Phenomenological Aspects of Local String Models
|
|
- Miles Holland
- 5 years ago
- Views:
Transcription
1 Phenomenological Aspects of Local String Models F. Quevedo, Cambridge/ICTP. PASCOS-2011, Cambridge. M. Dolan, S. Krippendorf, FQ; arxiv: S. Krippendorf, M. Dolan, A. Maharana, FQ; arxiv: C. Burgess, A. Maharana, FQ; arxiv: C. Burgess, M. Cicoli, M. Gomez-Reino, FQ, G. Tasinato, I. Zavala; arxiv
2 String Phenomenologists: Strategic (long term) Plan: String theory scenario that satisfies all particle physics and cosmological observations and hopefully lead to measurable predictions
3 String Phenomenology Too many string models? (Heterotic, IIA, I, IIB, Landscape,...) Or too few models? (Realistic?)
4 Recall LHC is running: Hierarchy Problem Proposals TeV SUSY Warped extra dimensions Large extra dimensions UV complete? How to fix size of extra dimensions? Unification, Flavour, Proton stability,
5 Challenges for String Models Gauge and matter structure of SM Hierarchy of masses (including neutrinos) Flavor CKM, PMNS mixing, CP no FCNC Hierarchy of gauge couplings (unification?) Stable proton + baryogenesis Dark matter (+ avoid overclosing) Inflation or alternative for CMB fluctuations Dark energy N.B. If ONE of them does not work, rule out the model!!!
6 String Model Building: Global Models (e.g. Heterotic) Local Brane Models (e.g. IIB)
7 Bottom-up Approach Local (brane) Properties Gauge group Chiral spectrum Yukawa couplings Gauge couplings Proton stability Flavour symmetries Global (bulk) Properties Moduli Stabilisation Cosmological constant SUSY Breaking Scales (unification, axions, ) Inflation, Reheating Cosmological moduli problem
8 MODULI STABILISATION 4-cycle size: τ (Kahler moduli) 3-cycle size: U (Complex structure moduli) + String Dilaton: S
9 LARGE Volume Scenario
10 Exponentially Large Volumes Example : Perturbative (alpha ) corrections to K Fluxes Volume Nonperturbative corrections to W Exponentially large volumen + Broken SUSY!!!
11 e.g.swiss Cheese Calabi-Yau s Very generic Blumenhagen, et al., Grimm et al., Kreuzer et al. 08
12 e.g.: Anisotropic Moduli Fixing K3 Fibrations: Poly-Instantons Blumenhagen et al. K3! size t 2 2 i=3, j=1
13 (For W 0 =10, g s =0.01, etc.) Living on the edge!!
14 Relevant Scales String scale Ms=M P /V 1/2 Kaluza-Klein scale M KK =M P /V 2/3 Gravitino mass m 3/2 =W 0 M P /V Volume modulus mass M V =M p /V 3/2 Lighter (fibre) moduli M l =M p /V 5/3
15 Question: Unnaturally light scalars?
16 Loop induced heavy masses Without SUSY With SUSY Übernaturalness
17 General Scenarios M String = M GUT ~ GeV (V~10 5 ) W 0 ~10-11 <<1 (or W 0 ~1 plus warping) to get TeV soft terms Fits with coupling unification Natural scale of most string inflation models. Axi-volume quintessence scale (w= ) M String = M int. ~ GeV (V~10 15 ) W 0 ~1 m 3/2 ~1 TeV (solves hierarchy problem!!!) QCD axion scale neutrino masses LLHH M String = 1 TeV (V~10 30 ) W 0 ~1 Most exciting, 5th Force OK m~10-3 ev, if SM non SUSY. Back reaction?
18 Cosmological Inflation
19 Kähler Moduli Inflation (Blow-up) ~ Small field inflation (r<<<1) No fine-tuning!! 0.960<n<0.967 Loop corrections?? volume V τ n
20 Fibre Inflatons Burgess, Cicoli, FQ V
21 n s r r N e n s Observable gravity waves! (can be ruled out by Planck if they observe them and CMBpol if they do not observe them)
22 Stringy Curvaton Scenario
23 Curvaton Mass: Non-Gaussianities Examples
24 Model Building
25 LARGE Volume Implies Standard Model is localised! ( SM D7 cannot wrap the exponentially large cycle since g 2 =1/V 2/3 ) Bottom-up (AIQU 2000) Aldazabal et al. Fractional D3/D7 Brane at a singularity (collapsed cycle) Magnetised D7 - Brane wrapping a small four-cycle Local F-Theory Blumenhagen et al. Donagi, Wijnholt; Vafa, Heckman,
26
27 D3 Branes at Singularities Orbifolds Del Pezzos 0-8 (dpn=p 2 blown-up at n arbitrary points c 1 >0, b 2 =n+1, 2n-8 parameters, n>3) Larger class: Toric singularities (infinite class of models!!!)
