Large |Vub|: a challenge for the Minimal Flavour Violating MSSM

Altmannshofer, Wolfgang; Buras, Andrzej J.; Guadagnoli, Diego; Wick, Michael

doi:10.1088/1126-6708/2007/12/096

Cited by 16 publications

(35 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We stress that if tan β 1 (see Sect. 1.2.3.4) and/or if μ is large enough [42], the relevant operators thus obtained go beyond the restricted basis of the CMFV scenario [16]. The typical effective scale suppressing these operators (assuming an overall coefficient 1/Λ 2 ) is…”

Section: The Mfv Hypothesis In the Mssmmentioning

confidence: 95%

B, D and K decays

et al. 2008

View full text Add to dashboard Cite

With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator facilities. While direct detection of new particles will be the main avenue to establish the presence of NP at the LHC, indirect searches will provide precious complementary information, since most probably it will not be possible to measure the full spectrum of new particles and their couplings through direct production. In particular, precision measurements and computations in the realm of flavor physics are expected to play a key role in constraining the unknown parameters of the Lagrangian of any NP model emerging from direct searches at the LHC.The aim of Working Group 2 was twofold: on the one hand, to provide a coherent up-to-date picture of the status of flavor physics before the start of the LHC; on the other hand, to initiate activities on the path towards integrating information on NP from high-p T and flavor data.This report is organized as follows: in Sect. 1, we give an overview of NP models, focusing on a few examples that have been discussed in some detail during the workshop, with a short description of the available computational tools for flavor observables in NP models. Section 2 contains a concise discussion of the main theoretical problem in flavor physics: the evaluation of the relevant hadronic matrix elements for weak decays. Section 3 contains a detailed discussion of NP effects in a set of flavor observables that we identified as "benchmark channels" for NP searches. The experimental prospects for flavor physics at future facilities are discussed in Sect. 4. Finally, Sect. 5 contains some assessEur. Phys. J. C (2008) 57: 309-492 311 ments on the work done at the workshop and the prospects for future developments.

show abstract

Section: The Mfv Hypothesis In the Mssmmentioning

confidence: 95%

B, D and K decays

et al. 2008

View full text Add to dashboard Cite

show abstract

“…In this note I would like to report on the results of various analyses of physics beyond the SM performed by my young and strong collaborators and myself at the Technical University Munich in 2008 [1,2,3,4,5,6,7,8,9].…”

Section: Overturementioning

confidence: 99%

“…In this context an interesting alternative is the flavour blind MSSM (FBMSSM) [22,23,24,25,4] in which CKM remains to be the only source of flavour violation but new CP-violating and flavour conserving phases are present in the soft sector. This new physics scenario is characterized by a number of new parameters that is much smaller than encountered in a general MSSM (GMSSM) and RS models discussed below.…”

Section: Low Energy Probes Of Cp Violation In a Flavour Blind Mssmmentioning

confidence: 99%

“…The main actors in the analysis of the FBMSSM in [4] are the CP asymmetry S φKS that experimentally is found below its SM value, electric dipole moments of neutron and electron, the direct CP asymmetry A CP (b → sγ) and again ε K .…”

Section: Low Energy Probes Of Cp Violation In a Flavour Blind Mssmmentioning

confidence: 99%

“…There are of course many other known reasons for going beyond the SM and expecting new physics at scales probed by the LHC but I will not repeat them here. While a large fraction of particle physicists bets that this new physics will be supersymmetry, the turbulences on stock markets in this decade teach us that it is wise to have many different shares.In this note I would like to report on the results of various analyses of physics beyond the SM performed by my young and strong collaborators and myself at the Technical University Munich in 2008 [1,2,3,4,5,6,7,8,9].In view of space limitations this presentation will consist basically of a list of messages that summarizes the main results of our papers on new physics, in particular supersymmetry, the Littlest Higgs model with T-parity (LHT) and the Randall-Sundrum (RS) scenario with all particles except the Higgs propagating in the bulk.All our papers deal with flavour violating processes, in particular CP-violating ones. While in these papers we have hopefully cited properly all relevant papers, the list of references presented here is incomplete and I apologize for it.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Messages on Flavour Physics Beyond the Standard Model

