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Title: Search for WZ + ZZ productions with missing transverse energy + jets with b enhancement at \(\sqrt{s} = 1.96\) TeV

Abstract

Diboson production (WW + WZ + ZZ) has been observed at the Tevatron in hadronic decay modes dominated by the WW process. This paper describes the measurement of the cross section of WZ and ZZ events in final states with large E T and using b-jet identification as a tool to suppress WW contributions. Due to the limited energy resolution, we cannot distinguish between partially hadronic decays of WZ and ZZ, and we measure the sum of these processes. The number of signal events is extracted using a simultaneous fit to the invariant mass distribution of the two jets for events with two b-jet candidates and events without two b-jet candidates. We measure a cross section Σ(pp¯ → WZ,ZZ) = 5.8 -3.0 +3.6 pb, in agreement with the standard model.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [8];  [9];  [10]
  1. Harvard Univ., Cambridge, MA (United States)
  2. Univ. of Cantabria (Spain)
  3. Sezione di Padova-Trento (Italy)
  4. Univ. of Michigan, Ann Arbor, MI (United States)
  5. Northwestern Univ., Evanston, IL (United States)
  6. Instituto Nazionale di Fisica Nucleare, Frascati (Italy)
  7. Comenius Univ., Bratislava (Slovakia)
  8. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  9. Purdue Univ., West Lafayette, IN (United States)
  10. Waseda Univ., Shinjuku (Japan). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
CDF Collaboration
OSTI Identifier:
1022785
Alternate Identifier(s):
OSTI ID: 1098551
Report Number(s):
FERMILAB-PUB-11-375-E-PPD
Journal ID: ISSN 1550-7998; arXiv eprint number arXiv:1108.2060; TRN: US1104146
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 85; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; DECAY; ENERGY RESOLUTION; FERMILAB TEVATRON; MASS DISTRIBUTION; PRODUCTION; STANDARD MODEL; Experiment-HEP

Citation Formats

Aaltonen, T., Gonzalez, B. Alvarez, Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Appel, J. A., Apresyan, A., and Arisawa, T. Search for WZ + ZZ productions with missing transverse energy + jets with b enhancement at \(\sqrt{s} = 1.96\) TeV. United States: N. p., 2012. Web. doi:10.1103/PhysRevD.85.012002.
Aaltonen, T., Gonzalez, B. Alvarez, Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Appel, J. A., Apresyan, A., & Arisawa, T. Search for WZ + ZZ productions with missing transverse energy + jets with b enhancement at \(\sqrt{s} = 1.96\) TeV. United States. doi:10.1103/PhysRevD.85.012002.
Aaltonen, T., Gonzalez, B. Alvarez, Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Appel, J. A., Apresyan, A., and Arisawa, T. Fri . "Search for WZ + ZZ productions with missing transverse energy + jets with b enhancement at \(\sqrt{s} = 1.96\) TeV". United States. doi:10.1103/PhysRevD.85.012002. https://www.osti.gov/servlets/purl/1022785.
@article{osti_1022785,
title = {Search for WZ + ZZ productions with missing transverse energy + jets with b enhancement at \(\sqrt{s} = 1.96\) TeV},
author = {Aaltonen, T. and Gonzalez, B. Alvarez and Amerio, S. and Amidei, D. and Anastassov, A. and Annovi, A. and Antos, J. and Apollinari, G. and Appel, J. A. and Apresyan, A. and Arisawa, T.},
abstractNote = {Diboson production (WW + WZ + ZZ) has been observed at the Tevatron in hadronic decay modes dominated by the WW process. This paper describes the measurement of the cross section of WZ and ZZ events in final states with large ET and using b-jet identification as a tool to suppress WW contributions. Due to the limited energy resolution, we cannot distinguish between partially hadronic decays of WZ and ZZ, and we measure the sum of these processes. The number of signal events is extracted using a simultaneous fit to the invariant mass distribution of the two jets for events with two b-jet candidates and events without two b-jet candidates. We measure a cross section Σ(pp¯ → WZ,ZZ) = 5.8-3.0+3.6 pb, in agreement with the standard model.},
doi = {10.1103/PhysRevD.85.012002},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = ,
volume = 85,
place = {United States},
year = {2012},
month = {1}
}

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