The two roads to 'Intrinsic Charm' in B decays

被引：32
作者：
Bigi, Ikaros [1 ]
Mannel, Thomas [2 ]
Turczyk, Sascha [2 ]
Uraltsev, Nikolai [1 ,2 ,3 ]
机构：
[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
[2] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany
[3] St Petersburg Nucl Phys Inst, St Petersburg 188300, Russia
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2010年 / 04期
关键词：
Quark Masses and SM Parameters; B-Physics; Heavy Quark Physics; Standard Model; QUARK; HEAVY; ANNIHILATION; LIFETIME; HADRONS;
D O I：
10.1007/JHEP04(2010)073
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We describe two complementary ways to show the presence of higher order effects in the 1/m(Q) expansion for inclusive B decays that have been dubbed 'Intrinsic Charm'. Apart from the lessons they can teach us about QCD's nonperturbative dynamics their consideration is relevant for precise extractions of |V-cb|: for they complement the estimate of the potential impact of 1/m(Q)(4) contributions. We draw semiquantitative conclusions for the expected scale of Weak Annihilation in semileptonic B decays, both for its valence and non-valence components.
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页数：21
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