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The study of the properties of the top quark is one of the main goals of the Large Hadron Collider (LHC) physics program. The experimental precision expected at the LHC requires the calculation of several top-quark related observables…

High Energy Physics - Phenomenology · Physics 2014-11-20 R. Bonciani , A. Ferroglia

We present an analysis of the heavy quark structure functions from the $k_{t}$ factorization scheme, using unifying the color dipole picture and double asymptotic scaling approaches at small $x$. The gluon distribution is obtained from the…

High Energy Physics - Phenomenology · Physics 2024-03-12 G. R. Boroun

The deep inelastic scattering mode of $t\overline{t}$ pair production at the proposed LHeC and FCC-eh is considered. We present a method to extract the top reduced cross section related to the transversal structure function $F_{2}(x,Q^{2})$…

High Energy Physics - Phenomenology · Physics 2020-07-07 B. Rezaei , G. R. Boroun

We review a Soft Collinear Effective Theory approach to the study of factorization and resummation of QCD effects in top-quark pair production. In particular, we consider differential cross sections such as the top-quark pair invariant mass…

High Energy Physics - Phenomenology · Physics 2014-09-16 Andrea Ferroglia , Simone Marzani , Ben D. Pecjak , Li Lin Yang

In this talk I present the total cross sections, accurate at the NLO in QCD, for rare Standard-Model hadroproduction processes involving multi-Higgs-boson, multi-electroweak-boson and multi-top-quark final states. The comparison between…

High Energy Physics - Phenomenology · Physics 2014-07-08 Paolo Torrielli

We discuss several mechanisms of heavy quark production in (real) photon-nucleon and (real) photon - (real) photon collisions. In particular we focuse on application of the Saturation Model. We discuss how to generalize the formula from…

High Energy Physics - Phenomenology · Physics 2011-01-25 A. Szczurek

Possibilities for detecting heavy Majorana neutrinos ($N$'s) at future $e{\mu}$ colliders are investigated. In contrast to the $e^-e^+$ colliders (LEP200 and NLC), the center-of-mass (CMS) energies achieved at $e{\mu}$ colliders can be much…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Cvetic , C. S. Kim

Heavy quark production in multijet events at $e^+e^-$ colliders is studied at tree level. Total production rates are given and compared with the corresponding results for massless quarks. A new method of computing helicity amplitudes is…

High Energy Physics - Phenomenology · Physics 2009-09-25 Alessandro Ballestrero , Ezio Maina , Stefano Moretti

Heavy quark production has been very well studied over the last years both theoretically and experimentally. Theory has been used to study heavy quark production in $e p$ collisions at HERA, in $pp$ collisions at Tevatron and at RHIC, in…

High Energy Physics - Phenomenology · Physics 2014-11-20 V. P. Goncalves , M. S. Kugeratski , F. S. Navarra

The large amount of data recorded with the ATLAS detector at the Large Hadron Collider, corresponding to 140 fb$^{-1}$ of $pp$ collisions at a centre-of-mass energy of $\sqrt{s}=13$ TeV, has brought our knowledge of the top quark to a…

High Energy Physics - Experiment · Physics 2025-04-22 ATLAS Collaboration

We compute the inclusive and differential cross sections for the associated production of a top quark along with a charged Higgs boson at hadron colliders to next-to-leading order (NLO) in perturbative quantum chromodynamics (QCD) and in…

High Energy Physics - Phenomenology · Physics 2009-11-10 Edmond L Berger , Tao Han , Jing Jiang , Tilman Plehn

We have performed a systematic study of J/$\psi$ and $\psi$(2S) production in p--p collisions at different Large Hadron Collider (LHC) energies and at different rapidities using the leading order non-relativistic quantum chromodynamics…

High Energy Physics - Phenomenology · Physics 2022-10-11 Biswarup Paul , Mahatsab Mandal , Pradip Roy , Sukalyan Chattapadhyay

The energy loss of hard jets produced in the Deep-Inelastic scattering (DIS) off a large nucleus is considered in the collinear limit. In particular, the single gluon emission cross section due to multiple scattering in the medium is…

Nuclear Theory · Physics 2013-05-30 Abhijit Majumder

Within the framework of nonrelativistic quantum chromodynamics, this study examines the electroproduction processes $e+p\to e+B_c+\overline{c}+b$, $e+p\to e+B_s+\overline{s}+b$, and $e+p\to e+D_s+\overline{c}+s$ at lepton-hadron colliders.…

High Energy Physics - Phenomenology · Physics 2025-01-03 Qiwei Hu , Cong-Feng Qiao , Li-Ping Sun

In this paper, we carry out a detailed study on the production of the doubly charmed baryon in deeply inelastic $ep$ scattering (DIS) for $Q^2\in[2, 100]~\textrm{GeV}^2$, at the Large Hadron Electron Collider (LHeC) with $E_e=60(140)$ GeV…

High Energy Physics - Phenomenology · Physics 2020-07-07 Zhan Sun , Xing-Gang Wu

Evidence for the production of top quarks in heavy ion collisions is reported in a data sample of lead-lead collisions recorded in 2018 by the CMS experiment at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{_{\mathrm{NN}}}} =$ 5.02…

Nuclear Experiment · Physics 2022-08-26 Luis F. Alcerro

We study the potential of future lepton colliders to probe violation of the CP symmetry in the top quark sector. In certain extensions of the Standard Model, such as the two-Higgs-doublet model (2HDM), sizeable anomalous top quark dipole…

High Energy Physics - Experiment · Physics 2018-04-04 W. Bernreuther , L. Chen , I. García , M. Perelló , R. Poeschl F. Richard , E. Ros , M. Vos

The Future Circular Collider (FCC) design study is aimed at assessing the physics potential and the technical feasibility of a new collider with centre-of-mass energies, in the hadron-hadron collision mode including proton and nucleus…

Measurements are presented of differential cross-sections for top quark pair production in pp collisions at sqrt(s) = 7 TeV relative to the total inclusive top quark pair production cross-section. A data sample of 2.05/fb recorded by the…

High Energy Physics - Experiment · Physics 2013-06-11 ATLAS Collaboration

We evaluate the cross sections for new heavy fermion production at three Large Hadron Collider energies accurate to next-to-leading order in perturbative quantum chromodynamics. We treat the cases of pair production of heavy quarks via…

High Energy Physics - Phenomenology · Physics 2015-03-13 Edmond L. Berger , Qing-Hong Cao