28 Toric Singularities Einstein-Sasaki T 3 Fibration Over rational polyhedral cone D3-branes Toric Diagram
29 Spectrum and couplings Dimer and Quiver Diagrams (e.g. dp0)
30 Del Pezzo Singularities/Quivers e.g. del Pezzo 0 (C 3 /Z 3 ) n i D3 Branes (group ПU(n i )) m j D7 Branes (group ПU(m i )) Arrows=bi-fundamentals 3 Families! Anomaly/tadpole cancelation D7s:Franco-Uranga Hypercharge (n i n j )
31 Standard Models LR-Symmetric Models Pati-Salam Models Trinification Models
32 General Results Toric 1.Maximum number of families = 3 (except for one case F0 with 4 families, dual to a 2-family model, also non-toric phases unbounded) 2. Quark Mass hierarchy: (M,m,0) with M>>m (structure of Yukawas imply one zero e- value, only dp0 has m=m)
33 Generic Features Aproximate Flavour Symmetries Hyperweak Interactions (SM fields charged under D7 gauge interactions g 2 =1/V 2/3 <<<1, CDF?) Burgess et al Conlon, Maharana, FQ
34 The Needle on a Haystack (search with a magnet!) Not simple GUT groups (SU(5), SO(10), ) Search for PS, LR, SM, Many U(1) s but if U(1) Y = Σ i U(1) i, wrong normalisation for MSSM unification (5/3). Also keep hypercharge massless in compact case. Then U(1) Y in G non-abelian (SU(4), ) ALL SM in D3 s at least G=PS, SU(3) 3
35 Minimal del Pezzo? dp0 no hierarchy of masses (unless noncommutative), no CKM dp1, dp2 no CKM or PMNS, no control of kinetic terms (FCNC?). dp3 flavor diagonal kinetic terms and realistic CKM, PMNS matrices.
36 Realistic Pati-Salam Model (dp3) Break symmetry to SM (+ U(1) or LR) Breaking U(1) to SM: RH sneutrino (R-parity broken) Quark+ lepton mass hierarchies See-saw neutrino masses Stable proton CKM, CP Controlled kinetic terms!!!!! Gauge Unification
37
38
39 Quarks+leptons
40 CKM Matrix PMNS Matrix 14 Parameters vs 21 Observables
41 Gauge Coupling Unification String scale value of all couplings given by dilaton so unification. Standard GUT scale unification or intermediate scale Ms>10 12 GeV Need moduli stabilisation to fix scales.. (Large volume scenarios?...)
42 SUSY BREAKING
43 SUSY Breaking Approximate Universality CAQS, Conlon (Mirror Mediation) Two cases: F SM 0 soft terms~m 3/2 Ms~10 12 GeV F SM =0 soft terms <<m 3/2 or~m 3/2
44 CONCLUSIONS Continuous progress on local string models (TeV warping, TeV gravity, TeV SUSY!?) Several SUSY breaking scenarios (m~m 3/2, m 3/2 3/2 /M p 1/2, m 3/22 /M p ), (M s ~ GeV) Local model building (dp3: 3-families, mass hierarchies (M,m,0), CKM, PMNS, Unification, proton stable, ) Concrete models of inflation (gravity waves and non-gaussianities) Many open questions
String Compactifications and low-energy SUSY: The last attempts?
String Compactifications and low-energy SUSY: The last attempts? F. Quevedo, ICTP/Cambridge Strings 2015, Bangalore, June 2015 Collaborations with (linear combinations of): L. Aparicio, M. Cicoli, B Dutta,
More informationPhenomenological Aspects of LARGE Volume Models
Phenomenological Aspects of LARGE Volume Models Joseph P. Conlon (Cavendish Laboratory & DAMTP, Cambridge) 15th Irish Quantum Field Theory Meeting May(nooth) 2008 Phenomenological Aspects of LARGE Volume
More informationThe LARGE Volume Scenario: a status report
Stockholm, June 6th 2011 Talk Structure Moduli Stabilisation and Scales Variations The LARGE Volume Scenario The LARGE Volume Scenario (LVS) comes from considering alpha corrections to IIB flux compactifications.
