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Portoroz 2013: Probing the Standard Model and New Physics at Low and High Energies

15–18 Apr 2013
Portoroz, Slovenia
Europe/Ljubljana timezone

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  1. 41. Recent results from heavy flavour experiments
    Christoph Schwanda (Austrian Academy of Sciences)
    15/04/2013, 09:00
    In this talk we review recent results from the Belle, BaBar and LHCb experiments, relevant to the topic of this workshop. In particular we will examine the experimental situation of the Cabibbo-Kobayashi-Maskawa matrix elements |Vcb| and |Vub| and review new measurements of semileptonic and leptonic B meson decays involving a tau-lepton. Also new results in the Bs sector will be examined. The...
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  2. 31. CP averaged and CP violating observables for B-> K* l+ l- in the full kinematic region
    Prof. Joaquim Matias (Universitat Autonoma Barcelona)
    15/04/2013, 09:35
    We present a complete and comprehensive analysis of the $B\to K^*(\to K\pi) \ell^+\ell^-$ decay, focusing on clean CP-averaged and CP-violating observables both at large and low hadronic recoil. For that purpose we define a complete set of clean CP-asymmetries (P_i^{CP}) related to the clean observables Pi. We present predictions within the Standard Model for all the relevant observables of...
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  3. 49. Invariants and Flavour Aspects of the SM and Beyond
    Gustavo Branco (Instituto Superior Tecnico)
    15/04/2013, 09:57
    We illustrate how weak basis invariants can be a very useful tool to study Flavour and CP Violation in the SM and Beyond.
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  4. 7. Recent progress in semileptonic B decays
    Paolo Gambino (Universita e INFN (IT))
    15/04/2013, 10:19
    I summarize recent progress in the determination of the CKM matrix in semileptonic B decays.
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  5. 13. The anatomy of quark flavour observables in the flavour precision era
    Fulvia De Fazio (INFN - Sezione di Bari)
    15/04/2013, 11:00
    I shall discuss strategies towards the indirect detection of new physics from flavour observables.
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  6. 8. Probing New Physics with B^0_s -> mu+ mu-
    Robert Fleischer (Nikhef and Vrije Universiteit Amsterdam)
    15/04/2013, 11:22
    The rare decay $B_s \to \mu^+\mu^-$ plays a key role for the testing of the Standard Model. It is discussed that the sizable decay width difference $\Delta\Gamma_s$ of the $B_s$-meson system affects this channel. As a consequence, its calculated Standard Model branching ratio has to be upscaled by about 10% to $(3.56\pm0.18)\times 10^{-9}$. This prediction is the reference value for the...
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  7. 44. B_q -> mu+ mu- and electroweak interactions
    Martin Gorbahn (Liverpool University)
    15/04/2013, 11:44
    The B_q to mu^+ mu^- theory prediction is sensitive to the renormalisation scheme used for sin_W. The scheme ambiguity is the source of the dominant theory uncertainty in the standard model. Additionally the renormalization is rather involved in new physics models where M_Z cos_W = M_W does not hold at tree level. In this talk I will present the results of a two-loop electroweak...
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  8. 15. CP phases from non-abelian discrete symmetries
    Claudia Hagedorn (University of Padua and SISSA)
    15/04/2013, 12:06
    I will discuss possibilities to predict CP phases in the lepton sector with the help of non-abelian discrete flavour symmetries (and CP symmetries). I will show that the breaking of a non-abelian discrete flavour group to residual symmetries in the charged lepton and neutrino sectors not only allows for predictions of the mixing angles, but also of the Dirac phase. Furthermore, I will present...
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  9. 62. New physics from B -> D* tau nu
    Ivan Nisandzic (J. Stefan Institute)
    15/04/2013, 12:28
    Semi-leptonic B decays are important test of the Standard Model (SM) and present the possibility to explore the eects of physics Beyond Standard Model (BSM). Decays involving tau leptons in the nal state are interesting due to the tau mass eects which allow to probe the contributions to the decay rate which are not present in the decay containing light lepton in nal state. Recently,...
