Study of charged current $e p$ interactions at $Q^{2}$ > $200-Gev^{2}$ with the ZEUS detector at HERA - INSPIRE

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Study of charged current $e p$ interactions at $Q^{2}$ > $200-Gev^{2}$ with the ZEUS detector at HERA

ZEUS

Collaboration

Jun, 1996

40 pages

Published in:

Z.Phys.C 72 (1996) 47-64

e-Print:

hep-ex/9606014 [hep-ex]

DOI:

10.1007/s002880050222

Report number:

DESY-96-104

Experiments:

DESY-HERA-ZEUS

View in:

ADS Abstract Service

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Abstract:

Deep inelastic charged--current reactions have been studied in

e~+p

and

e~-p

collisions at a center of mass energy of about 300\,\gev in the kinematic region Q~2\greater200\,\gev~2 and x\greater0.006 using the ZEUS detector at HERA. The integrated cross sections for Q~2\greater200\,\gev~2 are found to be \sigep=30.3\,{}~{+5.5}_{\mns4.2}\,{}~{+1.6}_{\mns2.6}\,{\rm pb} and \sigem=54.7\,{}~{+15.9}_{\mns\chax 9.8}\,{}~{+2.8}_{\mns3.4}\,{\rm pb}. Differential cross sections have been measured as functions of the variables

x

,

y

and

Q~2

. From the measured differential cross sections

d\sigma/dQ~2

, the

W

boson mass is determined to be M_W=79\,{}~{+8} _{-7}{}~{+4}_{-4}\,\gev. Measured jet rates and transverse energy profiles agree with model predictions. A search for charged--current interactions with a large rapidity gap yielded one candidate event, corresponding to a cross section of \sigep(Q~2\greater200\,\gev~2;\eta_{\rm max}<2.5)=0.8\,{}_{-0.7}~ {+1.8}\,\pm0.1\,{\rm pb}.

Note:

40 pages including 9 figures Report-no: DESY-96-104

positron p: colliding beams
colliding beams: positron p
electron p: colliding beams
colliding beams: electron p
lepton p: deep inelastic scattering
deep inelastic scattering: lepton p
momentum transfer: high
charged current
channel cross section
differential cross section

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