Yazar "Ari, V." seçeneğine göre listele

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    Expected sensitivity on the anomalous quartic neutral gauge couplings in γγ collisions at the CLIC
    (Springer Heidelberg, 2023) Gutierrez-Rodriguez, A.; Gurkanli, E.; Koksal, M.; Ari, V.; Hernandez-Ruiz, M. A.
    The non-Abelian gauge structure of the Standard Model (SM) implies the presence of multi-boson self-interactions. Precise measurements of these interactions allow testing the nature of the SM and new physics contributions arising from the beyond SM. The investigation of these interactions can be approached in a model-independent manner using an effective theory approach, which forms the main motivation of this study. In this paper, we examine the anomalous neutral quartic gauge couplings through the process yy -> ZZ at the Compact Linear Collider with the center-of-mass energy of =3 TeV and integrated luminosity of =5 a-1. The anomalous neutral quartic gauge couplings are implemented into FeynRules to generate a UFO module inserted into Madgraph to create background and signal events. These events are passed through Pythia 8 for parton showering and Delphes to include realistic detector effects. We obtain that the sensitivities on the anomalous quartic neutral gauge couplings with 95% Confidence Level are given as: 0/Lambda 4=[-1.06;1.08]x10-3 TeV-4, 1/Lambda 4=[-1.06;1.08]x10-3 TeV-4,2/Lambda 4=[-1.06;1.08]x10-3 TeV-4,0/Lambda 4=[-1.06;1.08]x10-3 TeV-4, 5/Lambda 4=[-4.08;4.08]x10-4 TeV-4 and 8/Lambda 4=[-1.10;1.10]x10-4 TeV-4. Our results on the anomalous quartic neutral gauge couplings are set to a more stringent sensitivity concerning the recent experimental limits
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    Model independent study for the anomalous quartic WW γγ couplings at future electron-proton colliders
    (Elsevier, 2020) Ari, V.; Gurkanli, E.; Billur, A. A.; Koksal, M.
    The Large Hadron Electron Collider and the Future Circular Collider-hadron electron with high centerof-mass energy and luminosity allow to better understand the Standard Model and to examine new physics beyond the Standard Model in the electroweak sector. Multi-boson processes permit for a measurement of the gauge boson self-interactions of the Standard Model that can be used to determine the anomalous gauge boson couplings. For this purpose, we present a study of the process ep -> nu(e)gamma gamma j at the Large Hadron Electron Collider with center-of-mass energies of 1.30, 1.98 TeV and at the Future Circular Collider-hadron electron with center-of-mass energies of 7.07, 10 TeV to interpret the anomalous quartic WW gamma gamma gauge couplings using a model independent way in the framework of effective field theory. We obtain the sensitivity limits at 95% Confidence Level on 13 different anomalous couplings arising from dimension-8 operators. The best limit in f(Mi)/Lambda(4)(i= 0, 1, 2, 3, 4, 5, 7) parameters is obtained for fM(2)/Lambda(4)parameter while the best sensitivity derived on fTi/Lambda(4)(i= 0, 1, 2, 5, 6, 7) parameters is obtained for f(T5)/Lambda(4). In addition, this study is the first report on the anomalous quartic couplings determined by effective Lagrangians at epcolliders. (C) 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
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    Study on the anomalous quartic W+W- γγ couplings of electroweak bosons in e- p collisions at the LHeC and the FCC-he
    (Springer, 2021) Gutierrez-Rodriguez, A.; Hernandez-Ruiz, M. A.; Gurkanli, E.; Ari, V.; Koksal, M.
    In this paper, a study is carried out on the e(-) p -> e(-) gamma* p -> pW(-) gamma nu(e) production to probe quartic W+ W- gamma gamma couplings at the Large Hadron electron Collider (LHeC) with root s = 1.30, 1.98 TeV and at the Future Circular Collider-hadron electron (FCC-he) with root s = 3.46, 5.29 TeV. Production cross-sections are determined for both at leptonic and hadronic decay channels of the W-boson. With the data from future e(-) p colliders, it is possible to obtain sensitivity measures at 95% C.L. on the anomalous f(M,i)/Lambda(4) and f(T, j)/Lambda(4) couplings which are competitive with the limits obtained by the LHC, as well as with others limits reported in the literature. The production mode e(-) p -> e(-) gamma* p -> pW(-) gamma nu(e) in e(-) p collisions offers a window for study the quartic W+ W- gamma gamma electroweak bosons couplings at the LHeC and the FCC-he, which provides a much cleaner collision environment than the LHC.