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Title: Search for ZZ and Z{gamma}* Production in pp Collisions at {radical}(s)=1.96 TeV and Limits on Anomalous ZZZ and ZZ{gamma}* Couplings

Abstract

We present a study of {mu}{mu}{mu}{mu}, eeee, and {mu}{mu}ee events using 1 fb{sup -1} of data collected with the D0 detector at the Fermilab Tevatron pp Collider at {radical}(s)=1.96 TeV. Requiring the lepton pair masses to be greater than 30 GeV, we observe one event, consistent with the expected background of 0.13{+-}0.03 events and with the predicted standard model ZZ and Z{gamma}* production of 1.71{+-}0.15 events. We set an upper limit on the ZZ and Z{gamma}* cross section of 4.4 pb at the 95% C.L. We also derive limits on anomalous neutral trilinear ZZZ and ZZ{gamma}* gauge couplings. The one-parameter 95% C.L. coupling limits with a form-factor scale {lambda}=1.2 TeV are -0.28<f{sub 40}{sup Z}<0.28, -0.31<f{sub 50}{sup Z}<0.29, -0.26<f{sub 40}{sup {gamma}}<0.26, and -0.30<f{sub 50}{sup {gamma}}<0.28.

Authors:
; ; ; ; ; ; ;  [1]; ; ; ; ; ; ; ; ;  [2]; ; ;  [3]
  1. Joint Institute for Nuclear Research, Dubna (Russian Federation)
  2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
  3. Michigan State University, East Lansing, Michigan 48824 (United States)
Publication Date:
OSTI Identifier:
21123803
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 100; Journal Issue: 13; Other Information: DOI: 10.1103/PhysRevLett.100.131801; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; FERMILAB TEVATRON; FORM FACTORS; LEPTONS; PARTICLE PRODUCTION; PROTON-PROTON INTERACTIONS; STANDARD MODEL; TEV RANGE 01-10; Z NEUTRAL BOSONS

Citation Formats

Abazov, V M, Alexeev, G D, Kalinin, A M, Kharzheev, Y M, Malyshev, V L, Tokmenin, V V, Vertogradov, L S, Yatsunenko, Y A, Abbott, B, Gutierrez, P, Hossain, S, Jain, S, Kopal, M, Rominsky, M, Severini, H, Skubic, P, Strauss, M, Abolins, M, Benitez, J A, and Brock, R. Search for ZZ and Z{gamma}* Production in pp Collisions at {radical}(s)=1.96 TeV and Limits on Anomalous ZZZ and ZZ{gamma}* Couplings. United States: N. p., 2008. Web. doi:10.1103/PHYSREVLETT.100.131801.
Abazov, V M, Alexeev, G D, Kalinin, A M, Kharzheev, Y M, Malyshev, V L, Tokmenin, V V, Vertogradov, L S, Yatsunenko, Y A, Abbott, B, Gutierrez, P, Hossain, S, Jain, S, Kopal, M, Rominsky, M, Severini, H, Skubic, P, Strauss, M, Abolins, M, Benitez, J A, & Brock, R. Search for ZZ and Z{gamma}* Production in pp Collisions at {radical}(s)=1.96 TeV and Limits on Anomalous ZZZ and ZZ{gamma}* Couplings. United States. doi:10.1103/PHYSREVLETT.100.131801.
Abazov, V M, Alexeev, G D, Kalinin, A M, Kharzheev, Y M, Malyshev, V L, Tokmenin, V V, Vertogradov, L S, Yatsunenko, Y A, Abbott, B, Gutierrez, P, Hossain, S, Jain, S, Kopal, M, Rominsky, M, Severini, H, Skubic, P, Strauss, M, Abolins, M, Benitez, J A, and Brock, R. Fri . "Search for ZZ and Z{gamma}* Production in pp Collisions at {radical}(s)=1.96 TeV and Limits on Anomalous ZZZ and ZZ{gamma}* Couplings". United States. doi:10.1103/PHYSREVLETT.100.131801.
@article{osti_21123803,
title = {Search for ZZ and Z{gamma}* Production in pp Collisions at {radical}(s)=1.96 TeV and Limits on Anomalous ZZZ and ZZ{gamma}* Couplings},
author = {Abazov, V M and Alexeev, G D and Kalinin, A M and Kharzheev, Y M and Malyshev, V L and Tokmenin, V V and Vertogradov, L S and Yatsunenko, Y A and Abbott, B and Gutierrez, P and Hossain, S and Jain, S and Kopal, M and Rominsky, M and Severini, H and Skubic, P and Strauss, M and Abolins, M and Benitez, J A and Brock, R},
abstractNote = {We present a study of {mu}{mu}{mu}{mu}, eeee, and {mu}{mu}ee events using 1 fb{sup -1} of data collected with the D0 detector at the Fermilab Tevatron pp Collider at {radical}(s)=1.96 TeV. Requiring the lepton pair masses to be greater than 30 GeV, we observe one event, consistent with the expected background of 0.13{+-}0.03 events and with the predicted standard model ZZ and Z{gamma}* production of 1.71{+-}0.15 events. We set an upper limit on the ZZ and Z{gamma}* cross section of 4.4 pb at the 95% C.L. We also derive limits on anomalous neutral trilinear ZZZ and ZZ{gamma}* gauge couplings. The one-parameter 95% C.L. coupling limits with a form-factor scale {lambda}=1.2 TeV are -0.28<f{sub 40}{sup Z}<0.28, -0.31<f{sub 50}{sup Z}<0.29, -0.26<f{sub 40}{sup {gamma}}<0.26, and -0.30<f{sub 50}{sup {gamma}}<0.28.},
doi = {10.1103/PHYSREVLETT.100.131801},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 13,
volume = 100,
place = {United States},
year = {2008},
month = {4}
}