Published November 2009 | Version v1
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Two-photon annihilation into octet meson pairs. Symmetry relations in the handbag approach

Creators

  • 1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  • 2. Regensburg Univ. (Germany). Institut fuer Theoretische Physik
  • 3. Wuppertal Univ. (Gesamthochschule) (Germany). Fachbereich Physik

Description

We explore the implications of SU(3) flavor symmetry in the soft handbag mechanism for two-photon annihilation into pairs of pseudoscalar octet mesons. In this approach we obtain a good description of the experimental results for all measured channels at high energy, with two complex form factors adjusted to the data. We also predict the cross section for γγ→ηη. (orig.)

Availability note (English)

Available from INIS in electronic form

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Additional details

Publishing Information

Imprint Pagination
15 p.
ISSN
0418-9833
Report number
DESY--09-204

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
40108683
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BRANCHING RATIO; ELECTROMAGNETIC FORM FACTORS; ETA MESONS; EXCITATION FUNCTIONS; FLAVOR MODEL; GEV RANGE 01-10; GEV RANGE 10-100; INTEGRAL CROSS SECTIONS; KAONS MINUS; KAONS PLUS; MESON OCTETS; PAIR PRODUCTION; PHOTON-PHOTON INTERACTIONS; PHOTOPRODUCTION; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; SCATTERING AMPLITUDES; SU-3 GROUPS; THEORETICAL DATA
Descriptors DEC
AMPLITUDES; BASIC INTERACTIONS; BOSONS; COMPOSITE MODELS; CROSS SECTIONS; DATA; DIFFERENTIAL CROSS SECTIONS; DIMENSIONLESS NUMBERS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FORM FACTORS; FUNCTIONS; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; KAONS; LIE GROUPS; MATHEMATICAL MODELS; MESONS; MULTIPLETS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE MULTIPLETS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS; QUARK MODEL; STRANGE MESONS; STRANGE PARTICLES; SU GROUPS; SYMMETRY GROUPS

Optional Information

Secondary number(s)
WU-B--09-17