Exclusive heavy-meson pair production at large recoil

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.4363· OSTI ID:7224628

Baek, M S; Choi, S Y; Song, H S ^[1]

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1. Center for Theoretical Physics and Department of Physics, Seoul National University, Seoul 151-742 (Korea, Republic of)

The Brodsky-Lepage (BL) formalism in perturbative QCD is applied to estimate the validity of the heavy-quark effective theory and the high energy scaling laws to the exclusive heavy-meson pair production in two-photon collisions as well as [ital e][sup +][ital e][sup [minus]] annihilation. In addition to the ordinary heavy mesons such as [ital B] and [ital D], the heavy mesons of which both quark masses are larger than the typical strong interaction scale [Lambda][sub QCD] are considered. Explicit forms of transition amplitudes are presented for the heavy mesons with two heavy quarks in the peaking approximation and the modifications for the ordinary heavy-meson production are described. The result in the heavy-quark limit is consistent with the heavy-quark effective theory only in a certain range of center of mass energy. In the high energy limit, the transition amplitudes turn out to comply with the high energy scaling laws. The common features and different points of the [ital e][sup +][ital e][sup [minus]] and [gamma][gamma] cases are described in detail. The limitation of the BL formalism and the heavy-quark effective theory is discussed.

• OSTI ID: 7224628
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:7; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BASIC INTERACTIONS
BOSONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
INTERACTIONS
MESONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PERTURBATION THEORY
PHOTON-PHOTON INTERACTIONS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RECOILS
SCALING LAWS
TRANSITION AMPLITUDES