Published November 2003 | Version v1
Journal article Metadata-only

Inclusive Electromagnetic Decays of the Heavy Quarkonium at Next To Leading Log Accuracy

Creators

  • 1. Dept. d'Estructura i Constituents de la Materia, U. Barcelona, Barcelona (Spain)

Description

We show that perturbation theory may give reasonable numbers for the decays of the bottomonium and charmonium ground states to e+e- and to γγ. To reach this conclusion it is important to perform the resummation of logs. In particular, we obtain the value Γ(ηb(1S)→ γγ. ) = 0.35 ± 0.1 (th) ± 0.05 (ΛQDC) keV. (author)

Availability note (English)

Also available on http://th-www.if.uj.edu.pl/acta/

Additional details

Additional titles

Augmented title (English)
PACS numbers: 11.10.St, 12.38.Cy, 13.40.Hq, 14.40.Gx

Identifiers

URL
http://th-www.if.uj.edu.pl/acta/;

Publishing Information

Journal Title
Acta Physica Polonica. Series B
Journal Volume
B34
Journal Issue
11
Journal Page Range
p. 5295-5304
ISSN
0587-4254

Conference

Title
Matter to the Deepest - 27. International Conference of Theoretical Physics
Dates
15-21 Sep 2003
Place
Ustron (Poland)

INIS

Country of Publication
Poland
Country of Input or Organization
Poland
INIS RN
35061673
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BOTTOMONIUM; CHARMONIUM; COMPUTER CALCULATIONS; ELECTROMAGNETIC PARTICLE DECAY; ELECTRONS; PARTICLE WIDTHS; PHOTONS; POSITRONS; QUARKONIUM; RENORMALIZATION; S STATES
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BOSONS; DECAY; ELEMENTARY PARTICLES; ENERGY LEVELS; FERMIONS; HADRONS; LEPTONS; MASSLESS PARTICLES; MATTER; MESONS; PARTICLE DECAY; PARTICLE PROPERTIES; QUARKONIUM

Optional Information

Contract/Grant/Project number
MCyT Grant FPA2000-3598; CIRIT Grant 2001SGR-00065; EU Grant HPRN-CT2002-00311
Notes
9 refs., 6 figs.