Browsing by Author "Hayreter, Alper"
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Color-octet scalar decays to a gluon and an electroweak gauge boson in the Manohar-Wise model
Hayreter, Alper; Valencia, G. (American Physical Society, 2020-12-28)We present one loop results for the amplitudes giving rise to couplings between a color octet scalar, a gluon, and an electroweak gauge boson. These amplitudes could signal new physics in( )gamma jet, Z jet and W jet ... -
CP violation in h → ττ and LFV h → μτ
Hayreter, Alper; He, H.-G.; Valencia, G. (Elsevier, 2016-09-10)The CMS Collaboration has reported a possible lepton flavor violating (LFV) signal h→μτ. Whereas this does not happen in the standard model (SM), we point out that new physics responsible for this type of decay would, in ... -
Higgs production constraints on anomalous fermion couplings
Hayreter, Alper; Valencia, G. (Elsevier, 2016)Certain anomalous fermion-gauge boson couplings, such as the flavor diagonal anomalous color magnetic (CMDM) and color electric (CEDM) dipole moments of quarks are not fully gauge invariant under the SM. Restoring gauge ... -
Investigating the violation of charge-parity symmetry through top-quark chromoelectric dipole moments by using machine learning techniques
Işıldak, B.; Hudaverdi, M.; Ilgın, F.; Hayreter, Alper; Salva, S.; Şimşek, E.; Guyer, S. (Jagiellonian University, 2023)There are a number of studies in the literature on the search for Charge- Parity (CP) violating signals in top-quark productions at the LHC. In most of these studies, ChromoMagnetic Dipole Moments (CMDM) and ChromoElectric ... -
LHC constraints on color octet scalars
Hayreter, Alper; Valencia, G. (American Physical Society, 2017-08-09)We extract constraints on the parameter space of the Manohar and Wise model by comparing the cross sections for dijet, top-pair, dijet-pair,t (t) over bart (t) over bar and b (b) over barb (b) over bar productions at the ... -
LHC constraints on W′, Z′ that couple mainly to third generation fermions
Hayreter, Alper; He, X. G.; Valencia, G. (Springer Nature, 2020-11-03)We use the results of CMS and ATLAS searches for resonances that decay to tau nu or tb and tau(+)tau(-) or t (t) over bar final states to constrain the parameters of non-universal W' and Z' gauge bosons that couple ... -
Spin correlations and new physics in τ -lepton decays at the LHC
Hayreter, Alper; Valencia, G. (Springer International Publishing, 2015-07)We use spin correlations to constrain anomalous τ -lepton couplings at the LHC including its anomalous magnetic moment, electric dipole moment and weak dipole moments. Single spin correlations are ideal to probe interference ... -
T-odd correlations from the top-quark chromoelectric dipole moment in lepton plus jets top-pair events
Hayreter, Alper; Valencia, G. (American Physical Society, 2016-01-01)There exist several recent studies of the top-quark chromoelectric dipole moment (CEDM) in the context of searching for charge parity violating signals in top-quark pair production at the LHC. Most of these studies constrain ... -
Top-quark forward-backward asymmetry from a color-octet t-channel resonance
Cheng, L.; Hayreter, Alper; Valencia, G. (American Physical Society, 2014-05-09)We consider new physics contributions to the top-quark forward-backward asymmetry from a neutral V-8(0) or charged V-8(+) color-octet vector exchanged in the t channel. We study the phenomenological constraints on these ... -
Yukawa sector for lepton flavor violating in h -> mu tau and CP violation in h -> tau tau
Hayreter, Alper; He, X.-G.; Valencia, G. (American Physical Society, 2016-10-01)The Higgs boson discovered at the LHC opened a new chapter for particle physics. Its properties need to be studied in detail to distinguish a purely standard model (SM) Higgs boson from one of many scalars in an enlarged ...
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