Multielectron production at high transverse momenta in ep collisions at HERA - INSPIRE

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Multielectron production at high transverse momenta in ep collisions at HERA

H1

Collaboration

•

A. Aktas

Jul, 2003

23 pages

Published in:

Eur.Phys.J.C 31 (2003) 17-29

e-Print:

hep-ex/0307015 [hep-ex]

DOI:

10.1140/epjc/s2003-01326-x

Report number:

DESY-03-082

Experiments:

DESY-HERA-H1

View in:

reference search39 citations

Citations per year

Abstract: (arXiv)

Multi-electron production is studied at high electron transverse momentum in positron- and electron-proton collisions using the H1 detector at HERA. The data correspond to an integrated luminosity of 115 pb-1. Di-electron and tri-electron event yields are measured. Cross sections are derived in a restricted phase space region dominated by photon-photon collisions. In general good agreement is found with the Standard Model predictions. However, for electron pair invariant masses above 100 GeV, three di-electron events and three tri-electron events are observed, compared to Standard Model expectations of 0.30 \pm 0.04 and 0.23 \pm 0.04, respectively.

Note:

23 pages, 8 figures and 4 tables

positron p: colliding beams
electron p: colliding beams
photon photon: interaction
electron: multiple production
transverse momentum: high
yield: (positron electron)
yield: (3electron)
mass spectrum: (positron electron)
differential cross section: transverse momentum
H1

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