scholarly journals The Effect of Fourth Generation Standard Model onthe CP Asymmetry in Bs → ϕℓ+ℓ- Decay

2017 ◽  
Vol 4 (ICBS Conference) ◽  
pp. 624-636
Author(s):  
H Mehranfar
Keyword(s):  
Standard Model ◽  
Fourth Generation ◽  
Cp Asymmetry

scholarly journals COMPLETE STUDY OF THE SEMILEPTONIC B TO $K_2^*(1430)$ DECAYS IN THE STANDARD MODEL WITH FOURTH GENERATION

2012 ◽  
Vol 27 (25) ◽  
pp. 1250149 ◽  
Author(s):  
MUHAMMAD JUNAID ◽  
MUHAMMAD JAMIL ASLAM ◽  
ISHTIAQ AHMED
Keyword(s):  
Standard Model ◽  
Form Factors ◽  
Experimental Information ◽  
Fourth Generation ◽  
Final State ◽  
Cp Asymmetry ◽  
The Standard Model ◽  
Complete Study ◽  
Lepton Polarization ◽  
State Formula

The [Formula: see text] decays are analyzed in the standard model (SM) extended to fourth generation of quarks (SM4). The decay rate, forward–backward asymmetry, lepton polarization asymmetries, the helicity fractions of the final state [Formula: see text] meson and CP asymmetry are discussed using the form factors calculated in the light-cone sum rules (LCSR) approach. We utilized the constraints on different fourth generation parameters obtained from the experimental information on K, B and D decays and from their recent searches at the ATLAS and CMS experiments to explore their impact on the [Formula: see text] decays. We find that the values of above mentioned physical observables deviate significantly from their minimal SM predications. In the present study, we will also perform the analysis of CP asymmetry in [Formula: see text] decays within SM4, which is one of the most interesting observable in the study of SM4.

scholarly journals CP asymmetry for radiative B-meson decay in the supersymmetric standard model

1999 ◽  
Vol 554 (1-2) ◽  
pp. 50-66 ◽  
Author(s):  
Mayumi Aoki ◽  
Gi-Chol Cho ◽  
Noriyuki Oshimo
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
B Meson ◽  
Meson Decay ◽  
Cp Asymmetry ◽  
B Meson Decay

IS THERE ANY PUZZLE OF NEW PHYSICS IN B → Kπ DECAYS?

2008 ◽  
Vol 23 (21) ◽  
pp. 3296-3299 ◽  
Author(s):  
C. S. KIM ◽  
SECHUL OH ◽  
YEO WOONG YOON
Keyword(s):  
Experimental Data ◽  
Standard Model ◽  
New Physics ◽  
The Other ◽  
Tree Amplitude ◽  
Systematic Method ◽  
Cp Asymmetry ◽  
Strong Phase ◽  
Weak Phase ◽  
Hadronic Parameter

Due to re-parametrization invariance of decay amplitudes, any single new physics (NP) amplitude arising through either the electro-weak penguin (EWP) or the color-suppressed tree amplitude can be embedded simultaneously into both the color-suppressed tree and the EWP contribution in B → Kπ decays. We present a systematic method to extract each standard model (SM)-like hadronic parameter as well as new physics parameters in analytic way, so that one can pinpoint them once experimental data are given. Using the currently available experimental data for B → Kπ modes, we find two possible analytic results: one showing the large SM-like color-suppressed tree contribution and the other showing the large SM-like EWP contribution. The magnitude of the NP amplitude and its weak phase are quite large. For instance, we find |PNP/P′| = 0.39 ± 0.13, φNP = 92° ± 15° and δNP = 7° ± 26°, which are the ratio of the NP-to-SM contribution, the weak and the strong phase of the NP amplitude, respectively. We also investigate the dependence of the NP contribution on the weak phase γ and the mixing induced CP asymmetry of B0 → KSπ0, respectively

scholarly journals Fourth-generation standard model imprints inB→K*ℓ+ℓ−decays with polarizedK*

2012 ◽  
Vol 85 (3) ◽  
Author(s):  
Aqeel Ahmed ◽  
Ishtiaq Ahmed ◽  
M. Jamil Aslam ◽  
M. Junaid ◽  
M. Ali Paracha ◽  
...  
Keyword(s):  
Standard Model ◽  
Fourth Generation

scholarly journals SCALAR THREE-BODY DECAYS AND SIGNALS FOR NEW PHYSICS

1994 ◽  
Vol 09 (40) ◽  
pp. 3741-3748
Author(s):  
RATHIN ADHIKARI ◽  
BISWARUP MUKHOPADHYAYA
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Energy Distribution ◽  
Z Boson ◽  
New Physics ◽  
The Other ◽  
Fourth Generation ◽  
Higgs Boson Decaying ◽  
Massive Neutrinos ◽  
Three Body

If massive invisible particles are pair-produced in a three-body decay, the energy distribution of the other (visible) product will be sensitive to the mass of the invisible pair. We discuss the implications of this fact in the contexts of a Higgs boson decaying into (i) a Z-boson and two massive neutrinos of a fourth generation, and (ii) a Z and two lightest supersymmetric particles in the minimal supersymmetric standard model.

scholarly journals CP VIOLATION IN SUPERSYMMETRIC THEORIES

2003 ◽  
Vol 18 (10) ◽  
pp. 1697-1732 ◽  
Author(s):  
SHAABAN KHALIL
Keyword(s):  
Dipole Moment ◽  
Cp Violation ◽  
Standard Model ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Neutron Electric Dipole Moment ◽  
Cp Asymmetry ◽  
Electric Dipole Moments ◽  
The Standard Model ◽  
Supersymmetric Theories

We review the present status of the CP violating problem in supersymmetric extensions of the standard model. We analyze the constraints imposed by the experimental limits of the electron, neutron, and mercury electric dipole moments on the supersymmetric CP phases and show that only the scenarios with flavour-off-diagonal CP violation remain attractive. These scenarios require Hermitian Yukawa matrices which naturally arise in models with left–right symmetry or a SU(3) flavour symmetry. In this case, εK and ε′/ε can be saturated by a small non-universality of the soft scalar masses through the gluino and chargino contributions respectively. The model also predicts a strong correlation between A CP (b → sγ) and the neutron electric dipole moment. In this framework, the standard model gives a the leading contribution to the CP asymmetry in B → ψKS decay, while the dominant chargino contribution to this asymmetry is < 0.2. Thus, no constraint is set on the non-universality of this model by the recent BaBar and Belle measurements.

CP violation of $B_{d}-{\bar B}_{d}$ mixing in supersymmetry with gauged baryon and lepton numbers

2014 ◽  
Vol 29 (27) ◽  
pp. 1450153 ◽  
Author(s):  
Fei Sun ◽  
Tai-Fu Feng ◽  
Tie-Jun Gao ◽  
Hai-Bin Zhang ◽  
Shu-Min Zhao
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Theoretical Prediction ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Experimental Result ◽  
B Decays ◽  
Cp Asymmetry ◽  
Local Gauge ◽  
Gauge Symmetries

We analyze the CP asymmetry in flavor-specific decays [Formula: see text] for the [Formula: see text] mixing in the extension of the minimal supersymmetric standard model where baryon and lepton numbers are local gauge symmetries (BLMSSM). Considering the constraint of a 125 GeV Higgs, the numerical results indicate that the theoretical prediction of [Formula: see text] agrees with the current experimental result. For certain parameter sets, the BLMSSM contributions can be sizeable in [Formula: see text] mixing and CP asymmetry in B decays, which may help understand questions in cosmology.

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