Analysis of anomalous quartic WWZγ couplings in γp collision at the LHC

A. Senol (Department of Physics, Abant Izzet Baysal University, Bolu, 14280, Turkey) ; M. Köksal (Department of Physics, Cumhuriyet University, Sivas, 58140, Turkey)

Gauge boson self-couplings are exactly determined by the non-Abelian gauge nature of the Standard Model (SM), thus precision measurements of these couplings at the LHC provide an important opportunity to test the gauge structure of the SM and the spontaneous symmetry breaking mechanism. It is a common way to examine the physics of anomalous quartic gauge boson couplings via effective Lagrangian method. In this work, we investigate the potential of the process pp→pγp→pWZqX to analyze anomalous quartic WWZγ couplings by two different, CP-violating and CP-conserving, effective Lagrangians at the LHC. We calculate 95% confidence level limits on the anomalous coupling parameters with various values of the integrated luminosity. Our numerical results show that the best limits obtained on the anomalous couplings k0WΛ2 , kcWΛ2 , k2mΛ2 and anΛ2 at s=14 TeV and an integrated luminosity of Lint=100 fb−1 are [−1.37;1.37]×10−6 GeV−2 , [−1.88;1.88]×10−6 GeV−2 , [−6.55;6.55]×10−7 GeV−2 and [−2.21;2.21]×10−6 GeV−2 , respectively. Thus, γp mode of photon-induced reactions at the LHC highly improves the sensitivity limits of the anomalous coupling parameters k0WΛ2 , kcWΛ2 , k2mΛ2 and anΛ2 .

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      "title": "Analysis of anomalous quartic WWZ\u03b3 couplings in \u03b3p collision at the LHC"
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      "source": "Elsevier", 
      "value": "Gauge boson self-couplings are exactly determined by the non-Abelian gauge nature of the Standard Model (SM), thus precision measurements of these couplings at the LHC provide an important opportunity to test the gauge structure of the SM and the spontaneous symmetry breaking mechanism. It is a common way to examine the physics of anomalous quartic gauge boson couplings via effective Lagrangian method. In this work, we investigate the potential of the process pp\u00e2\u0086\u0092p\u00ce\u00b3p\u00e2\u0086\u0092pWZqX to analyze anomalous quartic WWZ\u00ce\u00b3 couplings by two different, CP-violating and CP-conserving, effective Lagrangians at the LHC. We calculate 95% confidence level limits on the anomalous coupling parameters with various values of the integrated luminosity. Our numerical results show that the best limits obtained on the anomalous couplings k0W\u00ce\u009b2 , kcW\u00ce\u009b2 , k2m\u00ce\u009b2 and an\u00ce\u009b2 at s=14\u00c2 TeV and an integrated luminosity of Lint=100\u00c2 fb\u00e2\u0088\u00921 are [\u00e2\u0088\u00921.37;1.37]\u00c3\u009710\u00e2\u0088\u00926\u00c2 GeV\u00e2\u0088\u00922 , [\u00e2\u0088\u00921.88;1.88]\u00c3\u009710\u00e2\u0088\u00926\u00c2 GeV\u00e2\u0088\u00922 , [\u00e2\u0088\u00926.55;6.55]\u00c3\u009710\u00e2\u0088\u00927\u00c2 GeV\u00e2\u0088\u00922 and [\u00e2\u0088\u00922.21;2.21]\u00c3\u009710\u00e2\u0088\u00926\u00c2 GeV\u00e2\u0088\u00922 , respectively. Thus, \u00ce\u00b3p mode of photon-induced reactions at the LHC highly improves the sensitivity limits of the anomalous coupling parameters k0W\u00ce\u009b2 , kcW\u00ce\u009b2 , k2m\u00ce\u009b2 and an\u00ce\u009b2 ."
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Published on:
22 January 2015
Publisher:
Elsevier
Published in:
Physics Letters B (2015)

DOI:
https://doi.org/10.1016/j.physletb.2015.01.022
Copyrights:
The Authors
Licence:
CC-BY-3.0

Fulltext files: