Exclusive production of $p\bar{p}$ pairs in two photon collisions at PEP

Aihara, H.; Alston-Garnjost, M.; Avery, R.E.; Barbaro-Galtieri, A.; Barker, A.R.; Barnes, A.V.; Barnett, B.A.; Bauer, Daniel A.; Bengtsson, H.U.; Bintinger, D.L.

doi:10.1103/PhysRevD.36.3506

Exclusive production of $p\bar{p}$ pairs in two photon collisions at PEP

TPC/Two Gamma

Collaboration

May, 1987

18 pages

Published in:

Phys.Rev.D 36 (1987) 3506

DOI:

10.1103/PhysRevD.36.3506

Report number:

UCD-87-10

Experiments:

SLAC-PEP-004

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Abstract: (APS)

We report cross sections for the process γγ→pp¯ at center-of-mass energies W from 2.0 to 2.8 GeV. These results have been extracted from measurements of e+e−→e+e−pp¯ at an overall center-of-mass energy of 29 GeV, using the TPC/Two-Gamma facility at the SLAC storage ring PEP. Cross sections for the untagged mode [both photons nearly real] are shown to lie well above QCD predictions. Results are also presented for the single-tagged mode [one photon in the range 0.16

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: INELASTIC SCATTERING
INELASTIC SCATTERING: ELECTRON POSITRON
EXCHANGE: TWO-PHOTON
TWO-PHOTON: EXCHANGE
PHOTON PHOTON: EXCLUSIVE REACTION
P: PAIR PRODUCTION
PAIR PRODUCTION: P
P: ELECTROPRODUCTION

References(18)

Figures(0)

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