More informationHierarchy Problems in String Theory: An Overview of the Large Volume Scenario
Hierarchy Problems in String Theory: An Overview of the Large Volume Scenario Joseph P. Conlon (Cavendish Laboratory & DAMTP, Cambridge) Stockholm, February 2008 Hierarchy Problems in String Theory: An
More informationAxion-Like Particles from Strings. Andreas Ringwald (DESY)
Axion-Like Particles from Strings. Andreas Ringwald (DESY) Origin of Mass 2014, Odense, Denmark, May 19-22, 2014 Hints for intermediate scale axion-like particles > Number of astro and cosmo hints pointing
More informationKähler Potentials for Chiral Matter in Calabi-Yau String Compactifications
Kähler Potentials for Chiral Matter in Calabi-Yau String Compactifications Joseph P. Conlon DAMTP, Cambridge University Kähler Potentials for Chiral Matter in Calabi-Yau String Compactifications p. 1/4
More informationNeutrinos and Fundamental Symmetries: L, CP, and CP T
Neutrinos and Fundamental Symmetries: L, CP, and CP T Outstanding issues Lepton number (L) CP violation CP T violation Outstanding issues in neutrino intrinsic properties Scale of underlying physics? (string,
More informationKähler Potentials for Chiral Matter in Calabi-Yau String Compactifications
Kähler Potentials for Chiral Matter in Calabi-Yau String Compactifications Joseph P. Conlon DAMTP, Cambridge University Kähler Potentials for Chiral Matter in Calabi-Yau String Compactifications p. 1/4
More informationString Phenomenology
String Phenomenology Hans Peter Nilles Physikalisches Institut Universität Bonn String Phenomenology, DESY, Hamburg, April 2012 p. 1/53 Strategy String models as a top-down approach to particle physics
More informationStringy Origins of Cosmic Structure
The D-brane Vector Curvaton Department of Mathematics University of Durham String Phenomenology 2012 Outline Motivation 1 Motivation 2 3 4 Fields in Type IIB early universe models Figure: Open string inflation
More informationHeterotic Supersymmetry
Heterotic Supersymmetry Hans Peter Nilles Physikalisches Institut Universität Bonn Heterotic Supersymmetry, Planck2012, Warsaw, May 2012 p. 1/35 Messages from the heterotic string Localization properties
More informationStrings and Phenomenology: Chalk and Cheese?
Strings and Phenomenology: Chalk and Cheese? Joseph P. Conlon Particle Physics Seminar, January 2009 Strings and Phenomenology: Chalk and Cheese? p. 1/3 Thanks to my collaborators: Shehu Abdussalam, Ben
More informationF-theory and Particle Physics
F-theory and Particle Physics Eran Palti (Ecole Polytechnique, Paris) Heidelberg, April 2011 Unification of fields in the UV has been a recurring theme in particle physics Forces Electric + Magnetic +
More informationSoft Supersymmetry Breaking Terms in String Compactifications
Soft Supersymmetry Breaking Terms in String Compactifications Joseph P. Conlon DAMTP, Cambridge University Soft Supersymmetry Breaking Terms in String Compactifications p. 1/4 This talk is based on hep-th/0609180
More informationCrosschecks for Unification
Crosschecks for Unification Hans Peter Nilles Physikalisches Institut Universität Bonn Crosschecks for Unification, Planck09, Padova, May 2009 p. 1/39 Questions Do present observations give us hints for
More informationPredictions from F-theory GUTs. (High vs. low-scale SUSY; proton decay)
Predictions from F-theory GUTs Arthur Hebecker (Heidelberg) (including some original work with James Unwin (Notre Dame)) Outline: Motivation (Why F-theory GUTs?) Proton decay Flavor; neutrino masses Gauge
More informationDirect generation of a Majorana mass for the Neutron from exotic instantons!
Direct generation of a Majorana mass for the Neutron from exotic instantons!? Andrea Addazi (Aquila, LNGS, INFN) Hot problems in particle physics, LNGS 2015 References 1) A. Addazi and M. Bianchi, arxiv:1407.2897
More informationThe discrete beauty of local GUTs
The discrete beauty of local GUTs Hans Peter Nilles Physikalisches Institut Universität Bonn The discrete beauty of local grand unification, GUTs and Strings, MPI München, February 2010 p. 1/33 Outline
More informationGauge Threshold Corrections for Local String Models
Gauge Threshold Corrections for Local String Models Stockholm, November 16, 2009 Based on arxiv:0901.4350 (JC), 0906.3297 (JC, Palti) Local vs Global There are many different proposals to realise Standard
More informationAlternatives to the GUT Seesaw
Alternatives to the GUT Seesaw Motivations Higher-dimensional operators String instantons Other (higher dimensions, Higgs triplets) Motivations Many mechanisms for small neutrino mass, both Majorana and
More informationStrings and Particle Physics
Strings and Particle Physics Hans Peter Nilles Physikalisches Institut Universität Bonn Germany Strings and Particle Physics, SUSY07 p.1/33 Questions What can we learn from strings for particle physics?