Buras

2008

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

I present a brief summary of the main results on flavour physics beyond the Standard Model that have been obtained in 2008 by my collaborators and myself at the TUM. In particular I list main messages coming from our analyses of flavour and CP-violating processes in Supersymmetry, the Littlest Higgs model with T-Parity and a warped extra dimension model with custodial protection for flavour violating Z boson couplings. OvertureElementary particle physicists are eagerly awaiting the first messages from the LHC which, if we are lucky, will signal not only the discovery of the Higgs but also the existence of a definitive new physics beyond the Standard Model (SM) of elementary interactions of quarks and leptons.We need more than the SM in order to understand several observed facts, in particular the huge hierarchy between the Planck scale and the electroweak scale and the hierarchies in quark and lepton mass spectra and in their flavour violating interactions summarized by the CKM and PMNS mixing matrices, respectively. There are of course many other known reasons for going beyond the SM and expecting new physics at scales probed by the LHC but I will not repeat them here. While a large fraction of particle physicists bets that this new physics will be supersymmetry, the turbulences on stock markets in this decade teach us that it is wise to have many different shares.In this note I would like to report on the results of various analyses of physics beyond the SM performed by my young and strong collaborators and myself at the Technical University Munich in 2008 [1,2,3,4,5,6,7,8,9].In view of space limitations this presentation will consist basically of a list of messages that summarizes the main results of our papers on new physics, in particular supersymmetry, the Littlest Higgs model with T-parity (LHT) and the Randall-Sundrum (RS) scenario with all particles except the Higgs propagating in the bulk.All our papers deal with flavour violating processes, in particular CP-violating ones. While in these papers we have hopefully cited properly all relevant papers, the list of references presented here is incomplete and I apologize for it. ε K -An Old Star Strikes BackOne of the many successes of the SM is particularly striking. The SM is consistent within theoretical and parametric uncertainties simultaneously with |ε K | ≈ 2.2 · 10 −3 that measures tiny This situation may change soon due to the following recent developments:• Improved lattice calculations ofB K . In particular a recent simulation with dynamical fermions results inB K = 0.72 ± 0.04[10] that should be improved in the coming months,• Inclusion of additional corrections to ε K [1] that were usually neglected in the literature in view of the 20% error onB K . As this parameter is now much better known it is mandatory to include them. Effectively 1

show abstract

Squark and gaugino hadroproduction and decays in non-minimal flavour violating supersymmetry

et al. 2007

View full text Add to dashboard Cite

We present an extensive analysis of squark and gaugino hadroproduction and decays in non-minimal flavour violating supersymmetry. We employ the so-called super-CKM basis to define the possible misalignment of quark and squark rotations, and we use generalized (possibly complex) charges to define the mutual couplings of (s)quarks and gauge bosons/gauginos. The cross sections for all squark-(anti-)squark/gaugino pair and squark-gaugino associated production processes as well as their decay widths are then given in compact analytic form. For four different constrained supersymmetry breaking models with non-minimal flavour violation in the second/third generation squark sector only, we establish the parameter space regions allowed/favoured by low-energy, electroweak precision, and cosmological constraints and display the chirality and flavour decomposition of all up- and down-type squark mass eigenstates. Finally, we compute numerically the dependence of a representative sample of production cross sections at the LHC on the off-diagonal mass matrix elements in the experimentally allowed/favoured ranges

show abstract

Large |V_ub|: a challenge for the Minimal Flavour Violating MSSM

Cited by 16 publications

References 39 publications

B, D and K decays

B, D and K decays

Messages on Flavour Physics Beyond the Standard Model

Squark and gaugino hadroproduction and decays in non-minimal flavour violating supersymmetry

Contact Info

Product

Resources

About