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Observation of top quark flavor changing neutral process $t\to c +\gamma$ at the LHC would be the signal of physics beyond the Standard Model. If anomalous $t\to c\gamma$ coupling exists, it will affect the precisely measured…

High Energy Physics - Phenomenology · Physics 2011-02-01 Xing-Bo Yuan , Yang Hao , Ya-Dong Yang

In this work we study the constraints on the anomalous $tq\gamma$ ($q=u$, $c$) couplings by photon-produced leading single top production and single top jet associated production through the main reaction $pp\rightarrow p\gamma p\rightarrow…

High Energy Physics - Phenomenology · Physics 2014-07-29 Hao Sun

Parameterization of heavy effects beyond the Standard Model is available using higher-dimension operators of the effective field theory and their Wilson coefficients, where their values are not known. Experimental sensitivity to the Wilson…

High Energy Physics - Phenomenology · Physics 2024-05-07 Artur E. Semushin , Evgeny Yu. Soldatov

The measurement of the triple gauge couplings (TGCs) is a central part of diboson studies at the LHC. In this letter we consider the $Z\gamma$ process and include anomalous TGCs (aTGCs) in the event generation at next-to-next-to-leading…

High Energy Physics - Phenomenology · Physics 2021-12-22 Daniele Lombardi , Marius Wiesemann , Giulia Zanderighi

We study the anomalous $WW\gamma$ couplings at the Compact Linear Collider through the processes $e^{+}e^{-}\to W^+W^-$, $e^{-}e^{+} \to e^{-} \gamma^{*} e^{+} \to e^{+} \nu_{e} W^-$ and $e^{-}e^{+}\to e^{-} \gamma^{*} \gamma^{*} e^{+} \to…

High Energy Physics - Phenomenology · Physics 2016-03-18 V. Arı , A. A. Billur , S. C. İnan , M. Köksal

We study the anomalous FCNC $tq\gamma$ and $tqg$ couplings via $pp\to Wb\gamma+X$ signal process including realistic detector effects for both leptonic and hadronic decay channels of the W boson at 100 TeV FCC-hh. The relevant background…

High Energy Physics - Phenomenology · Physics 2019-01-30 K. Y. Oyulmaz , A. Senol , H. Denizli , A. Yilmaz , I. Turk Cakir , O. Cakir

We study anomalous couplings among neutral gauge bosons in $ZZ$ production at the LHC for $\sqrt{s}=13$ TeV in $4$-lepton final state. We use the cross section and polarization asymmetries of the $Z$ boson to estimate simultaneous limits on…

High Energy Physics - Phenomenology · Physics 2019-11-05 Rafiqul Rahaman , Ritesh K. Singh

We study the sensitivity of the ATLAS experiment to Wtb anomalous couplings in top pair production with semileptonic decay, pp -> t tbar -> W+ b W- bbar, with one of the W bosons decaying leptonically and the other hadronically. Several…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. A. Aguilar-Saavedra , J. Carvalho , N. Castro , A. Onofre , F. Veloso

The combination of the latest and most precise measurements of several top quark properties is presented in this paper in order to establish allowed regions on anomalous contributions to the Lorentz structure of the $Wtb$ vertex. These…

High Energy Physics - Phenomenology · Physics 2019-03-25 Frédéric Déliot , Miguel C. N. Fiolhais , António Onofre

Triple gauge boson associated production at the LHC serves as an interesting channel to test the robustness of the Standard Model. Any deviation from its SM prediction may indicate possible existence of relevant new physics, e.g., anomalous…

High Energy Physics - Phenomenology · Physics 2015-06-12 Daneng Yang , Yajun Mao , Qiang Li , Shuai Liu , Zijun Xu , Ke Ye

Measurements of distributions associated with the pair production of top quarks at the LHC can be used to constrain (or observe) the anomalous chromomagnetic dipole moment($\kappa$) of the top. For example, using either the $t\bar t$…

High Energy Physics - Phenomenology · Physics 2011-03-02 Thomas G. Rizzo

Anomalous moments of the top quark arises from one loop corrections to the vertices $\bar t t g$ and $\bar t t \gamma$. We study these anomalous couplings in different frameworks: effective theories, Standard Model and 2HDM. We use…

High Energy Physics - Phenomenology · Physics 2014-11-17 R. Martinez , N. Poveda , J. -Alexis Rodriguez

We investigate the sensitivity of the anomalous dimension-8 neutral triple gauge couplings via process $pp\to \nu\nu\gamma$ with fast detector simulation including pile-up effects for the post LHC experiments. The transverse momentum of the…

High Energy Physics - Phenomenology · Physics 2020-02-05 A. Senol , H. Denizli , A. Yilmaz , I. Turk Cakir , O. Cakir

We discuss how to perform consistent extractions of anomalous triple gauge couplings (aTGC) from electroweak boson pair production at the LHC in the Standard Model Effective Field Theory (SMEFT). After recasting recent ATLAS and CMS…

High Energy Physics - Phenomenology · Physics 2017-03-08 Adam Falkowski , Martin Gonzalez-Alonso , Admir Greljo , David Marzocca , Minho Son

Combined analysis of recent measured $\bs$ mixing and $B \to X_s \gamma$ decays provides constraints on the anomalous $\bar{t}sW$ couplings. We discuss the perspectives to examine the anomalous $\bar{t}sW$ couplings through CKM-suppressed $…

High Energy Physics - Phenomenology · Physics 2009-01-09 Jong Phil Lee , Kang Young Lee

We describe the most recent results from the Proton Precision Spectrometer from the CMS and TOTEM collaborations, namely the first observation of exclusive di-lepton production at high mass at the LHC, and the prospects concerning the…

High Energy Physics - Experiment · Physics 2020-07-02 C. Royon

Non-Abelian structure of the Standard Model predicts the self-interactions of gauge bosons triple gauge couplings (TGC) and quartic gauge couplings (QGC). On the other hand, it is also important to determine the deviations from Standard…

High Energy Physics - Phenomenology · Physics 2022-12-01 E. Gurkanli

We study in the effective Lagrangian approach the possibility of probing anomalous top quark charged current couplings in the single top production at a high energy e\gamma collider. We analyzed all possible dimension-six CP-conserving…

High Energy Physics - Phenomenology · Physics 2009-10-31 Jun-Jie Cao , Jian-Xiong Wang , Jin Min Yang , Bing-Lin Young , Xinmin Zhang

In this study, we investigate the potential of the process $pp\rightarrow p\gamma^{*} p\rightarrow p \tau \bar{\nu}_{\tau}q^{\prime} X$ at the LHC to examine the anomalous electromagnetic moments of the tau lepton. We obtain $95\%$…

High Energy Physics - Phenomenology · Physics 2018-07-24 M. Köksal , S. C. İnan , A. A. Billur , M. K. Bahar , Y. Özgüven

Evaluation of anomalous couplings in the $\gamma\gamma\to W^+W^-$ process needs to calculate the cross section $\sigma(W^+W^-)$ with a high precision. Therefore one has to consider the main contribution of high order effects. In this paper…

High Energy Physics - Phenomenology · Physics 2007-05-23 I. Marfin , V. Mossolov , T. Shishkina
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