Published September 2016 | Version v1
Journal article Metadata-only

ηc production associated with light hadrons at the B-factories and the future Super B-factories

Creators

  • 1. Peking University, Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Beijing (China)
  • 2. Guizhou Minzu University, School of Science, Guiyang (China)
  • 3. Chongqing University of Posts and Telecommunications, School of Science, Chongqing (China)
  • 4. Third Military Medical University, Institute of Digital Medicine, School of Biomedical Engineering, Chongqing (China)

Description

We present a complete study of the associated production of the ηc meson with light hadrons in e+e- collisions at the B-factory energy, which is demonstrated to be one of the best laboratories for testing the colour-octet (CO) mechanism. The colour-singlet contributions are evaluated up to O(α2αs3), while the CO ones are evaluated up to O(α2αs2). For the first time, the angular distribution of the 1S0[8] production is studied at QCD next-to-leading order. We find that the 1S0[8] channel dominates the total cross section, while the 1P1[8] one exhibits its importance in the angular distribution, which turns out to be downward going with respect to cosθ. This can be considered as the most distinct signal for the CO mechanism. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s10052-016-4360-x

Additional details

Identifiers

DOI
10.1140/epjc/s10052-016-4360-x;

Publishing Information

Journal Title
European Physical Journal. C, Particles and Fields (Online)
Journal Volume
76
Journal Issue
9
Journal Page Range
p. 1-8
ISSN
1434-6052

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
47117051
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANGULAR DISTRIBUTION; ANTIQUARKS; COLOR MODEL; DIFFERENTIAL CROSS SECTIONS; ELECTRON-POSITRON INTERACTIONS; ETA C-2980 MESONS; GEV RANGE 10-100; GLUONS; INCLUSIVE INTERACTIONS; INTEGRAL CROSS SECTIONS; MESON OCTETS; P STATES; PAIR PRODUCTION; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; QUANTUM ELECTRODYNAMICS; REST MASS; S STATES; THEORETICAL DATA
Descriptors DEC
ANTIMATTER; ANTIPARTICLES; BOSONS; CHARMONIUM; COMPOSITE MODELS; CROSS SECTIONS; DATA; DISTRIBUTION; ELECTRODYNAMICS; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; FERMIONS; FIELD THEORIES; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MASS; MATHEMATICAL MODELS; MATTER; MESONS; MULTIPLETS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE MULTIPLETS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARK MODEL; QUARKONIUM; QUARKS