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  10. 6. SUSY after the LHC
    Giovanni Villadoro (ICTP)
    15/04/2013, 14:30
    I will present the implication of the latest LHC results for natural and unnatural SUSY models.
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  11. 4. Light color octet scalars in the minimal SO(10) grand unification
    Michal Malinsky (IPNP, Charles University in Prague)
    15/04/2013, 14:52
    We analyze the correlation between the present and foreseen limits on matter instability and the upper bounds on the mass of an intermediate-to-EW-scale color octet scalar in the minimal non-supersymmetric SO(10) grand unification. A dedicated two-loop analysis reveals a tight correlation between the octet mass and the unification scale which either requires the octet to be within the reach of...
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  12. 5. Towards gauge coupling unification in minimal SU(5) at three-loop accuracy
    Dr Luca Di Luzio (Karlsruhe Institute of Technology)
    15/04/2013, 15:14
    It was shown recently that the original SU(5) theory of Georgi and Glashow, augmented with an adjoint fermionic multiplet, is compatible both with neutrino masses and gauge coupling unification. In particular, the latter predicts the existence of light O(TeV) electroweak triplet states. We compute the correlation between the triplet masses and the unification scale at the NNLO level. Such an...
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  13. 33. Charged LFV in a low-scale seesaw mSUGRA model
    Prof. Amon Ilakovac (Faculty of Science, University of Zagreb)
    15/04/2013, 15:36
    Charged lepton flavour violaton (LFV) is studied in the low-scale see saw models of minimal supergravity and with large Yukawa couplings realized through approximate lepton number symmetries. The models have two sources of LFV, one originating from the soft supersymmetry-breaking sector, and the other entirely supersymmetric one originating from the supersymmetric Yukawa sector. These sources...
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  14. 48. Constraining two Higgs doublet Models
    Margarida Nesbitt Rebelo (Instituto Superior Tecnico (IST))
    15/04/2013, 15:58
    Suppression of HFCNC: NFC, Aligned, MFV Comments on present situation taking into account recent LHC data and data from B-factories. Weak Basis invariants as a tool to study the flavour sector of 2HDM.
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  15. 20. Leptoquark mass limit in SU(5)
    Prof. Ilja Doršner (University of Sarajevo)
    15/04/2013, 16:35
    I address the issue of model dependence of partial proton decays due to exchange of a single scalar leptoquark within a minimal viable SU(5) framework. The minimal setup predicts a flavor part of the proton decay widths for channels with anti-neutrinos in the final state to depend solely on the known masses and mixing parameters of the quark sector and one extra phase. I accordingly establish...
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  16. 59. On the structure of the charged lepton mass matrix
    Andrea Romanino (SISSA)
    15/04/2013, 16:57
    TBA
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  17. 23. A natural framework for baryonic R-parity violation in GUT
    Marco Nardecchia
    15/04/2013, 17:19
    We investigate the possibility of obtaining large (up to O(1)) R-parity- and baryon-number- violating couplings in supersymmetric GUT. Since quarks and leptons are embedded into the same grand-unified multiplets, the natural expectation is that baryonic R-parity violation is always associated with similar-size lepton-number-violating couplings. Being the simultaneous presence of both types of...
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  18. 47. Gauge Mediation beyond MFV
    Robert Ziegler (TUM)
    15/04/2013, 17:41
    I will discuss a modification of Gauge Mediation in which the messenger sector couples directly to the MSSM. These couplings are controlled by the same dynamics that explain the flavor hierarchies, and therefore are parametrically as small as the Yukawas. This setup gives rise to an interesting SUSY spectrum that is calculable in terms of a single new parameter. Due to large A-terms, the model...
