Contributions to Muon g-2 at LHC and ILC
Probing SUSY Contributions to Muon g-2 at LHC and ILC Motoi Endo (Tokyo) Based on papers in collaborations with ME, Hamaguchi, Iwamoto, Yoshinaga ME, Hamaguchi, Kitahara, Yoshinaga ME, Hamaguchi, Iwamoto,
More informationSearching for sneutrinos at the bottom of the MSSM spectrum
Searching for sneutrinos at the bottom of the MSSM spectrum Arindam Chatterjee Harish-Chandra Research Insitute, Allahabad In collaboration with Narendra Sahu; Nabarun Chakraborty, Biswarup Mukhopadhyay
More informationPhysics 662. Particle Physics Phenomenology. February 21, Physics 662, lecture 13 1
Physics 662 Particle Physics Phenomenology February 21, 2002 Physics 662, lecture 13 1 Physics Beyond the Standard Model Supersymmetry Grand Unified Theories: the SU(5) GUT Unification energy and weak
More informationarxiv: v1 [hep-ex] 8 Nov 2010
Searches for Physics Beyond the Standard Model at CMS Sung-Won Lee, on behalf of the CMS Collaboration Texas Tech University, Lubbock, TX 799, USA Recent results on searches for physics beyond the Standard
More informationStatus of Supersymmetric Models
Status of Supersymmetric Models Sudhir K Vempati CHEP, IISc Bangalore Institute of Physics, Bhubhaneswar Feb, 203 Outline Why Supersymmetry? Structure of MSSM Experimental Status New models of SUSY S/(S+B)
More informationComposite Higgs and Flavor
Composite Higgs and Flavor Xiaohong Wu East China University of Science and Technology Seminar @ ICTS, Jun. 6, 2013 125GeV SM-like Higgs Discovered p 0 5 3-3 -5-7 -9 1 3 Combined observed γγ observed llll
More informationWhere are we heading? Nathan Seiberg IAS 2014
Where are we heading? Nathan Seiberg IAS 2014 Purpose of this talk A brief, broad brush status report of particle physics Where we are How we got here (some historical perspective) Problems and challenges
More informationNatural Electroweak Symmetry Breaking in NMSSM and Higgs at 100 GeV
Natural Electroweak Symmetry Breaking in NMSSM and Higgs at 100 GeV Radovan Dermíšek Institute for Advanced Study, Princeton R.D. and J. F. Gunion, hep-ph/0502105 R.D. and J. F. Gunion, hep-ph/0510322
More informationSeaches fo log-lived paticles with displaced signatues at the LHC. Daniela Salvatore (INFN Cosenza) on behalf of the ATLAS and CMS Collaborations
Seaches fo log-lived paticles with displaced signatues at the LHC Daniela Salvatore (INFN Cosenza) on behalf of the ATLAS and CMS Collaborations Outline A review of the most recent results from ATLAS &
More informationSearch for physics beyond the Standard Model at LEP 2
Search for physics beyond the Standard Model at LEP 2 Theodora D. Papadopoulou NTU Athens DESY Seminar 28/10/03 1 Outline Introduction about LEP Alternatives to the Higgs mechanism Technicolor Contact
More informationStudy of supersymmetric tau final states with Atlas at LHC: discovery prospects and endpoint determination
Study of supersymmetric tau final states with Atlas at LHC: discovery prospects and endpoint determination University of Bonn Outlook: supersymmetry: overview and signal LHC and ATLAS invariant mass distribution
More informationTop Quark Physics at the LHC
Top Quark Physics at the LHC Ayana Arce HEP 0 Lectures #7 March 4, 203 Outline Introduction 2 Why are top quarks interesting? 3 Creating Top Quarks 4 Identifying Top Quarks 5 Some LHC results 6 Beyond
More informationDmitri Sidorov Oklahoma State University On behalf of the ATLAS Collaboration DIS2014, 04/28/2014
Dmitri Sidorov Oklahoma State University On behalf of the ATLAS Collaboration DIS4, 4/8/4 Introduc)on We discovered a Standard Model (SM) like Higgs boson at mh=5 GeV. This is not the end of the story.
More informationSearch for top squark pair production and decay in four bodies, with two leptons in the final state, at the ATLAS Experiment with LHC Run2 data
Search for top squark pair production and decay in four bodies, with two leptons in the final state, at the ATLAS Experiment with LHC Run data Marilea Reale INFN Lecce and Università del Salento (IT) E-mail:
More informationBeyond the MSSM (BMSSM)
Beyond the MSSM (BMSSM) Nathan Seiberg Strings 2007 SUSY 2012 Based on M. Dine, N.S., and S. Thomas, to appear Assume The LHC (or the Tevatron) will discover some of the particles in the MSSM. These include
More informationHiggs Searches and Properties Measurement with ATLAS. Haijun Yang (on behalf of the ATLAS) Shanghai Jiao Tong University
Higgs Searches and Properties Measurement with ATLAS Haijun Yang (on behalf of the ATLAS) Shanghai Jiao Tong University LHEP, Hainan, China, January 11-14, 2013 Outline Introduction of SM Higgs Searches
More informationCarlos Sandoval Universidad Antonio Nariño On behalf of the ATLAS collaboration DIS Kobe, Japan
Carlos Sandoval Universidad Antonio Nariño On behalf of the ATLAS collaboration DIS 2018 - Kobe, Japan 1 Search for long-lived massive particles (LLP) in events with displaced vertices (DV): arxiv:1710.04901v1
More informationPhysics at the LHC: from Standard Model to new discoveries
Physics at the LHC: from Standard Model to new discoveries Kirill Melnikov University of Hawaii May 2006 Sendai, June 2006 Physics at the LHC: from Standard Model to new discoveries p. 1/22 Outline Standard
More information