Light-front zero-mode contribution to the good current in weak transitions

Journal Article · Fri Jul 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.013004· OSTI ID:20711037

Choi, Ho-Meoyng ^[1]; Ji, Chueng-Ryong ^[2]

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1. Department of Physics Education, Kyungpook National University, Daegu, 702-701 (Korea, Republic of)
2. Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States)

We examine the light-front zero-mode contribution to the good (+) current matrix elements between pseudoscalar and vector mesons. In particular, we discuss the transition form factor f(q{sup 2}) which has been suspected to have the light-front zero-mode contribution. While the zero-mode contribution in principle depends on the form of the vector meson vertex {gamma}{sup {mu}}={gamma}{sup {mu}}-(P{sub V}-2k){sup {mu}}/D, the form factor f(q{sup 2}) is found to be free from the zero-mode contribution if the denominator D contains the term proportional to the light-front energy (k{sup -}){sup n} with the power n>0. The lack of zero-mode contribution benefits the light-front quark model phenomenology. We present our numerical calculations for the B{yields}{rho} transition.

• OSTI ID: 20711037
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
CHARGED CURRENTS
FORM FACTORS
HADRONIC PARTICLE DECAY
MATRIX ELEMENTS
QUARK MODEL
RHO-770 MESONS