scholarly journals Uncertainty in the leading-order perturbative QCD calculations ofB-meson decays

2006 ◽  
Vol 74 (1) ◽  
Author(s):  
Takeshi Kurimoto
Keyword(s):  
Perturbative Qcd ◽  
Leading Order ◽  
Meson Decays

scholarly journals |Vub| Determination by B → Dsπ

2003 ◽  
Vol 18 (22) ◽  
pp. 1557-1567 ◽  
Author(s):  
Hideaki Hayakawa ◽  
Kaoru Hosokawa ◽  
Takeshi Kurimoto
Keyword(s):  
Perturbative Qcd ◽  
B Meson ◽  
B Meson Decays ◽  
Meson Decays ◽  
Factorizable Contribution

We investigate [Formula: see text] decay in perturbative QCD approach which has recently been applied to B-meson decays. [Formula: see text] decay (and its charge conjugated mode) can be one of the hopeful modes to determine |Vub| since it occurs through b → u transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives [Formula: see text].

scholarly journals HARD-POMERON BEHAVIOR OF THE LONGITUDINAL STRUCTURE FUNCTION FL IN THE NEXT-TO-LEADING ORDER AT LOW x

2009 ◽  
Vol 18 (01) ◽  
pp. 131-140 ◽  
Author(s):  
G. R. BOROUN
Keyword(s):  
Perturbation Theory ◽  
Structure Function ◽  
Perturbative Qcd ◽  
Gluon Distribution ◽  
Analytic Formula ◽  
Leading Order ◽  
Longitudinal Structure ◽  
Longitudinal Structure Function ◽  
Low X

We present an analytic formula to extract the longitudinal structure function in the next-to-leading order of the perturbation theory at low x, from the Regge-like behavior of the gluon distribution and the structure function at this limit. In this approach, the longitudinal structure function has the hard-Pomeron behavior. The determined values are compared with the H1 data and MRST model. All results can consistently be described within the framework of perturbative QCD, which essentially show increases as x decreases.

scholarly journals Next-to-leading order perturbative QCD corrections to baryon correlators in matter

2008 ◽  
Vol 78 (3) ◽  
Author(s):  
S. Groote ◽  
J. G. Körner ◽  
A. A. Pivovarov
Keyword(s):  
Perturbative Qcd ◽  
Leading Order

scholarly journals Perturbative QCD effects in heavy meson decays

1990 ◽  
Vol 243 (3) ◽  
pp. 287-292 ◽  
Author(s):  
Adam Szczepaniak ◽  
Ernest M. Henley ◽  
Stanley J. Brodsky
Keyword(s):  
Perturbative Qcd ◽  
Heavy Meson ◽  
Meson Decays

scholarly journals Improved perturbative QCD formalism for Bc meson decays

2018 ◽  
Vol 97 (11) ◽  
Author(s):  
Xin Liu ◽  
Hsiang-nan Li ◽  
Zhen-Jun Xiao
Keyword(s):  
Perturbative Qcd ◽  
Meson Decays ◽  
Bc Meson
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