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  19. 11. Three-generation baryon and lepton number violation at the LHC
    Gauthier Durieux (CP3 - UCLouvain)
    15/04/2013, 18:03
    While stringent constraints have been obtained at low energies, systematic and direct tests of the baryon and lepton number conservations have not been carried out at the current energy frontier. We observe that the flavour symmetries of the Standard Model gauge sector, broken as they are in the Standard Model Yukawa one, naturally suppress baryon and lepton number violation at low energy and,...
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  20. 53. Review of SM Higgs and top results at LHC and Tevatron
    Marina Cobal (Universita degli Studi di Udine (IT))
    16/04/2013, 09:00
    A review talk is given on the status of SM Higgs physics and top properties at ATLAS, CMS and Tevatron
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  21. 3. Quark and Lepton Flavor Symmetry and the 126 GeV Higgs Boson
    Prof. Ernest Ma (University of California, Riverside)
    16/04/2013, 09:35
    A successful flavor symmetry for quarks and leptons should have a good explanation of why the observed 126 GeV Higgs boson is very close to that of the standard model. Such a model based on the discrete symmetry S(3) was already proposed in 2004, but this issue was not studied. To support the S(3) symmetry, this model has three Higgs doublets, but the lightest one is naturally almost the...
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  22. 12. Characterizing new physics effects in gauge boson pair production
    Dr Oscar Cata (LMU Munich)
    16/04/2013, 09:57
    ...
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  23. 35. Combining Z' and W' searches at the LHC
    Manuel Perez-Victoria (University of Granada)
    16/04/2013, 10:40
    I will discuss an effective Lagrangian description of new vector bosons giving resonant leptonic signals at the LHC. Gauge invariance imposes relations on the couplings and masses of charged and neutral vector bosons. I will show that a combined analysis of di-lepton and lepton-plus-missing-energy data takes advantage of such relations and improves the existing limits.
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  24. 38. Higgs Production in association with a hadronic jet at NNLO in QCD
    Radja Boughezal (Argonne National Laboratory)
    16/04/2013, 11:02
    In this talk, we will present new results for the differential cross-section of Higgs boson production in gluon fusion in association with a hadronic jet at next-to-next-to-leading order (NNLO) in perturbative QCD. This result is urgently needed in order to reduce the theoretical uncertainties hindering a precise extraction of the Higgs properties at the LHC. Currently, the theoretical...
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  25. 22. Constraints from Rare Higgs Decays on the TeV-scale Neutrino Mass Model
    Prof. Ivica Picek (University of Zagreb)
    16/04/2013, 11:24
    The loop-mediated higgs decays constrain the model parameter space of the neutrino mass mechanism based on the fermionic quintuplet in conjunction with the scalar quadruplet. The most significant increase to the higgs to diphoton decay width comes from a doubly charged scalar component, which should be the lightest component in the scalar quadruplet. There is an anti-correlation to the h...
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  26. 70. Future of composite dynamics
    francesco Sannino (CP3-Origins)
    16/04/2013, 11:46
    I will discuss the impacts of the LHC findings on composite dynamics at the electroweak scale. I will show that current results are compatible with dynamical electroweak symmetry breaking once the electroweak radiative corrections are taken properly into account. I will then show some of the most relevant signatures for the LHC helpful to single out composite dynamics.
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  27. 61. Constraining new physics with the current Higgs data
    Admir Greljo (Institute Jozef Stefan)
    16/04/2013, 12:08
    Based on two model studies I will discuss how the recent Higgs measurements can be used to constrain new physics effects. The first example concerns colored scalars inherent to theories of matter unification. Using existing Higgs data, nontrivial constraints on scalars with masses of a few hundreds of GeV can be obtained. The second study concerns vector-like fermions mixing with SM quarks....
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  28. 27. On Bs to µµ within well-motivated theory frameworks, including the SM
    Diego Guadagnoli (LAPTh Annecy)
    16/04/2013, 14:30
    The Bs to µµ decay is one of the milestones of the flavor program at the LHC. I will touch on certain aspects of the connection between the experimental and the theoretical observable. I will then discuss the impact of this observable on SM extensions, focusing on minimally model-dependent frameworks such as MFV or partial compositeness. It turns out that its constraining power is, depending...
