Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings
Abstract
The cross section for the production of Zγ in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb-1. Events with an oppositely-charged pair of muons or electrons together with an isolated photon are selected. Furthermore, the differential cross section as a function of the photon transverse momentum is measured inclusively and exclusively, where the exclusive selection applies a veto on central jets. These observed cross sections are compatible with the expectations of next-to-next-to-leading-order quantum chromodynamics. As a result, limits on anomalous triple gauge couplings of ZZγ and Zγγ are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson.
- Authors:
-
- Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- CMS Collaboration
- OSTI Identifier:
- 1221267
- Report Number(s):
- FERMILAB-PUB-15-063-CMS; CERN-PH-EP-2014-303; CMS-SMP-13-014
Journal ID: ISSN 1029-8479; arXiv eprint number arXiv:1502.05664; TRN: US1500706
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 4; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Hadron-Hadron Scattering
Citation Formats
Khachatryan, Vardan. Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings. United States: N. p., 2015.
Web. doi:10.1007/JHEP04(2015)164.
Khachatryan, Vardan. Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings. United States. https://doi.org/10.1007/JHEP04(2015)164
Khachatryan, Vardan. Wed .
"Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings". United States. https://doi.org/10.1007/JHEP04(2015)164. https://www.osti.gov/servlets/purl/1221267.
@article{osti_1221267,
title = {Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings},
author = {Khachatryan, Vardan},
abstractNote = {The cross section for the production of Zγ in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb-1. Events with an oppositely-charged pair of muons or electrons together with an isolated photon are selected. Furthermore, the differential cross section as a function of the photon transverse momentum is measured inclusively and exclusively, where the exclusive selection applies a veto on central jets. These observed cross sections are compatible with the expectations of next-to-next-to-leading-order quantum chromodynamics. As a result, limits on anomalous triple gauge couplings of ZZγ and Zγγ are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson.},
doi = {10.1007/JHEP04(2015)164},
journal = {Journal of High Energy Physics (Online)},
number = 4,
volume = 2015,
place = {United States},
year = {Wed Apr 29 00:00:00 EDT 2015},
month = {Wed Apr 29 00:00:00 EDT 2015}
}
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Figures / Tables:
Figure 1: Leading-order Feynman diagrams for Zγ production in pp collisions. Left: initial-state radiation. Center: final-state radiation. Right: diagram involving aTGCs that are forbidden in the SM at tree level.
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Works referencing / citing this record:
Measurement of the WZ production cross section in pp collisions at $$\sqrt{s} = 7$$ s = 7 and 8 $$\,\text{TeV}$$ TeV and search for anomalous triple gauge couplings at $$\sqrt{s} = 8\,\text{TeV} $$ s = 8 TeV
journal, April 2017
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Figures / Tables found in this record:
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