R -parity-violating SUSY and CP violation in B → φ K S

We analyse the CP asymmetry of the B → φK S process in general supersymmetric models. In the framework of the mass insertion approximation, we derive model independent limits for the mixing CP asymmetry. We show that chromomagnetic type of operator may play an important role in accounting for the deviation of the mixing CP asymmetry between B → φK S and B → J/ψK S processes observed by Belle and BaBar experiments. A possible correlation between the direct and mixing CP asymmetry is also discussed. Finally, we apply our result in minimal supergravity model and supersymmetric models with non-universal soft terms.

“…Since we used the full formulae in Eqs. (18) and (19) to create this figure, different θ SU SY does not give precisely rescaled ellipses. Nevertheless we can see the qualitative feature.…”

Section: Effective Hamiltonian For ∆B = 1 Transitionsmentioning

confidence: 99%

“…Several works in this respect are in the literature with detail discussion on the possible implications of this result [10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

On supersymmetric contributions to theCPasymmetry of theB→φKSprocess

Khalil

Kou

2003

“…Recent results on the CP asymmetry in B d → φK S by Belle and BaBar collaborations indicate a 2.7σ deviation from the SM prediction [10]. This anomaly may be attributed to new physics, SUSY with R parity [11,12], SUSY without R parity [13], or other models [14]. Moreover, the CP asymmetries in the b → sγ process [15,16] have been extensively studied in several models, and they would exhibit substantial deviation from the SM in some models [17].…”

Section: Introductionmentioning

confidence: 99%

Exploring flavor structure of supersymmetry breaking from rareBdecays and the unitarity triangle

Goto

Okada²,

Shimizu

et al. 2004

We study effects of supersymmetric particles in various rare B decay processes as well as in the unitarity triangle analysis. We consider three different supersymmetric models, the minimal supergravity, SU(5) SUSY GUT with right-handed neutrinos, and the minimal supersymmetric standard model with U(2) flavor symmetry. In the SU(5) SUSY GUT with right-handed neutrinos, we consider two cases of the mass matrix of the right-handed neutrinos. We calculate direct and mixing-induced CP asymmetries in the b → sγ decay and CP asymmetry in B d → φK S as well as the B s -B s mixing amplitude for the unitarity triangle analysis in these models. We show that large deviations are possible for the SU(5) SUSY GUT and the U(2) model. The patterns and correlations of deviations from the standard model will be useful to discriminate the different SUSY models in future B experiments.

“…(12) are the factorized hadronic matrix elements [30]. a i 's and b i 's contain the Wilson coefficients.…”

Section: Cp Asymmetry Of B → φK Decaysmentioning

confidence: 99%

“…The discrepancy between S φK S and S J/ΨK S has been discussed in some recent works [10,11,12,13,14,15,16,17,18,19,20,21,22] in the framework of SUSY models, especially in the minimal supersymmetric standard model (MSSM) with the mass insertion method [23].…”

Section: Introductionmentioning

confidence: 99%

B0→φKSin supergravity models withCPviolations

Arnowitt

Dutta

2003

We examine the B → φK decays within the framework of SUGRA models making use of the improved QCD factorization method of Beneke et al. which allows calculations of non-factorizable contributions. All other experimental constraints (B → X s γ, neutron and electron electric dipole moments, dark matter constraints, etc.) are imposed. We calculate the CP violating parameters S φK S , C φK S and A φK ∓ as well as the branching ratios (BR) of B 0 and B ± , Br[B → φK]. We find for the Standard Model(SM) and mSUGRA it is not possible to account for the observed 2.7σ deviation between S φK S and S J/ΨK S . In general the BRs are also in 3σ disagreement with experiment, except in the parameter region where the weak annihilation terms dominate the decay (and hence where the theory is least reliable). Thus if future data confirm the current numbers, this would represent the first significant breakdown of both the SM and mSUGRA. We show then that adding a SUGRA non-universal A soft breaking left-right term mixing the second and third generations in either the down or up quark sector, all data can be accommodated for a wide range of parameters. The full 6x6 quark mass matrices are used and the SUSY contributions calculated without approximation.