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  29. 29. Rare B decays at the NNLO in QCD
    Mikolaj Krzysztof Misiak (University of Warsaw (PL))
    16/04/2013, 14:52
    Recent contributions to the evaluation of B -> Xs gamma and Bs -> mumu branching ratios at the next-to-next-to-leading order in QCD will be described. They include matching calculations at the electroweak scale as well as matrix element determination at the low energy scale.
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  30. 36. Constraints on Wilson Coefficients from radiative B decays in a frequentist approach
    Sébastien Descotes-Genon (LPT)
    16/04/2013, 15:14
    I discuss the constraints on the Wilson Coefficients of the effective Hamiltonian from B radiative decays within the frequentist approach developed by the CKMfitter group. A particular attention will be paid to the treatment of hadronic inputs and the sensitivity of observables (currently measured or planned to be) on this issue.
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  31. 42. Hadronic effects in the exclusive b -> s transitions
    Alexander Khodjamirian
    16/04/2013, 15:36
    The search for new physics in the flavour-changing neutral-current $b\to s \ell^+\ell^-$ transitions demands an accurate knowledge of the relevant hadronic parameters calculated in QCD. For the exclusive semileptonic $B$ decays, in addition to the form factors, also the relevant nonlocal hadronic matrix elements have to be estimated. I will discuss the hadronic effects in B\to K...
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  32. 65. Isospin in B->K^(*)ll in and beyond the SM
    Roman Zwicky (edinburgh university)
    16/04/2013, 15:58
    I will discuss the isospin asymmetry in and beyond the SM at low q2 (large recoil).
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  33. 69. Flavour changing matrix elements for physics beyond the SM
    Alessio Maiezza
    16/04/2013, 16:20
    Flavour changing neutral current and CP violating processes provide the testing ground for physics beyond the SM. The evaluation of the relevant hadronic matrix elements is crucial for the precision of the theoretical predictions. While waiting for precise lattice calculations we revisit the dipole and current-current K->pipi hadronic matrix elements in the framework of the phenomenological...
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  34. 46. Reconciliation of Tevatron A_fb and LHC A_C with s-channel and t-channel NP
    Jure Drobnak (TUM, IJS)
    16/04/2013, 16:55
    Since the measured value of A_C at LHC seems to be compatible with the SM predicted value, many considered explanations of the anomalous A_FB measured at Tevatron fail to appropriately accommodate the experimental A_C value. In the talk I will present two distinct ways of reconciling the two measurements using new physics in t-tbar production. One includes an axi-gluon exchange in the...
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  35. 0. The Top-Quark Charge Asymmetry with a Jet Handle
    Susanne Westhoff (University of Pittsburgh, PITT-PACC)
    16/04/2013, 17:17
    Top-quark physics provides us with a portal to potential physics beyond the standard model. To date, the only evidence of an anomaly in top-quark physics is the large charge asymmetry observed at the Tevatron. Shedding light on this anomaly by measuring a charge asymmetry at the LHC, however, is a difficult endeavor. I will discuss the prospects to observe a charge asymmetry in top-antitop...
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  36. 26. t tbar charge asymmetry, family and friends
    Juan Antonio Aguilar Saavedra (University of Granada, University of Coimbra, LIP and IFCA)
    16/04/2013, 17:39
    We present the current status of the Tevatron charge asymmetry and its sister asymmetry at the LHC. The relation between both is elucidated, using as framework the collider-independent asymmetries they originate from. Other related observables, such as the t tbar differential distribution and top polarisation, are also discussed.
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  37. 14. The charming stop
    Monika Blanke
    16/04/2013, 18:01
    While the presence of top partners below the TeV scale is predicted by naturalness, the search at ATLAS and CMS for these states has so far been unsuccessful. Focussing on supersymmetry, we show that a large mixing between the right-handed charm and top squarks (i) is allowed by low-energy flavour constraints; (ii) reduces the experimental bound on the stop mass; (iii) has a mild, but...
