scholarly journals Radiative leptonic decays of heavy mesons in heavy quark limit

2006 ◽  
Vol 46 (2) ◽  
pp. 379-384 ◽  
Author(s):  
C.-W. Hwang
Keyword(s):  
Heavy Quark ◽  
Heavy Mesons ◽  
Leptonic Decays ◽  
Heavy Quark Limit

B-S EQUATION ANALYSIS OF HEAVY BARYON DECAYS

1996 ◽  
Vol 11 (18) ◽  
pp. 1523-1528 ◽  
Author(s):  
X.-H. GUO ◽  
T. MUTA
Keyword(s):  
Heavy Quark ◽  
Heavy Baryon ◽  
Equation Analysis ◽  
Heavy Quark Limit

As heavy baryon ΛQ (Q=b or c) consists of a heavy quark and a scalar light diquark, we establish the Bethe-Salpeter (B-S) equation for ΛQ in the heavy quark limit. With the reasonable kernel we solve the B-S equation numerically and calculate the Isgur-Wise function as Λb→Λc.

scholarly journals Deconfinement transition in QCD near the heavy quark limit

2011 ◽  
Author(s):  
Hana Saito ◽  
Sinya Aoki ◽  
K. Kanaya ◽  
H. Ohnishi ◽  
S. Ejiri ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Heavy Quark Limit

scholarly journals SUM RULES IN THE HEAVY QUARK LIMIT OF QCD AND ISGUR-WISE FUNCTIONS

2005 ◽  
Author(s):  
F. JUGEAU ◽  
A. LE YAOUANC ◽  
L. OLIVER ◽  
J.-C. RAYNAL
Keyword(s):  
Heavy Quark ◽  
Sum Rules ◽  
Heavy Quark Limit

Symmetry-breaking corrections to the form factors for heavy-to-heavy B-meson at large recoil

2019 ◽  
Vol 34 (08) ◽  
pp. 1950046
Author(s):  
Saba Shafaq ◽  
Ishtiaq Ahmed ◽  
M. Jamil Aslam
Keyword(s):  
Perturbation Theory ◽  
Symmetry Breaking ◽  
Heavy Quark ◽  
B Meson ◽  
Form Factors ◽  
Heavy Meson ◽  
Effective Theory ◽  
Vertex Corrections ◽  
Soft Collinear Effective Theory ◽  
Heavy Quark Limit

The present study investigates the decay of B to heavy meson using the soft collinear effective theory. By assigning different loop momenta, the factorization has been tested and it is found to be valid to all orders in the perturbation theory. It is noted that theory contains one hard collinear and two soft modes depending upon virtuality of different momenta. In the next step, symmetry-conserving relations (in heavy quark limits) to the form factors have been studied. These relations are then used to parametrize the form factors to get symmetry-breaking corrections. These symmetry-breaking corrections can be calculated using perturbative (vertex corrections) as well as nonperturbative (hard spectator interactions) QCD. It is found that in the heavy quark limit, these symmetry contributions do not contribute to the form factors that appear in physical observables for the case of [Formula: see text] decays which are contrary to the heavy-to-light meson decays.

scholarly journals SYMMETRIES AND SYSTEMATICS OF DOUBLY HEAVY HADRONS

2012 ◽  
Vol 27 (08) ◽  
pp. 1250039 ◽  
Author(s):  
B. EAKINS ◽  
W. ROBERTS
Keyword(s):  
Experimental Data ◽  
Excitation Energy ◽  
Heavy Quark ◽  
Quark Model ◽  
Strange Quark ◽  
Heavy Meson ◽  
Heavy Quarks ◽  
Heavy Mesons ◽  
Heavy Baryons

We discuss the extension of the superflavor symmetry of doubly heavy baryons to states which contain an excited heavy diquark and we examine some of the consequences of this symmetry for the spectra of doubly heavy baryons and heavy mesons. We explore the ramifications of a proposed symmetry that relates heavy diquarks to doubly heavy mesons. We present a method for determining how the excitation energy of a system containing two heavy quarks will scale as one changes the strength of the interactions and the reduced mass of the system. We use this to derive consequences of the heavy diquark-doubly heavy meson symmetry. We compare these consequences to the results of a quark model as well as the experimental data for doubly and singly heavy mesons. We also discuss the possibility of treating the strange quark as a heavy quark and apply the ideas developed here to strange hadrons.

scholarly journals Analysis of the decays B→ππ and πK with QCD factorization in the heavy quark limit

2000 ◽  
Vol 488 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Dongsheng Du ◽  
Deshan Yang ◽  
Guohuai Zhu
Keyword(s):  
Heavy Quark ◽  
Qcd Factorization ◽  
Heavy Quark Limit
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