Estimating the branching fraction for the Bs0→D¯0Ks0 decay by using the QCD factorization approach considering the effects of final state interactions

2018 ◽  
Vol 969 ◽  
pp. 196-205 ◽  
Author(s):  
Behnam Mohammadi
Keyword(s):  
Branching Fraction ◽  
Final State ◽  
Factorization Approach ◽  
Qcd Factorization ◽  
Final State Interactions

WEAK ANNIHILATION TOPOLOGIES AND FINAL STATE INTERACTIONS IN $B^+ \rightarrow D^+_s\phi$ DECAY

2012 ◽  
Vol 27 (11) ◽  
pp. 1250064 ◽  
Author(s):  
BEHNAM MOHAMMADI ◽  
HOSSEIN MEHRABAN
Keyword(s):  
Final State Interaction ◽  
Absorptive Part ◽  
Branching Ratio ◽  
State Interaction ◽  
Hadronic Decay ◽  
Final State ◽  
Qcd Factorization ◽  
Intermediate States ◽  
Final State Interactions ◽  
Weak Annihilation

In this research, the hadronic decay of [Formula: see text] is analyzed by using "QCD factorization" (QCDF) method and final state interaction (FSI). First, the [Formula: see text] decay is calculated via QCDF method and only the annihilation graphs exist in that method. Then, FSI is considered to solve the [Formula: see text] decay as a sizable correction and the D+*K0, D0*K+ and [Formula: see text] via the exchange of [Formula: see text], K-(*) and [Formula: see text] mesons are chosen for the intermediate states. To estimate the intermediate states amplitudes, QCDF method is again used. These amplitudes are used in the absorptive part of the diagrams. The experimental branching ratio of [Formula: see text] decay is less than 1.9×10-6 and our results according to QCDF method and FSI effects are 0.16×10-6 and 1.86×10-6, respectively.

scholarly journals Parametrizations of three-body hadronic B- and D-decay amplitudes

2019 ◽  
Vol 202 ◽  
pp. 06014
Author(s):  
Benoît Loiseau ◽  
Diogo Boito ◽  
Jean-Pierre Dedonder ◽  
Bruno El-Bennich ◽  
Rafel Escribano ◽  
...  
Keyword(s):  
Recent Work ◽  
Form Factors ◽  
Short Review ◽  
Model Description ◽  
Final States ◽  
Hadronic Final State ◽  
Final State ◽  
Factorization Approach ◽  
Final State Interactions ◽  
Three Body

A short review of our recent work on amplitude parametrizations of three-body hadronic weak B and D decays is presented. The final states are here composed of three light mesons, namely the various charge πππ, Kππ and KK$ \bar K $ states. These parametrizations are derived from previous calculations based on a quasi-two-body factorization approach where the two-body hadronic final state interactions are fully taken into account in terms of unitary S- and P-wave ππ, πK and K$ \bar K $ form factors. They are an alternative to the isobar-model description and can be useful in the interpretation of CP asymmetries.

scholarly journals ANALYSIS OF B± → K+K-K± DECAYS

2011 ◽  
Vol 26 (03n04) ◽  
pp. 542-544 ◽  
Author(s):  
L. LEŚNIAK ◽  
A. FURMAN ◽  
R. KAMIŃSKI ◽  
P. ŻENCZYKOWSKI
Keyword(s):  
Form Factors ◽  
Weak Decay ◽  
Vector Form ◽  
Final State ◽  
Scalar Form ◽  
Mass Distributions ◽  
Qcd Factorization ◽  
Final State Interactions ◽  
Coupled Channel ◽  
Low K

Rare B± decays to three charged kaons are analysed. The weak decay amplitudes are derived in the QCD factorization approach. The strong final state interactions between pairs of kaons are described using the kaon scalar and vector form factors. The scalar form factors at low K+K- effective mass distributions are constrained by chiral symmetry and are related to the coupled channel meson-meson amplitudes describing all the transitions between three channels consisting of two kaons, two pions and four pions. The vector form factors are fitted to the data on e+e- collisions. The model results are compared with the Belle and BaBar data.

scholarly journals Search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ-lepton in pp collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
◽  
G. Aad ◽  
B. Abbott ◽  
D. C. Abbott ◽  
A. Abed Abud ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Production Cross ◽  
Branching Fraction ◽  
Hadron Collider ◽  
Atlas Detector ◽  
Third Generation ◽  
Final State ◽  
Generation Scalar ◽  
Scalar Leptoquarks

Abstract A search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ-lepton is presented. The search is based on a dataset of pp collisions at $$ \sqrt{s} $$ s = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb−1. Events are selected if they have one light lepton (electron or muon) and at least one hadronically decaying τ -lepton, or at least two light leptons. In addition, two or more jets, at least one of which must be identified as containing b-hadrons, are required. Six final states, defined by the multiplicity and flavour of lepton candidates, are considered in the analysis. Each of them is split into multiple event categories to simultaneously search for the signal and constrain several leading backgrounds. The signal-rich event categories require at least one hadronically decaying τ-lepton candidate and exploit the presence of energetic final-state objects, which is characteristic of signal events. No significant excess above the Standard Model expectation is observed in any of the considered event categories, and 95% CL upper limits are set on the production cross section as a function of the leptoquark mass, for different assumptions about the branching fractions into tτ and bν. Scalar leptoquarks decaying exclusively into tτ are excluded up to masses of 1.43 TeV while, for a branching fraction of 50% into tτ, the lower mass limit is 1.22 TeV.

Final-state interactions and quasi-free scattering in the 2H(α, pα)n reaction

1974 ◽  
Vol 222 (3) ◽  
pp. 429-444 ◽  
Author(s):  
T. Rausch ◽  
H. Zell ◽  
D. Wallenwein ◽  
W. Von Witsch
Keyword(s):  
Final State ◽  
Final State Interactions
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