More informationTheory III: String Theory. presented by Dieter Lüst, MPI and LMU-München
Theory III: String Theory presented by Dieter Lüst, MPI and LMU-München The string theory group at MPI (started in 2004): The string theory group at MPI (started in 2004): Permanent members: R. Blumenhagen,
More informationarxiv: v1 [hep-th] 3 Dec 2012
International Journal of Modern Physics A c World Scientific Publishing Company HRI/ST/1212 CPHT-RR088.1112 arxiv:1212.0555v1 [hep-th] 3 Dec 2012 MODELS OF PARTICLE PHYSICS FROM TYPE IIB STRING THEORY
More informationHow does neutrino confine GUT and Cosmology? July T. Fukuyama Center of Quantum Universe, Okayama-U
How does neutrino confine GUT and Cosmology? July 11 08 T. Fukuyama (Rits) @ Center of Quantum Universe, Okayama-U 1. Introduction Neutrino oscillation breaks SM. Then is OK? does not predict 1. Gauge
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 informationHeterotic Brane World
Heterotic Brane World Hans Peter Nilles Physikalisches Institut Universität Bonn Germany Based on work with S. Förste, P. Vaudrevange and A. Wingerter hep-th/0406208, to appear in Physical Review D Heterotic
More informationKähler Potentials for Chiral Matter in Calabi-Yau String Compactifications
Kähler Potentials for Chiral Matter in Calabi-Yau String Compactifications Joseph P. Conlon DAMTP, Cambridge University Kähler Potentials for Chiral Matter in Calabi-Yau String Compactifications p. 1/3
More informationParticles and Strings Probing the Structure of Matter and Space-Time
Particles and Strings Probing the Structure of Matter and Space-Time University Hamburg DPG-Jahrestagung, Berlin, March 2005 2 Physics in the 20 th century Quantum Theory (QT) Planck, Bohr, Heisenberg,...
More informationE 6 Spectra at the TeV Scale
E 6 Spectra at the TeV Scale Instituts-Seminar Kerne und Teilchen, TU Dresden Alexander Knochel Uni Freiburg 24.06.2010 Based on: F. Braam, AK, J. Reuter, arxiv:1001.4074 [hep-ph], JHEP06(2010)013 Outline
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 informationGrand Unification and Strings:
Grand Unification and Strings: the Geography of Extra Dimensions Hans Peter Nilles Physikalisches Institut, Universität Bonn Based on work with S. Förste, P. Vaudrevange and A. Wingerter hep-th/0406208,
More informationThe mass of the Higgs boson
The mass of the Higgs boson LHC : Higgs particle observation CMS 2011/12 ATLAS 2011/12 a prediction Higgs boson found standard model Higgs boson T.Plehn, M.Rauch Spontaneous symmetry breaking confirmed
More informationSupersymmetry V. Hitoshi Murayama (Berkeley) PiTP 05, IAS
Supersymmetry V Hitoshi Murayama (Berkeley) PiTP 05, IAS Plan Mon: Non-technical Overview what SUSY is supposed to give us Tue: From formalism to the MSSM Global SUSY formalism, Feynman rules, soft SUSY
More informationSupersymmetric Standard Models in String Theory
Supersymmetric Standard Models in String Theory (a) Spectrum (b) Couplings (c) Moduli stabilisation Type II side [toroidal orientifolds]- brief summary- status (a),(b)&(c) Heterotic side [Calabi-Yau compactification]
More informationNew Toric Swiss Cheese Solutions
String Phenomenology 2017 (Based on arxiv:1706.09070 [hep-th]) Northeastern University 1/31 Outline Motivation 1 Motivation 2 CY Geometry Large Volume Scenario 3 Explicit Toric 4 2/31 Abundance of Moduli
