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We discuss heavy quark production in High Parton Density QCD in quasi-classical approximation and including low-$x$ quantum evolution. We also consider an alternative approach based on the effect of pair production in external fields.

High Energy Physics - Phenomenology · Physics 2009-11-11 Kirill Tuchin

We recall that the exclusive production of high mass objects via \gamma\gamma fusion at the LHC is not strongly suppressed in comparison with inclusive \gamma\gamma fusion. Therefore it may be promising to study new objects produced by the…

High Energy Physics - Phenomenology · Physics 2016-03-23 A. D. Martin , M. G. Ryskin

We present the main results of our recent analyses of exclusive production of vector charmonia ($J/\psi$ and $\psi'$) in $k_t$-factorization approach and for $\gamma \gamma$ production of charged dilepton pairs in exclusive and…

High Energy Physics - Phenomenology · Physics 2016-07-20 Antoni Szczurek , Anna Cisek , Marta Luszczak , Wolfgang Schafer

The LHC provides new opportunities to improve our understanding of the b quark using high statistics data samples and the 14 TeV center-of-mass energy. The prospects to measure the cross section for inclusive b production in events…

High Energy Physics - Experiment · Physics 2007-06-14 Valery P. Andreev

We report on the perspective measurements of inclusive particle production in high-energy p-p collisions with data to be collected by the LHCb experiment at CERN's LHC. These include V0 and D meson production studies, which can be based on…

High Energy Physics - Experiment · Physics 2009-10-01 Francesco Dettori

Sizable amount of heavy-quarkonium events can be produced through $W$-boson decays at the LHC. Such channels will provide a suitable platform to study the heavy-quarkonium properties. The "improved trace technology", which disposes the…

High Energy Physics - Phenomenology · Physics 2012-07-27 Qi-Li Liao , Xing-Gang Wu , Jun Jiang , Zhi Yang , Zhen-Yun Fang , Jia-Wei Zhang

The central exclusive production of charged-hadron pairs in pp collisions at a centre-of-mass energy of 13 TeV is examined, based on data collected in a special high-$\beta^*$ run of the LHC. The nonresonant continuum processes are studied…

High Energy Physics - Experiment · Physics 2024-06-19 CMS , TOTEM Collaborations

We study exclusive production of scalar $\chi_{c0}\equiv \chi_c(0^{++})$ and pseudoscalar $\eta_c$ charmonia states in proton-proton collisions at the LHC energies. The amplitudes for $gg \to \chi_{c0}$ as well as for $gg \to \eta_c$…

High Energy Physics - Phenomenology · Physics 2021-01-04 Izabela Babiarz , Roman Pasechnik , Wolfgang Schäfer , Antoni Szczurek

Due to the heavy-quark symmetry of Non-Relativistic Quantum Chromodynamics (NRQCD), the cross-section for the production of $\eta_c$ can be predicted. This NRQCD prediction when confronted with data from the LHCb is seen to fail miserably.…

High Energy Physics - Phenomenology · Physics 2023-05-31 Sudhansu S. Biswal , Sushree S. Mishra , K. Sridhar

We present our results for the exclusive electroproduction of pions off nucleons and nuclei at high values of $Q^2$. In electroproduction of nuclei $A(e,e'\pi)$ we consider the Color Transparency (CT) effect recently observed at JLAB. It is…

Nuclear Theory · Physics 2011-03-09 Murat M. Kaskulov , Ulrich Mosel

The paper presents analysis of the single top quark production in PbPb collisions at the Large Hadron Collider at center-of-mass energy 5.5 TeV per nucleon pair. The analysis is performed with CompHEP and PYQUEN event generators. The…

High Energy Physics - Phenomenology · Physics 2015-10-16 A. V. Baskakov , E. E. Boos , L. V. Dudko , I. P. Lokhtin , A. M. Snigirev

We study the photoproduction of the heavy quarkonium at the future International Linear Collider (ILC) within the nonrelativistic QCD theory. We focus on the production channel via the subprocess $\gamma\gamma \to |[Q\bar{Q'}]_{\bf…

High Energy Physics - Phenomenology · Physics 2014-10-30 Gu Chen , Xing-Gang Wu , Hai-Bing Fu , Hua-Yong Han , Zhan Sun

High-energy photon-proton interactions at the LHC offer interesting possibilities for the study of the electroweak sector up to TeV scale and searches for processes beyond the Standard Model. An analysis of the W associated single top…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. de Favereau de Jeneret , S. Ovyn

We calculate the amplitude of gg->bb(bar) production for the colour singlet, J_z=0 di-gluon state at O(\alpha_S^2) order. We consider the cancellation, and a realistic cutoff, of the infrared divergent terms. We show that the one-loop…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. G. Shuvaev , V. A. Khoze , A. D. Martin , M. G. Ryskin

Central exclusive Higgs boson production, pp -> p+H+p, at the LHC can provide important complementary contribution to the comprehensive study of the Higgs sector in a remarkably clean topology. The bb(bar) Higgs decay mode is especially…

High Energy Physics - Phenomenology · Physics 2009-11-10 V. A. Khoze , M. G. Ryskin , A. D. Martin

We study single production and detection at the LHC run II of exotic partners of the bottom quark. For masses larger than 1 TeV single production can dominate over pair production that is suppressed due to phase space. The presence of…

High Energy Physics - Phenomenology · Physics 2015-06-17 Ezequiel Alvarez , Leandro Da Rold , Juan Ignacio Sanchez Vietto

We present the results of our analysis on charmonia ($J/\psi$ and $\psi'$) hadroproduction taking into account higher-order QCD effects induced by initial-state radiation in a Monte Carlo framework, with the colour-octet mechanism…

High Energy Physics - Phenomenology · Physics 2009-10-30 Miguel A. Sanchis-Lozano , Beatriz Cano-Coloma

Top squark (stop) can be produced via QCD interaction but also the electroweak interaction at the LHC. In this paper, we investigate the observability of the associated production of stop and chargino, $pp \to \tilde{t}_1\tilde{\chi}^-_1$,…

High Energy Physics - Phenomenology · Physics 2017-04-05 Guang Hua Duan , Ken-ichi Hikasa , Lei Wu , Jin Min Yang , Mengchao Zhang

We discuss top-quark pair production at hadron colliders and review available calculations of differential top-pair production cross section in perturbative QCD at approximate next-to-next-to-leading order (NNLO) within the threshold…

High Energy Physics - Phenomenology · Physics 2013-08-08 Marco Guzzi , Katerina Lipka , Sven-Olaf Moch

We propose to investigate a largely unexplored sector that is unique to the formulation of hard exclusive processes in terms of GPDs, namely the electroproduction of strange and charmed mesons in the kinematical ranges of Jefferson Lab's 12…

High Energy Physics - Phenomenology · Physics 2010-09-08 Gary Goldstein , Simonetta Liuti