B → M1M2 DECAYS AND NEW PHYSICS EFFECTS IN THE mSUGRA MODEL

2007 ◽  
Vol 22 (31) ◽  
pp. 5997-6010
Author(s):  
Zhen-Jun Xiao ◽  
Wenjuan Zou
Keyword(s):  
New Physics ◽  
Numerical Results ◽  
Hadronic Decays ◽  
Factorization Approach ◽  
Decay Channels ◽  
Qcd Factorization ◽  
Minimal Supergravity ◽  
Light Mesons ◽  
Pseudo Scalar

By employing the QCD factorization approach, we calculated the new physics contributions to the two-body charmless hadronic decays B → M1M2 (Mi refers to light pseudo-scalar or vector light mesons) in the minimal supergravity (mSUGRA) model. In this talk we present the major numerical results and phenomenological discussions about these eighty decay channels.

B→J/ψρ DECAY WITHIN QCD FACTORIZATION APPROACH

2011 ◽  
Vol 26 (40) ◽  
pp. 3041-3054 ◽  
Author(s):  
MAHBOOBEH SAYAHI ◽  
HOSSEIN MEHRABAN
Keyword(s):  
Experimental Data ◽  
B Meson ◽  
Factorization Method ◽  
Branching Ratios ◽  
Light Meson ◽  
Hadronic Decays ◽  
Factorization Approach ◽  
Qcd Factorization ◽  
Effective Coefficients

In this paper, the hadronic decays B+→J/ψρ+ and B0→J/ψρ0 have been analyzed in "QCD factorization" method. The effective coefficients [Formula: see text] have been calculated for three helicity states (h = 0, +, -) which given three contributions of amplitude. We have assumed two scenarios for J/ψ. First, we have considered that J/ψ behaves as a light meson in comparison with B-meson and in other scenario, we have considered mass of J/ψ in our calculations. The branching ratios are calculated in these conditions and also in different energy scales. The obtained results are in agreement with available experimental data at second scenario and μ = mb/2.

scholarly journals Bc→BP,BVDecays with the QCD Factorization Approach

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Junfeng Sun ◽  
Na Wang ◽  
Qin Chang ◽  
Yueling Yang
Keyword(s):  
Branching Ratio ◽  
Lhcb Collaboration ◽  
Factorization Approach ◽  
Decay Channels ◽  
Qcd Factorization

We studied the nonleptonicBc→BP,BVdecays with the QCD factorization approach. It is found that the Cabibbo favored processes ofBc→Bsπ,Bsρ,BuK-are the promising decay channels with branching ratio larger than 1%, which should be observed earlier by the LHCb collaboration.

scholarly journals Precision Higgs couplings in neutral naturalness models: an effective field theory approach

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Lucien Heurtier ◽  
Hao-Lin Li ◽  
Huayang Song ◽  
Shufang Su ◽  
Wei Su ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Goldstone Boson ◽  
Higgs Sector ◽  
New Physics ◽  
Effective Field ◽  
Precision Measurements ◽  
Global Symmetry ◽  
Theory Approach ◽  
Decay Channels

AbstractThe Higgs sector in neutral naturalness models provides a portal to the hidden sectors, and thus measurements of Higgs couplings at current and future colliders play a central role in constraining the parameter space of the model. We investigate a class of neutral naturalness models, in which the Higgs boson is a pseudo-Goldstone boson from the universal SO(N)/SO(N −1) coset structure. Integrating out the radial mode from the spontaneous global symmetry breaking, we obtain various dimension-six operators in the Standard Model effective field theory, and calculate the low energy Higgs effective potential with radiative corrections included. We perform aχ2fit to the Higgs coupling precision measurements at current and future colliders and show that the new physics scale could be explored up to 2.3 (2.4) TeV without (with) the Higgs invisible decay channels at future Higgs factories. The limits are comparable to the indirect constraints obtained via electroweak precision measurements.

CAN WE RELATE TIME-REVERSAL VIOLATION TO NEW PHYSICS PROCESSES IN WEAK HADRONIC DECAYS?

2013 ◽  
Vol 22 (03) ◽  
pp. 1330006 ◽  
Author(s):  
Z. J. AJALTOUNI ◽  
E. DI SALVO
Keyword(s):  
Experimental Data ◽  
Cp Violation ◽  
Standard Model ◽  
Time Reversal ◽  
Review Paper ◽  
New Physics ◽  
Hadronic Decays ◽  
Beyond The Standard Model ◽  
Weak Decays ◽  
The Standard Model

This review paper stresses the possible connection between time-reversal violation and new physics processes beyond the standard model. In particular, this violation is proposed as an alternative to CP violation in the search for such unkown processes. Emphasis is put on the weak decays of heavy hadrons, especially beauty ones. Specific methods for extracting useful parameters from experimental data are elaborated in order to test TR symmetry. These methods could be used successfully in the analysis of the LHC data.

scholarly journals New physics in inclusive semileptonic B decays including nonperturbative corrections

2019 ◽  
Vol 34 (06n07) ◽  
pp. 1950036 ◽  
Author(s):  
Saeed Kamali
Keyword(s):  
New Physics ◽  
Numerical Results ◽  
B Decays ◽  
Power Corrections ◽  
Semileptonic B Decays

In this work, we study the effects of New Physics (NP) operators on the inclusive [Formula: see text] decay including power [Formula: see text] corrections in the NP operators. In analogy with [Formula: see text] observables, we study the observable [Formula: see text]. We present some numerical results for [Formula: see text] and compare the results for this observable with and without power corrections in the NP contributions.

scholarly journals Contributions from $${\Phi }_{B2}$$ to the B $${\rightarrow }$$ PP decays within the QCD factorization

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
Qin Chang ◽  
Lili Chen ◽  
Yunyun Zhang ◽  
Junfeng Sun ◽  
Yueling Yang
Keyword(s):  
Theoretical Calculation ◽  
Measurement Precision ◽  
Distribution Amplitude ◽  
Factorization Approach ◽  
Weak Decays ◽  
Qcd Factorization ◽  
Pseudoscalar Mesons

AbstractWith the potential for the improvements of measurement precision, the refinement of theoretical calculation on hadronic B weak decays is necessary. In this paper, we study the contributions of B mesonic distribution amplitude $${\Phi }_{B2}$$ΦB2 within the QCD factorization approach, and find that $${\Phi }_{B2}$$ΦB2 contributes to only the nonfactorizable annihilation amplitudes for the B$${\rightarrow }$$→PP decays (P denotes the ground SU(3) pseudoscalar mesons). Although small, the $${\Phi }_{B2}$$ΦB2 contributions might be helpful for improving the performance of the QCD factorization approach, especially for the pure annihilation $$B_{d}$$Bd$${\rightarrow }$$→$$K^{+}K^{-}$$K+K- and $$B_{s}$$Bs$${\rightarrow }$$→$${\pi }^{+}{\pi }^{-}$$π+π- decays.

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