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 informationBeyond the Standard Model
Beyond the Standard Model The Standard Model Problems with the Standard Model New Physics Supersymmetry Extended Electroweak Symmetry Grand Unification References: 2008 TASI lectures: arxiv:0901.0241 [hep-ph]
More informationWhere are we heading? Nathan Seiberg IAS 2016
Where are we heading? Nathan Seiberg IAS 2016 Two half-talks A brief, broad brush status report of particle physics and what the future could be like The role of symmetries in physics and how it is changing
More informationPati-Salam GUT-Flavour Models with Three Higgs Generations
Pati-Salam GUT-Flavour Models with Three Higgs Generations Florian Hartmann in collaboration with Wolfgang Kilian and Karsten Schnitter based on: JHEP 1405 (2014) 064 and arxiv:1405.1901 Universität Siegen
More informationSterile Neutrinos from the Top Down
Sterile Neutrinos from the Top Down Active-sterile mixing The landscape Small Dirac/Majorana masses The mini-seesaw Light Sterile Neutrinos: A White Paper (K. Abazajian et al), 1204.5379 Neutrino Masses
More informationA Domino Theory of Flavor
A Domino Theory of Flavor Peter Graham Stanford with Surjeet Rajendran arxiv:0906.4657 Outline 1. General Domino Framework 2. Yukawa Predictions 3. Experimental Signatures General Domino Framework Inspiration
More informationF-theory effective physics via M-theory. Thomas W. Grimm!! Max Planck Institute for Physics (Werner-Heisenberg-Institut)! Munich
F-theory effective physics via M-theory Thomas W. Grimm Max Planck Institute for Physics (Werner-Heisenberg-Institut) Munich Ahrenshoop conference, July 2014 1 Introduction In recent years there has been
More informationSupersymmetry, Dark Matter, and Neutrinos
Supersymmetry, Dark Matter, and Neutrinos The Standard Model and Supersymmetry Dark Matter Neutrino Physics and Astrophysics The Physics of Supersymmetry Gauge Theories Gauge symmetry requires existence
More informationGeography on Heterotic Orbifolds
Geography on Heterotic Orbifolds Hans Peter Nilles Physikalisches Institut, Universität Bonn and CERN, Geneva Based on work with S. Förste, P. Vaudrevange and A. Wingerter hep-th/0406208, hep-th/0504117
More informationNeutrinos: status, models, string theory expectations
Neutrinos: status, models, string theory expectations Introduction Neutrino preliminaries and status Models String embeddings Intersecting brane The Z 3 heterotic orbifold Embedding the Higgs triplet Outlook
More informationAccidental SUSY at the LHC
Accidental SUSY at the LHC Tony Gherghetta (University of Melbourne) PACIFIC 2011, Moorea, French Polynesia, September 12, 2011 with Benedict von Harling and Nick Setzer [arxiv:1104.3171] 1 What is the
More informationOrientifold/Flux String vacua, supersymmetry breaking and Strings at the LHC. Dieter Lüst, LMU (Arnold Sommerfeld Center) and MPI München
Orientifold/Flux String vacua, supersymmetry breaking and Strings at the LHC Dieter Lüst, LMU (Arnold Sommerfeld Center) and MPI München I) Introduction Geometry: Calabi-Yau spaces, mirror symmetry, generalized
More informationCosmological Relaxation of the Electroweak Scale
the Relaxion Cosmological Relaxation of the Electroweak Scale with P. Graham and D. E. Kaplan arxiv: 1504.07551 The Hierarchy Problem The Higgs mass in the standard model is sensitive to the ultraviolet.
