Weak decays in the light-front quark model

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.52.3966· OSTI ID:249531

O`Donnell, P J; Xu, Q P ^[1]; Tung, H K.K. ^[2]

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1. Physics Department, University of Toronto, Toronto, Ontario, M5S 1A7 (Canada)
2. Department of Applied Physics, Hong Kong Polytechnic University, Hung Hom (Hong Kong)

We study the form factors of heavy-to-heavy and heavy-to-light weak decays using the light-front relativistic quark model. For the heavy-to-heavy {ital B}{r_arrow}{ital D}{sup (*)} semileptonic decays we calculate the corresponding Isgur-Wise function for the while kinematic region. For the heavy-to-light {ital B}{r_arrow}{ital P} and {ital B}{r_arrow}{ital V} semileptonic decays we calculate the form factors at {ital q}{sup 2}=0; in particular, we have derived the dependence of the form factors on the {ital b}-quark mass in the {ital m}{sub {ital b}}{r_arrow}{infinity} limit. This dependence cannot be produced by extrapolating the scaling behavior of the form factors at {ital q}{sub max}{sup 2} using the single-pole assumption. This shows that the {ital q}{sup 2} dependence of the form factors in regions far away from the zero recoil could be much more complicated than that predicted by the single-pole assumption.

• OSTI ID: 249531
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 52; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B MESONS
BEAUTY PARTICLES
D*-2010 MESONS
FORM FACTORS
LIGHT CONE
MASS
QUARK MODEL
QUARKS
SEMILEPTONIC DECAY