Factorization in exclusive quarkonium production

Journal Article · Tue Jun 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.114014· OSTI ID:21407960

Bodwin, Geoffrey T; Garcia i Tormo, Xavier; Lee, Jungil ^[1]

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1. High Energy Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)

We present factorization theorems for two exclusive heavy-quarkonium production processes: production of two quarkonia in e{sup +}e{sup -} annihilation and production of a quarkonium and a light meson in B-meson decays. We describe the general proofs of factorization and supplement them with explicit one-loop analyses, which illustrate some of the features of the soft-gluon cancellations. We find that violations of factorization are generally suppressed relative to the factorized contributions by a factor v{sup 2}m{sub c}/Q for each S-wave charmonium and a factor m{sub c}/Q for each L-wave charmonium with L>0. Here, v is the velocity of the heavy quark or antiquark in the quarkonium rest frame, Q={radical}(s) for e{sup +}e{sup -} annihilation, Q=m{sub B} for B-meson decays, {radical}(s) is the e{sup +}e{sup -} center-of-momentum energy, m{sub c} is the charm-quark mass, and m{sub B} is the B-meson mass. There are modifications to the suppression factors if quantum-number restrictions apply for the specific process.

• OSTI ID: 21407960
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 11; Other Information: DOI: 10.1103/PhysRevD.81.114014; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ANTIQUARKS
B MESONS
B QUARKS
C QUARKS
CHARMONIUM
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
FACTORIZATION
GLUONS
MASS
MODIFICATIONS
PARTICLE DECAY
POSITRONS
QUARKONIUM
S WAVES
SEISMIC SURFACE WAVES
T QUARKS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CHARM PARTICLES
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MATTER
MESONS
PARTIAL WAVES
PARTICLE INTERACTIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKS
SEISMIC WAVES
TOP PARTICLES