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  38. 34. Status of Three-Neutrino Mixing and Beyond
    Dr Carlo Giunti (INFN)
    17/04/2013, 09:00
    In the first part I briefly review the phenomenology of three neutrino mixing and I describe the status of neutrino oscillation experiments and of the experiments measuring neutrino masses in the framework of three neutrino mixing. In the second part I review the experimental indications in favor of short-baseline neutrino oscillations and I discuss their interpretation in the...
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  39. 1. A model for light sterile neutrinos (TBC)
    Dr Stéphane Lavignac (IPhT Saclay (CEA, France))
    17/04/2013, 09:35
    Some experimental anomalies suggest the possible existence of light sterile neutrino(s) mixing with the active ones. In this talk, we discuss a scenario in which the sterile neutrino is the fermionic partner of the pseudo-Goldstone boson associated with the spontaneous breaking of an approximate global symmetry.
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  40. 9. Bilinear R-parity violating sneutrino heavy decay modes
    Diego Aristizabal (Universite de Liege)
    17/04/2013, 09:57
    In bilinear R-parity violation (BRpV), in which the superpotential includes a bilinear term between the lepton doublet and the up-type Higgs superfields, a sneutrino LSP can decay into pairs of heavy standard model states: W's, Z's, tops or Higgs bosons. These finals states can dominate over the traditionally considered bottom pair final state, yielding unique and novel supersymmetric signals...
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  41. 39. From Majorana to Dirac in the Minimal Left-Right Model
    Miha Nemevsek (ICTP)
    17/04/2013, 10:19
    The discovery of the Higgs boson allows us to test the origin of masses by observing the Higgs decay rates which are unambiguously predicted in the Standard model. In the case of neutrinos, the couplings to the SM Higgs cannot always be determined, as is the case in the conventional see-saw scenario with singlets. We show that in the left-right symmetric model the symmetry of the theory...
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  42. 2. Selected news in the astroparticle field: DM and cosmic neutrinos
    Marco Cirelli (IPhT Saclay,CNRS & CEA)
    17/04/2013, 11:00
    I will briefly discuss some recent results and anomalies in the field of Cosmic Neutrinos, Dark Matter Direct Detection, Dark Matter Indirect Detection and (possibly) High Energy Cosmic Rays, with an emphasis on the implications on particle physics model building.
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  43. 50. Prospects of two-loop neutrino mass model after theta_13 measurements and LHC data
    Julio
    17/04/2013, 11:35
    We analyze the two-loop neutrino mass model with singly- and doubly-charged scalars. By examining the behavior of loop integral and constraint on trilinear coupling, we are able to find the extremum condition for neutrino mass parameters. By utilizing the LFV constraints and recently measured \theta_{13}, we can determine the lowest masses of the scalars. We also discuss possible...
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  44. 43. Closing in on mass-degenerate dark matter scenarios
    Alejandro Ibarra
    17/04/2013, 11:57
    We consider a minimal framework which features a Majorana fermion as the dark matter particle and a scalar that mediates the coupling to light fermions. In this scenario the annihilation rate into two fermions and one gauge boson as well as the interaction rate with nuclei can be significantly enhanced while avoiding the strong limits on new physics from collider experiments. We discuss...
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  45. 28. Minimal lepton flavor violating realizations of minimal seesaw models
    Audrey Degée (University of Liège)
    17/04/2013, 12:19
    We study the implications of the global $U(1)_R$ symmetry present in minimal lepton flavor violating implementations of the seesaw mechanism for neutrino masses. In the context of minimal type I seesaw scenarios with a slightly broken $U(1)_R$, we show that, depending on the $R$-charge assignments, two classes of generic models can be identified. Models where the right-handed neutrino masses...
