Heavy Quark Symmetry and Heavy-Flavor-Conserving Nonleptonic Weak Decays

1994 ◽  
pp. 177-192
Author(s):  
Chi-Yee Cheung
Keyword(s):  
Heavy Quark ◽  
Heavy Flavor ◽  
Weak Decays ◽  
Heavy Quark Symmetry

scholarly journals Heavy quark symmetry and weak decays of thebbaryons in pentaquarks with acc¯component

2016 ◽  
Vol 94 (5) ◽  
Author(s):  
Ahmed Ali ◽  
Ishtiaq Ahmed ◽  
M. Jamil Aslam ◽  
Abdur Rehman
Keyword(s):  
Heavy Quark ◽  
Weak Decays ◽  
Heavy Quark Symmetry

HEAVY FLAVOR CONSERVING RADIATIVE DECAYS OF HEAVY MESONS

1999 ◽  
Vol 14 (13) ◽  
pp. 2133-2138
Author(s):  
R. MOHANTA ◽  
A. K. GIRI
Keyword(s):  
Heavy Quark ◽  
Light Quark ◽  
Photon Emission ◽  
Radiative Decays ◽  
Heavy Flavor ◽  
Matrix Elements ◽  
Heavy Mesons ◽  
Quark Sector ◽  
Heavy Quark Symmetry ◽  
Transition Matrix Elements

The radiative decays of heavy mesons are studied in the heavy quark symmetry formalism. Assuming the traditional picture of photon emission by the confined quark or antiquark, we obtain the transition matrix elements for the heavy quark current sector. For the light quark sector we employ the ISGW quark model. The results obtained agree reasonably well with other estimations.

scholarly journals Heavy-flavor hadro-production with heavy-quark masses renormalized in the $$ \overline{\mathrm{MS}} $$, MSR and on-shell schemes

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
M. V. Garzelli ◽  
L. Kemmler ◽  
S. Moch ◽  
O. Zenaiev
Keyword(s):  
Heavy Quark ◽  
Cross Sections ◽  
Top Quark ◽  
Quark Mass ◽  
Production Cross ◽  
Hadron Collider ◽  
Distribution Functions ◽  
Heavy Flavor ◽  
Parton Distribution Functions ◽  
Heavy Quark Mass

Abstract We present predictions for heavy-quark production at the Large Hadron Collider making use of the $$ \overline{\mathrm{MS}} $$ MS ¯ and MSR renormalization schemes for the heavy-quark mass as alternatives to the widely used on-shell renormalization scheme. We compute single and double differential distributions including QCD corrections at next-to-leading order and investigate the renormalization and factorization scale dependence as well as the perturbative convergence in these mass renormalization schemes. The implementation is based on publicly available programs, MCFM and xFitter, extending their capabilities. Our results are applied to extract the top-quark mass using measurements of the total and differential $$ t\overline{t} $$ t t ¯ production cross-sections and to investigate constraints on parton distribution functions, especially on the gluon distribution at low x values, from available LHC data on heavy-flavor hadro-production.

Heavy-flavor-conserving nonleptonic weak decays of heavy baryons

1992 ◽  
Vol 46 (11) ◽  
pp. 5060-5068 ◽  
Author(s):  
Hai-Yang Cheng ◽  
Chi-Yee Cheung ◽  
Guey-Lin Lin ◽  
Y. C. Lin ◽  
Tung-Mow Yan ◽  
...  
Keyword(s):  
Heavy Flavor ◽  
Weak Decays ◽  
Heavy Baryons

scholarly journals Ratios ofB andD meson decay constants with heavy quark symmetry

Pramana ◽  
1996 ◽  
Vol 47 (3) ◽  
pp. 261-261
Author(s):  
A K Giri ◽  
L Maharana ◽  
R Mohanta
Keyword(s):  
Heavy Quark ◽  
Meson Decay ◽  
Decay Constants ◽  
Heavy Quark Symmetry

scholarly journals Heavy-flavor-conserving hadronic weak decays of heavy baryons

2016 ◽  
Vol 2016 (3) ◽  
Author(s):  
Hai-Yang Cheng ◽  
Chi-Yee Cheung ◽  
Guey-Lin Lin ◽  
Yeu-Chung Lin ◽  
Tung-Mow Yan ◽  
...  
Keyword(s):  
Heavy Flavor ◽  
Weak Decays ◽  
Heavy Baryons

scholarly journals Non-Relativistic Model for the Semileptonic Λb→Λc Decay

1997 ◽  
Vol 12 (03) ◽  
pp. 195-204 ◽  
Author(s):  
Debrupa Chakraverty ◽  
Triptesh De ◽  
Binayak Dutta-Roy ◽  
K. S. Gupta
Keyword(s):  
Heavy Quark ◽  
Decay Width ◽  
Branching Ratio ◽  
Relativistic Model ◽  
Heavy Quark Symmetry ◽  
Heavy Baryons

We calculate the decay width for [Formula: see text] in the framework of a non-relativistic quark (NRQ) model of heavy baryons where the light quarks play the role of spectators. Our calculation does not make an explicit use of the heavy quark symmetry. The branching ratio for the above process as calculated here agrees reasonably well with the experimental value.

scholarly journals Study of nonleptonic B(s)∗→ M1M2 (M = D,Ds,π,K) weak decays with factorization approach

2015 ◽  
Vol 30 (27) ◽  
pp. 1550162 ◽  
Author(s):  
Qin Chang ◽  
Pan-Pan Li ◽  
Xiao-Hui Hu ◽  
Lin Han
Keyword(s):  
Flavor Physics ◽  
Branching Fractions ◽  
Form Factors ◽  
Approximation Formula ◽  
Heavy Flavor ◽  
Transition Form ◽  
Factorization Approach ◽  
Decay Modes ◽  
Weak Decays ◽  
Belle Ii

Motivated by the experiments of heavy flavor physics at running LHC and upgrading SuperKEKB/Belle-II in the future, the nonleptonic [Formula: see text] [Formula: see text] weak decays are studied in this paper. The amplitudes are calculated with factorization approach, and the transition form factors [Formula: see text] are evaluated within BSW model. With the reasonable approximation [Formula: see text], our predictions of branching fractions are presented. Numerically, the CKM-favored tree-dominated [Formula: see text] and [Formula: see text] decays have the largest branching fractions of the order [Formula: see text], and hence will be firstly observed by forthcoming Belle-II experiment. However, most of the other decay modes have the branching fractions [Formula: see text] and thus are hardly to be observed soon. Besides, for the possible detectable [Formula: see text] decays with branching fractions [Formula: see text], some useful ratios, such as [Formula: see text], etc. are presented and discussed in detail.

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