scholarly journals Intrinsic charm of light mesons andCPviolation in heavy quark decay

1998 ◽  
Vol 58 (5) ◽  
Author(s):  
Alexey A. Petrov
Keyword(s):  
Heavy Quark ◽  
Intrinsic Charm ◽  
Light Mesons ◽  
Quark Decay

QCD corrections to heavy quark decays

2007 ◽  
Vol 85 (6) ◽  
pp. 613-617
Author(s):  
I Blokland
Keyword(s):  
Heavy Quark ◽  
Symbolic Computation ◽  
Decay Rates ◽  
Special Cases ◽  
Quark Decays ◽  
Quark Decay

The calculation of QCD corrections to heavy quark decay rates has progressed steadily in recent years. With the help of specialized techniques, symbolic computation, and a growing base of experience, a wide variety of special cases have been evaluated. These results have been applied to decays such as t → bW, b → s γ, b → u[Formula: see text]ν, and b → c[Formula: see text]ν. PACS Nos.: 12.38.Bx, 13.30.Ce

scholarly journals Decay constants of heavy-light mesons in Bakamjian-Thomas heavy quark models

1998 ◽  
Vol 58 (11) ◽  
Author(s):  
V. Morénas ◽  
A. Le Yaouanc ◽  
L. Oliver ◽  
O. Pène ◽  
J.-C. Raynal
Keyword(s):  
Heavy Quark ◽  
Decay Constants ◽  
Light Mesons ◽  
Quark Models

scholarly journals Hadron spectra for semileptonic heavy quark decay

1996 ◽  
Vol 53 (5) ◽  
pp. 2491-2505 ◽  
Author(s):  
Adam F. Falk ◽  
Michael Luke ◽  
Martin J. Savage
Keyword(s):  
Heavy Quark ◽  
Hadron Spectra ◽  
Quark Decay

scholarly journals Matrix element corrections to parton shower simulations of heavy quark decay

1998 ◽  
Vol 442 (1-4) ◽  
pp. 417-426 ◽  
Author(s):  
G. Corcella ◽  
M.H. Seymour
Keyword(s):  
Matrix Element ◽  
Heavy Quark ◽  
Parton Shower ◽  
Quark Decay

scholarly journals A Review of the Intrinsic Heavy Quark Content of the Nucleon

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
S. J. Brodsky ◽  
A. Kusina ◽  
F. Lyonnet ◽  
I. Schienbein ◽  
H. Spiesberger ◽  
...  
Keyword(s):  
Heavy Quark ◽  
State Of The Art ◽  
Theoretical Calculations ◽  
High Energy ◽  
High Luminosity ◽  
Fixed Target ◽  
Intrinsic Charm ◽  
Target Experiment ◽  
Quark Content ◽  
Fixed Target Experiment

We present a review of the state of the art of our understanding of the intrinsic charm and bottom content of the nucleon. We discuss theoretical calculations, constraints from global analyses, and collider observables sensitive to the intrinsic heavy quark distributions. A particular emphasis is put on the potential of a high energy and high luminosity fixed target experiment using the LHC beams (AFTER@LHC) to search for intrinsic charm.

scholarly journals A CONSISTENT CALCULATION OF HEAVY MESON DECAY CONSTANTS AND TRANSITION WAVE FUNCTIONS IN THE COMPLETE HQEFT

2001 ◽  
Vol 16 (03) ◽  
pp. 377-408 ◽  
Author(s):  
W. Y. WANG ◽  
Y. L. WU
Keyword(s):  
Heavy Quark ◽  
Bound States ◽  
Scaling Law ◽  
Wave Functions ◽  
Effective Theory ◽  
Meson Decay ◽  
Sum Rule ◽  
Decay Constants ◽  
Rule Approach ◽  
Light Mesons

Within the complete heavy quark effective field theory (HQEFT), the QCD sum rule approach is used to evaluate the decay constants including 1/mQcorrections and the Isgur–Wise function and other additional important wave functions concerned at 1/mQfor the heavy–light mesons. The number of unknown wave functions or form factors in HQEFT is shown to be much less than the one in the usual heavy quark effective theory (HQET). The values of wave functions at zero recoil are found to be consistent with the ones extracted from the interesting relations (which are resulted from the HQEFT) between the hadron masses and wave functions at zero recoil. The results for the decay constants are consistent with the ones from full QCD sum rule and Lattice calculations. The 1/mQcorrections to the scaling law [Formula: see text] are found to be small in HQEFT, which demonstrates again the validity of 1/mQexpansion in HQEFT. It is also shown that the residual momentum v·k of heavy quark within heavy–light hadrons is indeed around the binding energy [Formula: see text] of the heavy hadrons, which turns out to be in agreement with the expected one in the HQEFT. Therefore such a calculation provides a consistent check on the HQEFT and shows that the HQEFT is more reliable than the usual HQET for describing a slightly off-mass shell heavy quark within hadron as the usual HQET seems to lead to large 1/mQcorrections in evaluating the meson decay constants. It is emphasized that the introduction of the "dressed heavy quark" mass is useful for the heavy–light mesons (Qq) with [Formula: see text], while for heavy–heavy bound states (ψ1ψ2) with masses m1, [Formula: see text], like bottom-charm hadrons or similarly for muonium in QED, one needs to treat both particles as heavy effective particles via 1/m1and 1/m2expansions and redefine the effective bound states and modified "dressed heavy quark" masses within the HQEFT.

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