A study of $\eta$ formation in photon-photon collisions at PEP - INSPIRE

DataBETA

A study of $\eta$ formation in photon-photon collisions at PEP

TPC/Two Gamma

Collaboration

•

H. Aihara

Sep, 1985

15 pages

Published in:

Phys.Rev.D 33 (1986) 844

DOI:

10.1103/PhysRevD.33.844

PDG:

{{\mathit \eta}}

\rightarrow

{{\mathit \gamma}}

Report number:

UCLA-85-013

Experiments:

SLAC-PEP-004

View in:

OSTI Information Bridge Server

reference search31 citations

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Abstract: (APS)

The two-photon production of the η meson has been observed, and a value has been determined for the two-photon η decay width by a measurement of the cross section σ(e+e−→e+e−η) where η→γγ. The measurement was made with the TPC/Two-Gamma facility at the SLAC e+e− collider PEP, with an accumulated data sample of 64.5 pb−1. The η→γγ events were both triggered and detected by the pole-tip calorimeter. The measured two-photon η decay width is Γη→γγ=0.64±0.14 (statistical) ±0.13 (systematic) keV, in agreement with earlier similarly determined values.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: INELASTIC SCATTERING
INELASTIC SCATTERING: ELECTRON POSITRON
EXCHANGE: TWO-PHOTON
TWO-PHOTON: EXCHANGE
PHOTON PHOTON: INTERACTION
INTERACTION: PHOTON PHOTON
ETA(958): PHOTOPRODUCTION
PHOTOPRODUCTION: ETA(958)

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