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  46. 24. Correlations among Dark Matter signals
    Dr Andrea De Simone (CERN & SISSA)
    17/04/2013, 14:30
    It has been recently pointed out the great relevance of including electroweak radiation effects for indirect searches of Dark Matter. One inevitable consequence of including electroweak corrections is inducing correlations among the predicted particle fluxes targeted by the various experiments. In this talk I will focus on the correlations between different data from a single experiment:...
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  47. 25. Testing light neutralino dark matter with multi-tau signals at the LHC
    Lorenzo Calibbi (ULB, Brussels)
    17/04/2013, 14:52
    Light neutralino dark matter in the MSSM is only consistent with WMAP observations in a corner of the parameter space with peculiar features, which imply that other SUSY particles must be light, in particular the lightest stau and higgsino-like neutralinos and charginos. These states can be copiously produced at the LHC via electro-weak Drell-Yan and lead to peculiar multi-tau and missing E_T...
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  48. 60. Charm-Top Flavour Physics at the LHC(b)
    Paride Paradisi (CERN)
    17/04/2013, 15:14
    We summarize the prospect of new physics searches through charm-top flavour physics in the light of the latest results at the LHC(b).
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  49. 55. Composite t' triplets from QCD-like dynamics and t t-bar asymmetries
    Joachim Brod (University of Cincinnati)
    17/04/2013, 15:36
    The CDF and D0 experiments at Tevatron measure a top-quark forward-backward asymmetry significantly larger than the standard-model prediction. We construct a model which involves new strong interactions at the electroweak scale and can explain the measured asymmetry. Our model possesses a flavor symmetry which allows to evade flavor and collider constraints, while it still permits...
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  50. 40. Flavour physics in composite Higgs models
    Dr David Straub (Johannes Gutenberg-Universität Mainz)
    17/04/2013, 16:20
    Models with partial compositeness, like composite Higgs models or models with a warped extra dimension, generically predict tree-level corrections to electroweak precision observables and flavour-changing neutral currents. I will discuss flavour constraints on this class of models, considering several choices for the electroweak representations and comparing flavour-symmetric models to...
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  51. 63. Impact of the Higgs discovery on two models of new physics
    Ulrich Nierste (Karlsruhe Institute of Technology (KIT))
    17/04/2013, 16:42
    A combined fit of electroweak precision data and data on Higgs decays lead to an exclusion of the Standard Model with a sequential fourth generation at the level of 5 standard deviations. In my talk I discuss the methodology of the corresponding statistical analysis, which involved so-called non-tested hypotheses. Then I discuss a supersymmetric GUT model, in which the atmospheric...
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  52. 52. The MSSM in the decoupling limit
    Andreas Crivellin (University Bern)
    17/04/2013, 17:04
    In the first part of the talk I discuss the matching of the MSSM on the two-Higgs-doublet model with focus on the Yukawa interactions. The determination of the Yukawa couplings of the MSSM superpotential is explained and the recently computed NLO corrections to quark-quark-Higgs couplings are presented. The second part of the talk reviews the flavour phenomenology of the 2HDM with generic...
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  53. 51. Can minimal SUSY SU(5) scenario be made realistic?
    Mr Timon Mede (J. Stefan Institute, Ljubljana)
    17/04/2013, 17:26
    Can minimal renormalizable supersymmetric SU(5) GUT model be reconciled (up to neutrino masses) with all the phenomenological constraints like the proton decay bounds, the correct mass relations among light fermions, the recently measured Higgs mass and the LHC bounds on the sparticle spectrum, while remaining perturbative? All these experimental results confine the structure of the allowed...
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  54. 16. b-> s transitions and Lattice QCD
    Dr Federico Mescia (Universitat de Barcelona)
    18/04/2013, 09:00
    This year, LHC provided a very stringent bound on Br(Bs->mu+mu-), bringing it closer to the value predicted by the Standard Model (SM). Bs->mu+mu- was believed to be the golden mode at LHCb to find SUSY because a large enhancement was expected in the regime of moderate and large values of tanb. Other scenarios are still possible and a correlation with other decay channels is needed. We show...