More informationInflation in String Theory. mobile D3-brane
Inflation in String Theory mobile D3-brane Outline String Inflation as an EFT Moduli Stabilization Examples of String Inflation Inflating with Branes Inflating with Axions (Inflating with Volume Moduli)
More informationarxiv: v3 [hep-ph] 16 Jun 2007
Preprint typeset in JHEP style - HYPER VERSION DAMTP-27-33 arxiv:74.343v3 [hep-ph] 6 Jun 27 Sparticle Spectra and LHC Signatures for Large Volume String Compactifications J. P. Conlon, C. H. Kom, K. Suruliz,
More informationAn algorithmic approach
An algorithmic approach to string compactification Lara B. Anderson March 25th, 2015 Virginia Tech Work in this done in collaboration with: Model Building: J. Gray, A. Lukas and E. Palti: arxiv:1106.4804,
More informationTheory and phenomenology of hidden U(1)s from string compactifications
Theory and phenomenology of hidden U(1)s from string compactifications Andreas Ringwald DESY Corfu Summer Institute Workshop on Cosmology and Strings, Sept. 6-13, 2009, Corfu, GR Theory and phenomenology
More informationThe Constrained E 6 SSM
The Constrained E 6 SSM and its signatures at the LHC Work with Moretti and Nevzorov; Howl; Athron, Miller, Moretti, Nevzorov Related work: Demir, Kane, T.Wang; Langacker, Nelson; Morrissey, Wells; Bourjaily;
More informationF. Börkeroth, F. J. de Anda, I. de Medeiros Varzielas, S. F. King. arxiv:
F. Börkeroth, F. J. de Anda, I. de Medeiros Varzielas, S. F. King S FLASY 2015 arxiv:1503.03306 Standard Model Gauge theory SU(3)C X SU(2)L X U(1)Y Standard Model Gauge theory SU(3)C X SU(2)L X U(1)Y SM:
More informationMixed Wino-Axion DM in String Theory and the 130 GeV γ-line signal
Mixed Wino-Axion DM in String Theory and the 130 GeV γ-line signal Piyush Kumar June 27 th, 2012 String Phenomenology Conference Isaac Newton Institute, Cambridge Based on: 1205.5789 (Acharya, Kane, P.K.,
More informationPhysics of Type II and Heterotic SM & GUT String Vacua
Physics of Type II and Heterotic SM & GUT String Vacua (a) Spectrum (b) Couplings (c) Moduli stabilisation Type II side [toroidal orientifolds]- summary (a)&(b) [(c)- no time] new results on SU(5) GUT
More informationMoritz McGarrie with S.Abel (IPPP, Durham)!
Planck 24 Natural Supersymmetry Breaking with Meta-stable Vacua Moritz McGarrie with S.Abel (IPPP, Durham) ArXiv: 44:38 (JHEP) Natural SUSY checklist The 26 GeV Higgs- NMSSM or non decoupled D-terms e.g.
More informationIII. Stabilization of moduli in string theory II
III. Stabilization of moduli in string theory II A detailed arguments will be given why stabilization of certain moduli is a prerequisite for string cosmology. New ideas about stabilization of moduli via
More informationNew Physics from the String Vacuum
New Physics from the String Vacuum The string vacuum Extended MSSM quivers String remnants Small neutrino masses Quivers: Cvetič, Halverson, PL, JHEP 1111,058 (1108.5187) Z : Rev.Mod.Phys.81,1199 (0801.145)
More informationWho is afraid of quadratic divergences? (Hierarchy problem) & Why is the Higgs mass 125 GeV? (Stability of Higgs potential)
Who is afraid of quadratic divergences? (Hierarchy problem) & Why is the Higgs mass 125 GeV? (Stability of Higgs potential) Satoshi Iso (KEK, Sokendai) Based on collaborations with H.Aoki (Saga) arxiv:1201.0857
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 informationLight hidden U(1)s in LARGE volume string compactifications
Light hidden U(1)s in LARGE volume string compactifications Andreas Ringwald DESY Dark Forces Workshop Searches for New Forces at the GeV-Scale, Sept. 24-26, 2009, SLAC, CA, USA Light hidden U(1)s... 1
More informationNeutrino Mass in Strings
Neutrino Mass in Strings Introduction Neutrino preliminaries Models String embeddings Intersecting brane The Z 3 heterotic orbifold Embedding the Higgs triplet Outlook Neutrino mass Nonzero mass may be
More informationarxiv: v1 [hep-th] 22 Oct 2017
Axions in Type IIA Superstring Theory and Dark Matter Adil Belhaj a, Salah-Eddine Ennadifi b, arxiv:1710.08030v1 [hep-th] 22 Oct 2017 a LIRST, Polydisciplinary Faculty, Sultan Moulay Slimane University
More informationsolving the hierarchy problem Joseph Lykken Fermilab/U. Chicago
solving the hierarchy problem Joseph Lykken Fermilab/U. Chicago puzzle of the day: why is gravity so weak? answer: because there are large or warped extra dimensions about to be discovered at colliders
More informationSupersymmetry Breaking
Supersymmetry Breaking LHC Search of SUSY: Part II Kai Wang Phenomenology Institute Department of Physics University of Wisconsin Madison Collider Phemonology Gauge Hierarchy and Low Energy SUSY Gauge
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 informationOpen Office (Linux) A String Manifesto. Marcus Berg CoPS. M.B., Haack, Pajer '07 M.B., Haack, Körs '05, '04
Open Office (Linux) A String Manifesto Marcus Berg CoPS M.B., Haack, Pajer '07 M.B., Haack, Körs '05, '04 Open Office (Linux) A String Manifesto Marcus Berg CoPS Summary of current state of affairs Statement
More informationString Phenomenology ???
