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Charm production in pp collisions is considered in the framework of perturbative QCD. The values of two parameters, the charm quark mass $m_c$ and the QCD scale mu^2, are determined from the comparison of the theoretical calculations with…

High Energy Physics - Phenomenology · Physics 2011-03-17 C. Merino , C. Pajares , M. M. Ryzhinskiy , Yu. M. Shabelski , A. G. Shuvaev

We present a factorization framework that takes into account the production of heavy quarks through gluon splitting in the thrust distribution for e+ e- --> hadrons. The explicit factorization theorems and some numerical results are…

High Energy Physics - Phenomenology · Physics 2014-12-23 Andre H. Hoang , Vicent Mateu , Piotr Pietrulewicz

We investigate the thermal production of charm quarks in the strongly interacting quark-gluon plasma (sQGP) created in heavy-ion collisions at relativistic energies. Our study is based on the off-shell parton-hadron-string dynamics (PHSD)…

Nuclear Theory · Physics 2025-02-28 Taesoo Song , Ilia Grishmanovskii , Olga Soloveva , Elena Bratkovskaya

We discuss the description of the proton structure function within the dipole factorisation framework. We parametrise the forward dipole amplitude to account for saturation as predicted by the small-x QCD evolution equations. Contrarily to…

High Energy Physics - Phenomenology · Physics 2008-07-02 Gregory Soyez

We report on recent progress in calculating the three loop QCD corrections of the heavy flavor contributions in deep--inelastic scattering and the massive operator matrix elements of the variable flavor number scheme. Notably we deal with…

High Energy Physics - Phenomenology · Physics 2023-06-30 J. Ablinger , A. Behring , J. Blümlein , A. De Freitas , A. Goedicke , A. von Manteuffel , C. Schneider , K. Schönwald

The diffusion of heavy quarks through the quark-gluon plasma (QGP) as produced in high-energy heavy-ion collisions has long been recognized as an excellent probe of its transport properties. In addition, the experimentally observed…

High Energy Physics - Phenomenology · Physics 2023-04-05 Min He , Hendrik van Hees , Ralf Rapp

A detailed proof of hard scattering factorization is given with the inclusion of heavy quark masses. Although the proof is explicitly given for deep-inelastic scattering, the methods apply more generally The power-suppressed corrections to…

High Energy Physics - Phenomenology · Physics 2015-01-26 J. C. Collins

We develop the phenomenology of scenarios in which a dark matter candidate interacts with a top quark through flavour-changing couplings, employing a simplified dark matter model with an s-channel vector-like mediator. We study in detail…

High Energy Physics - Phenomenology · Physics 2016-04-20 Jorgen D'Hondt , Alberto Mariotti , Kentarou Mawatari , Seth Moortgat , Pantelis Tziveloglou , Gerrit Van Onsem

In this paper we estimate the double parton scattering (DPS) contribution for the heavy quark production in $pA$ collisions at the LHC. The cross sections for the charm and bottom production are estimated using the dipole approach and…

High Energy Physics - Phenomenology · Physics 2018-06-29 E. R. Cazaroto , V. P. Goncalves , F. S. Navarra

The status of the heavy quark expansion for inclusive B decays is briefly reviewed from the perspective of confronting theory with data and of extracting the heavy quark parameters. A good agreement between properly applied theory and new…

High Energy Physics - Phenomenology · Physics 2007-05-23 Nikolai Uraltsev

We present hadron-level predictions from the Monte Carlo generator Cascade and numerical calculations of charm and beauty production at the Fermilab Tevatron within the framework of the $k_T$-factorization QCD approach. Our consideration is…

High Energy Physics - Phenomenology · Physics 2011-01-25 H. Jung , M. Kraemer , A. V. Lipatov , N. P. Zotov

This paper is the first attempt to build CGC/saturation model based on the next-to-leading order corrections to linear and non-linear evolution in QCD. We assume that the renormalization scale is the saturation momentum and found that the…

High Energy Physics - Phenomenology · Physics 2016-12-28 Carlos Contreras , Eugene Levin , Rodrigo Meneses , Irina Potashnikova

We present predictions for the diffractive production of heavy quarks in deep-inelastic scattering and hadron-hadron collisions and for double diffractive dijet production in hadron-hadron collisions. With the assumption of hard scattering…

High Energy Physics - Phenomenology · Physics 2007-05-23 Lyndon Alvero , John C. Collins , J. J. Whitmore

Recent experimental results on the Lambda_c/D^0 ratio in proton-proton collisions have revealed a significant enhancement compared to expectations based on universal fragmentation fractions/functions across different colliding systems, from…

High Energy Physics - Phenomenology · Physics 2023-06-06 Andrea Beraudo , Arturo De Pace , Daniel Pablos , Francesco Prino , Marco Monteno , Marzia Nardi

We assess transport properties of heavy quarks in the Quark-Gluon Plasma (QGP) that show a strong non-perturbative behavior. A T-matrix approach based on a potential taken from lattice QCD hints at the presence of heavy-quark (HQ) resonant…

High Energy Physics - Phenomenology · Physics 2015-05-30 V. Greco , H. van Hees , R. Rapp

We argue that the color deconfinement in heavy ion collisions may lead to enhanced production of hadrons with open heavy flavor (charm or bottom). We estimate the upper bound of this enhancement.

High Energy Physics - Phenomenology · Physics 2009-11-07 A. P. Kostyuk , M. I. Gorenstein , W. Greiner

These lectures present a pedagogical introduction to the physics of heavy-flavour production in hadronic collisions. The first lecture gives the theoretical background, with a discussion of leading-order calculations and of the effects of…

High Energy Physics - Phenomenology · Physics 2009-09-25 M. L. Mangano

Production of final states containing open charm and beauty quarks at HERA is reviewed. Photoproduction (PHP) of the charm meson resonances D^*, D^0 and D_s, as well as D^* production in the deep inelastic scattering (DIS) regime, are…

High Energy Physics - Experiment · Physics 2014-11-17 Uri Karshon

Charmed and beauty hadrons in matter are discussed within a unitarized coupled-channel model consistent with heavy-quark spin symmetry. We analyse the formation of D-mesic states as well as the propagation of charmed and beauty hadrons in…

High Energy Physics - Phenomenology · Physics 2017-12-22 Laura Tolos

Heavy quarks serve as ideal probes of the QGP properties produced in energetic nuclear collisions, and provide a unique opportunity to study the mass effects on parton energy loss. We develop a multi-stage approach for heavy quark evolution…

Nuclear Theory · Physics 2019-02-07 Abhijit Majumder , Shanshan Cao , Chun Shen , Guang-You Qin