Multi-leptons with High Transverse Momentum at HERA

H1 Collaboration; ZEUS Collaboration

doi:10.1088/1126-6708/2009/10/013

Multi-leptons with High Transverse Momentum at HERA

H1 Collaboration
, ZEUS Collaboration

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb-1. The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e+p collision data with a scalar sum of the lepton transverse momenta above 100GeV while 1.94 ± 0.17 events are expected. Such events are not observed in e-p collisions for which 1.19 ± 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.

Original language	American English
Article number	013
Journal	Journal of High Energy Physics
Issue number	10
DOIs	https://doi.org/10.1088/1126-6708/2009/10/013
State	Published - Oct 2009

Keywords

Lepton-nucleon scattering

Disciplines

Physics

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Multi-leptons with High Transverse Momentum at HERAFinal published version, 355 KBLicense: Unspecified

Cite this

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title = "Multi-leptons with High Transverse Momentum at HERA",

abstract = "Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb-1. The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e+p collision data with a scalar sum of the lepton transverse momenta above 100GeV while 1.94 ± 0.17 events are expected. Such events are not observed in e-p collisions for which 1.19 ± 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.",

keywords = "Lepton-nucleon scattering",

author = "\{H1 Collaboration\} and \{ZEUS Collaboration\} and Mattingly, \{Margarita C. K.\}",

year = "2009",

month = oct,

doi = "10.1088/1126-6708/2009/10/013",

language = "American English",

journal = "Journal of High Energy Physics",

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TY - JOUR

T1 - Multi-leptons with High Transverse Momentum at HERA

AU - H1 Collaboration

AU - ZEUS Collaboration

AU - Mattingly, Margarita C. K.

PY - 2009/10

Y1 - 2009/10

N2 - Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb-1. The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e+p collision data with a scalar sum of the lepton transverse momenta above 100GeV while 1.94 ± 0.17 events are expected. Such events are not observed in e-p collisions for which 1.19 ± 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.

AB - Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb-1. The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e+p collision data with a scalar sum of the lepton transverse momenta above 100GeV while 1.94 ± 0.17 events are expected. Such events are not observed in e-p collisions for which 1.19 ± 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.

KW - Lepton-nucleon scattering

UR - https://digitalcommons.andrews.edu/pubs/1856

U2 - 10.1088/1126-6708/2009/10/013

DO - 10.1088/1126-6708/2009/10/013

M3 - Article

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 013

ER -

Multi-leptons with High Transverse Momentum at HERA

Abstract

Keywords

Disciplines

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