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  55. 17. Violation of lepton universality: impact of new physics for R_K and R_pi
    Ana M. Teixeira (LPC Clermont)
    18/04/2013, 09:22
    In view of the expected experimental precision, light meson leptonic decays have a unique potential to probe deviations from the Standard Model estimates on lepton flavour universality, and thus signal the presence of New Physics. We briefly review supersymmetric contributions to the ratio $R_{K}$, which are in general unable to saturate the current experimental bounds due to a strong...
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  56. 18. B->Vll at small dilepton invariant mass, power corrections, and new physics
    Sebastian Jaeger (University of Sussex (GB))
    18/04/2013, 09:44
    The angular distribution in the rare decay B->V l l provides powerful probes of new physics. I present a new treatment of long-distance effects that is more conservative and robust than the prevailing procedure based on QCD factorization alone; nevertheless we find that a certain helicity hierarchy survives and implies that two observables constructed from the angular distribution remain...
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  57. 19. Constraining new physics with charmless B --> M_1 M_2 decays in QCD factorisation
    Christoph Bobeth (Technical University Munich)
    18/04/2013, 10:06
    CP asymmetries and branching ratios in QCD and QED penguin dominated charmless B --> M_1 M_2 decays can provide important constrains on non-standard effects. We use current experimental data and discuss the impact of future Belle II measurements of the systems B_(d,s) --> (K pi,K eta', K K, pi pi) and B --> (K rho, K phi, K omega, pi K^*) to explore new physics scenarios mediated by Z-penguin...
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  58. 32. The electric dipole moment of the neutron as a probe of new physics
    Thomas Mannel (Siegen University)
    18/04/2013, 10:28
    I will discuss the calculation of the electric dipole moment of the neutron in the standard model, identifying contributions which have not been discussed yet. Depending on the size of the unknown hadronic matrix elements these contributions could significantly enlarge the electric dipole moment compared to the previous estimates. The impact on the search for effects beyond the standard model...
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  59. 45. Implications of Higgs discovery and other recent data for SUSY
    Leszek Roszkowski (NCBJ (Warsaw))
    18/04/2013, 11:05
    Both the ATLAS and the CMS experiments have discovered a Higgs boson with mass ~126 GeV while setting new stringent lower limits on superpartner masses. The LHCb collaboration has for the first time measured BR(B_s -> mu+ mu-). I will present some implications of these results for supersymmetry and discuss ensuing prospects for SUSY searches at the LHC and in dark matter experiments.
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  60. 54. General Composite Higgs Models
    Marco Serone (SISSA)
    18/04/2013, 11:27
    We construct pseudo-Goldstone composite Higgs models that are not necessarily of moose-type and characterize the main properties these models should have in order to give rise to a Higgs mass at around 125 GeV. We assume the existence of relatively light and weakly coupled spin 1 and 1/2 resonances. In absence of a symmetry principle, we introduce the Minimal Higgs Potential (MHP) hypothesis:...
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  61. 56. COMPOSITE TWO HIGGS DOUBLET MODELS
    Carlos Savoy (CNRS)
    18/04/2013, 11:49
    Composite two Higgs doublet models, where the Higgs fields arise as composite pseudo Nambu-Goldstone modes from the breaking of global symmetries in a strong interacting sector, are described with emphasis on the crucial issues of anomalous contributions to the T parameter and to Flavor Changing Neutral Currents. The non linear Lagrangians of several models are explicitly derived and the...
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  62. 30. The flavor of Higgs
    Yosef Nir (Weizmann Institute of Science (IL))
    18/04/2013, 12:11
    Measurements of the Yukawa couplings of the recently discovered boson $h$ to fermion pairs will provide a new arena for studying flavor physics. We analyze the lessons that can be learned by measuring the $h$ decay rates into the charged lepton pairs, $\tau^+\tau^-$, $\mu^+\mu^-$ and $\tau^\pm\mu^\mp$. We demonstrate how this set of measurements can distinguish in principle between various...
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