String Phenomenology Andre Lukas Oxford, Theoretical Physics d=11 SUGRA IIB M IIA??? I E x E 8 8 SO(32) Outline A (very) basic introduction to string theory String theory and the real world? Recent work
More informationDynamical supersymmetry breaking, with Flavor
Dynamical supersymmetry breaking, with Flavor Cornell University, November 2009 Based on arxiv: 0911.2467 [Craig, Essig, Franco, Kachru, GT] and arxiv: 0812.3213 [Essig, Fortin, Sinha, GT, Strassler] Flavor
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 informationAnomalous discrete symmetries in D-brane models
Anomalous discrete symmetries in D-brane models Shohei Uemura Maskawa Institute for Science and Culture, Kyoto Sangyo University based on a work in progress with Tatsuo Kobayashi (Hokkaido University),
More informationVacuum Energy and the cosmological constant puzzle
Vacuum Energy and the cosmological constant puzzle Cosmological constant puzzle: Steven Bass Accelerating Universe: believed to be driven by energy of nothing (vacuum) Positive vacuum energy = negative
More informationarxiv: v2 [hep-th] 17 Oct 2018
Prepared for submission to JHEP De Sitter vs Quintessence in String Theory arxiv:1808.08967v2 [hep-th] 17 Oct 2018 Michele Cicoli, 1,2,3 Senarath de Alwis, 4 Anshuman Maharana, 5 Francesco Muia 3 and Fernando
More informationThe Standard Model and beyond
The Standard Model and beyond In this chapter we overview the structure of the Standard Model (SM) of particle physics, its shortcomings, and different ideas for physics beyond the Standard Model (BSM)
More informationGeometry of particle physics
c 2009 International Press Adv. Theor. Math. Phys. 13 (2009) 947 990 Geometry of particle physics Martijn Wijnholt Max Planck Institute (Albert Einstein Institute), Am Mühlenberg 1, D-14476 Potsdam-Golm,
More informationCandidates for Inflation in Type IIB/F-theory Flux Compactifications
Candidates for Inflation in Type IIB/F-theory Flux Compactifications Irene Valenzuela IFT UAM/CSIC Madrid Geometry and Physics of F-Theory, Munich 2015 Garcia-Etxebarria,Grimm,Valenzuela [hep-th/1412.5537]
More informationBEYOND THE SM (II) Kaustubh Agashe (University of Maryland)
BEYOND THE SM (II) Kaustubh Agashe (University of Maryland) ierarchy problems (from lecture 1) Planck-weak hierarchy problem Flavor (hierarchy) puzzle...extra dimensions can address both... Extra dimensions:
More informationGauge coupling unification without leptoquarks Mikhail Shaposhnikov
Gauge coupling unification without leptoquarks Mikhail Shaposhnikov March 9, 2017 Work with Georgios Karananas, 1703.02964 Heidelberg, March 9, 2017 p. 1 Outline Motivation Gauge coupling unification without
More informationSO(10) SUSY GUTs with family symmetries: the test of FCNCs
SO(10) SUSY GUTs with family symmetries: the test of FCNCs Outline Diego Guadagnoli Technical University Munich The DR Model: an SO(10) SUSY GUT with D 3 family symmetry Top down approach to the MSSM+
More informationSome Issues in F-Theory Geometry
Outline Some Issues in F-Theory Geometry Arthur Hebecker (Heidelberg) based on work with A. Braun, S. Gerigk, H. Triendl 0912.1596 A. Braun, R. Ebert, R. Valandro 0907.2691 as well as two earlier papers
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 informationNovel potentials for string axion inflation
Novel potentials for string axion inflation 1. Introduction Tatsuo Kobayashi. Threshold corrections: Dedekind eta function 3. Quantum corrected period vector 4. Summary Abe, T.K., Otsuka, arxiv:1411.4768
More informationHigh Scale Inflation with Low Scale Susy Breaking
High Scale Inflation with Low Scale Susy Breaking Joseph P. Conlon (DAMTP, Cambridge) Nottingham University, September 2007 High Scale Inflation with Low Scale Susy Breaking p. 1/3 Two paradigms: inflation...
