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Within the framework of nonrelativistic-QCD (NRQCD) factorization, we perform a comprehensive investigation of the color singlet (CS) contribution to prompt $J/\psi$ pair production at the CERN Large Hadron Collider at next-to-leading order…

High Energy Physics - Phenomenology · Physics 2025-05-08 Zhi-Guo He , Xiao-Bo Jin , Bernd A. Kniehl

We calculate the photon production cross section arising from the hard scattering of partons in nucleon-nucleon collisions by taking into account the intrinsic parton transverse momentum distribution and the next-to-leading-order…

High Energy Physics - Phenomenology · Physics 2008-11-26 Cheuk-Yin Wong , Hui Wang

The CMS experiment at the Large Hadron Collider has recently presented data on the average transverse momentum of protons, kaons and pions as a function of particle multiplicity. We relate the particle multiplicity to saturation momentum…

High Energy Physics - Phenomenology · Physics 2015-06-16 Larry McLerran , Michal Praszalowicz , Bjoern Schenke

We calculate the next-to-leading order QCD corrections to the `direct' part of the spin-dependent cross section for single-inclusive charged-hadron photoproduction. This process could be studied experimentally in future polarized…

High Energy Physics - Phenomenology · Physics 2011-07-19 D. de Florian , W. Vogelsang

The forthcoming LHC measurements in proton-nucleus (pA) collisions at forward rapidities can discriminate between the color glass condensate (CGC) and alternative approaches including standard collinear factorization one. We report some of…

High Energy Physics - Phenomenology · Physics 2013-10-17 Amir H. Rezaeian

We re-evaluate the nuclear suppression of forward $J/\psi$ production at high energy in the Color Glass Condensate framework. We use the collinear approximation for the projectile proton probed at large $x$ and an up to date dipole cross…

High Energy Physics - Phenomenology · Physics 2015-09-17 B. Ducloué , T. Lappi , H. Mäntysaari

We compute the differential cross-section for inclusive prompt photon production in deeply inelastic scattering (DIS) of electrons on nuclei at small $x$ in the framework of the Color Glass Condensate (CGC) effective theory. The leading…

High Energy Physics - Phenomenology · Physics 2018-05-08 Kaushik Roy , Raju Venugopalan

In this paper we investigate the hadron and photon production at forward rapidities in $pp$ and $pA$ collisions considering two phenomenological models based on the Color Glass Condensate formalism. The predictions of these models for the…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. A. Betemps , V. P. Goncalves

Using the unintegrated gluon distribution obtained from numerical simulations of the Balitsky-Kovchegov equation with running coupling, we obtain a very good description of RHIC data on single inclusive hadron production at forward…

High Energy Physics - Phenomenology · Physics 2010-05-28 Javier L. Albacete , Cyrille Marquet

At very high energies or small values of Bjorken x, the density of partons, per unit transverse area, in hadronic wavefunctions becomes very large leading to a saturation of partonic distributions. When the scale corresponding to the…

High Energy Physics - Phenomenology · Physics 2016-11-23 Edmond Iancu , Raju Venugopalan

We consider the production of isolated prompt photons in hadronic collisions. We present a general discussion in QCD perturbation theory of the isolation criterion used by hadron collider experiments. The isolation criterion is implemented…

High Energy Physics - Phenomenology · Physics 2009-11-07 S. Catani , M. Fontannaz , J. Ph. Guillet , E. Pilon

We compute in next-to-leading order (NLO) perturbative QCD the transverse energy carried into the central rapidity unit of hadron or nuclear collisions by the partons freed in the few-GeV subcollisions. The formulation is based on a…

High Energy Physics - Phenomenology · Physics 2014-11-17 K. J. Eskola , K. Tuominen

We consider QCD radiative corrections to vector-boson production in hadron collisions. We present the next-to-next-to-leading order (NNLO) result of the hard-collinear coefficient function for the all-order resummation of…

High Energy Physics - Phenomenology · Physics 2015-06-11 S. Catani , L. Cieri , D. de Florian , G. Ferrera , M. Grazzini

We calculate the one-loop corrections to dihadron production in Deep Inelastic Scattering (DIS) at small x using the Color Glass Condensate formalism. We show that all UV and soft singularities cancel while the collinear divergences are…

High Energy Physics - Phenomenology · Physics 2022-10-12 Filip Bergabo , Jamal Jalilian-Marian

We present a detailed phenomenological study of spin-dependent single-inclusive high-p_T hadron photoproduction with particular emphasis on the kinematics relevant for the Compass and Hermes fixed-target experiments. We carefully examine…

High Energy Physics - Phenomenology · Physics 2009-01-07 B. Jager , M. Stratmann , W. Vogelsang

We investigate QCD effects in the production of a single slepton at hadron colliders in the Minimal Supersymmetric Standard Model without R-parity. We calculate the total cross sections and the transverse momentum distributions at…

High Energy Physics - Phenomenology · Physics 2009-11-11 Li Lin Yang , Chong Sheng Li , Jian Jun Liu , Qiang Li

We investigate the low transverse momentum heavy quarkonium ($J/\psi$, $\Upsilon$) productions in the forward rapidity region of $pp$ and $pA$ collisions at the LHC as an important probe to the transverse momentum tomography of the gluons…

High Energy Physics - Phenomenology · Physics 2015-12-23 Kazuhiro Watanabe , Bo-Wen Xiao

The particle production at very forward rapidities is expected to be sensitive to the non-linear effects in the QCD dynamics at high energies. In this paper we present, for the first time, the predictions of the Color Dipole formalism for…

High Energy Physics - Phenomenology · Physics 2020-07-15 V. P. Goncalves , G. Sampaio dos Santos , C. R. Sena

We review recent results for forward jests at the LHC and EIC as obtained within small-x Improved Transverse Momentum Dependent factorization (ITMD). In addition to elementary overview of various approaches to perturbative QCD at high…

High Energy Physics - Phenomenology · Physics 2023-07-03 A. van Hameren , H. Kakkad , P. Kotko , K. Kutak , S. Sapeta

We compute the next-leading-order cross-sections for diffractive electro- or photoproduction of a pair of hadrons with large $p_T$, out of a nucleus or a nucleon. A hybrid factorization is used, mixing collinear and small-$x$…

High Energy Physics - Phenomenology · Physics 2022-11-09 Michael Fucilla , Andrey V. Grabovsky , Lech Szymanowski , Emilie Li , Samuel Wallon