More informationFuzzy extra dimensions and particle physics models
Fuzzy extra dimensions and particle physics models Athanasios Chatzistavrakidis Joint work with H.Steinacker and G.Zoupanos arxiv:1002.2606 [hep-th] Corfu, September 2010 Overview Motivation N = 4 SYM
More informationarxiv: v1 [hep-th] 6 Mar 2014
LMU-ASC 05/14 TUM-HEP 932/14 Geography of Fields in Extra Dimensions: String Theory Lessons for Particle Physics Hans Peter Nilles a and Patrick K.S. Vaudrevange b arxiv:1403.1597v1 [hep-th] 6 Mar 2014
More informationGrand Unification. Strong, weak, electromagnetic unified at Q M X M Z Simple group SU(3) SU(2) U(1) Gravity not included
Pati-Salam, 73; Georgi-Glashow, 74 Grand Unification Strong, weak, electromagnetic unified at Q M X M Z Simple group G M X SU(3) SU() U(1) Gravity not included (perhaps not ambitious enough) α(q ) α 3
More informationPHYSICS BEYOND SM AND LHC. (Corfu 2010)
PHYSICS BEYOND SM AND LHC (Corfu 2010) We all expect physics beyond SM Fantastic success of SM (LEP!) But it has its limits reflected by the following questions: What is the origin of electroweak symmetry
More informationFlux Compactification and SUSY Phenomenology
Flux Compactification and SUSY Phenomenology Komaba07 On occasion of Prof. Yoneya s 60 th birthday Masahiro Yamaguchi Tohoku University Talk Plan Introduction : Flux compactification and KKLT set-up Naturalness
More informationString Phenomenology. Tatsuo Kobayashi
String Phenomenology Tatsuo Kobayashi 1.Introduction. Heterotic models 3. D-brane models 4. Effective theory (gauge/yukawa couplings) 5. Moduli stabilization and SUSY breaking 6. Summary 1. Introduction
More informationHidden Sector Baryogenesis. Jason Kumar (Texas A&M University) w/ Bhaskar Dutta (hep-th/ ) and w/ B.D and Louis Leblond (hepth/ )
Hidden Sector Baryogenesis Jason Kumar (Texas A&M University) w/ Bhaskar Dutta (hep-th/0608188) and w/ B.D and Louis Leblond (hepth/0703278) Basic Issue low-energy interactions seem to preserve baryon
More informationExploring Universal Extra-Dimensions at the LHC
Exploring Universal Extra-Dimensions at the LHC Southampton University & Rutherford Appleton Laboratory 1 Problems to be addressed by the underlying theory The Nature of Electroweak Symmetry Breaking The
More informationThe Matter-Antimatter Asymmetry and New Interactions
The Matter-Antimatter Asymmetry and New Interactions The baryon (matter) asymmetry The Sakharov conditions Possible mechanisms A new very weak interaction Recent Reviews M. Trodden, Electroweak baryogenesis,
More informationHIGGS-GRAVITATIONAL INTERATIONS! IN PARTICLE PHYSICS & COSMOLOGY
HIGGS-GRAVITATIONAL INTERATIONS! IN PARTICLE PHYSICS & COSMOLOGY beyond standard model ZHONG-ZHI XIANYU Tsinghua University June 9, 015 Why Higgs? Why gravity? An argument from equivalence principle Higgs:
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 informationInstantons in string theory via F-theory
Instantons in string theory via F-theory Andrés Collinucci ASC, LMU, Munich Padova, May 12, 2010 arxiv:1002.1894 in collaboration with R. Blumenhagen and B. Jurke Outline 1. Intro: From string theory to
More informationD-brane instantons in Type II orientifolds
D-brane instantons in Type II orientifolds in collaboration with R. Blumenhagen, M. Cvetič, D. Lüst, R. Richter Timo Weigand Department of Physics and Astronomy, University of Pennsylvania Strings 2008
More informationThe effective field theory of axion monodromy
The effective field theory of axion monodromy Albion Lawrence, Brandeis University arxiv:1101.0026 with Nemanja Kaloper (UC Davis) and Lorenzo Sorbo (U Mass Amherst) arxiv:1105.3740 with Sergei Dubovsky
More informationPhysics Beyond the Standard Model at the LHC
Physics Beyond the Standard Model at the LHC G G Ross, Edinburgh 7th February 2007 The Standard Model as an Effective Field Theory Beyond the Standard Model The LHC as a probe of BSM physics The Standard
More informationExotic Dark Matter as Spin-off of Proton Stability. Kaustubh Agashe (University of Maryland)
Exotic Dark Matter as Spin-off of Proton Stability Kaustubh Agashe (University of Maryland) Outline and Summary Warped extra dimensions address Planckweak and flavor hierarchies: new (KK) particles at
More information