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The production process of quarkonia in proton-proton (pp) collision is a very good probe of the parton structure of the proton. Recent experimental data of the production of J/psi+vector boson or quarkonium pairs at the LHC and Tevatron…

High Energy Physics - Phenomenology · Physics 2018-08-30 Nodoka Yamanaka , Jean-Philippe Lansberg , Hua-Sheng Shao , Yu-Jie Zhang

We discuss the production mechanism of fully charm tetraquark, observed recently by the LHCb at M = 6.9 GeV in the $J/\psi J/\psi$ channel. Both single parton scattering (SPS) and double parton scattering (DPS) mechanisms are considered. We…

High Energy Physics - Phenomenology · Physics 2021-07-29 A. Szczurek , R. Maciuła , W. Schäfer

We discuss the double-parton scattering (DPS) effects in four-jet production at the LHC. A special attention is given to the optimization of kinematical conditions in order to enhance the relative contribution of DPS in four-jet sample. The…

High Energy Physics - Phenomenology · Physics 2016-06-30 Rafal Maciula , Antoni Szczurek

Production measurements of charm hadrons, particularly the yield ratios of different hadron species as a function of the transverse momentum, are important to study the charm hadronisation mechanism. In this contribution, measurements of…

High Energy Physics - Experiment · Physics 2024-12-31 Tiantian Cheng

A study of double charmed meson production in proton-proton and proton-nucleus collisions at the LHC energies is performed. Based on the color dipole formalism developed in the transverse momentum representation and the double parton…

High Energy Physics - Phenomenology · Physics 2023-09-15 G. Sampaio dos Santos , G. Gil da Silveira , M. V. T. Machado

We present predictions for the double parton scattering (DPS) four-jet production cross sections in $pA$ collisions at the LHC. Relying on the experimental capabilities to correlate centrality with impact parameter $B$ of the proton-nucleus…

High Energy Physics - Phenomenology · Physics 2020-06-24 B. Blok , F. A. Ceccopieri

We consider the simultaneous production of two heavy-flavoured hadrons - particularly D mesons - at the LHC. We base our calculations on collinearly factorized QCD at next-to-leading order, using the contemporary parton distribution…

High Energy Physics - Phenomenology · Physics 2020-01-08 Ilkka Helenius , Hannu Paukkunen

We present recent results on heavy flavour production at Tevatron Run II for typically ~1/fb of analysed proton-antiproton data at a c.m. energy of 1.96 TeV. This includes results on single and correlated open charm and bottom cross…

High Energy Physics - Experiment · Physics 2019-08-13 Jonas Rademacker

We review the hadro-production data presently available on open charm and beauty absolute production cross-sections, collected by experiments at CERN, DESY and Fermilab. The published charm production cross-section values are updated, in…

High Energy Physics - Phenomenology · Physics 2008-11-26 C. Lourenco , H. K. Wohri

We discuss a few examples of rich newly developing field of double parton scattering. We start our presentation from production of two pairs of charm quark-antiquark and argue that it is the golden reaction to study the double parton…

High Energy Physics - Phenomenology · Physics 2015-10-28 Antoni Szczurek

This review is devoted to the study of charm production in ep and pp collisions. The total set of measurements obtained by the two collaborations H1 and ZEUS from HERA and their combination is outlined, as well as complementary data…

High Energy Physics - Experiment · Physics 2017-03-16 Oleksandr Zenaiev

The production of $D^{*\pm}$, $D^\pm$ and $D_s^\pm$ charmed mesons has been measured with the ATLAS detector in $pp$ collisions at $\sqrt{s}=7$ TeV at the LHC, using data corresponding to an integrated luminosity of $280\,$nb$^{-1}$. The…

High Energy Physics - Experiment · Physics 2016-06-13 ATLAS Collaboration

A search for WW production from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-of-mass energy of 13 TeV. The analyzed data set…

High Energy Physics - Experiment · Physics 2020-01-24 CMS Collaboration

Recent measurements of charm-baryon production in proton-proton collisions at the LHC have found a surprisingly large yield relative to those of $D$-mesons. We propose that this observation can be explained by the statistical hadronization…

Nuclear Theory · Physics 2019-07-24 Min He , Ralf Rapp

We investigate charm production in an equilibrated quark-gluon plasma produced in heavy-ion collisions at RHIC and LHC. Effective quark and gluon masses are introduced from thermal QCD calculations. Assuming a Bjorken-type longitudinal…

High Energy Physics - Phenomenology · Physics 2008-11-26 Peter Levai , Ramona Vogt

Measurements of dilepton production from charm decay and Drell-Yan processes respectively probe the gluon and sea quark distributions in hadronic collisions. In nucleus-nucleus collisions, these hard scattering processes constitute a…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Gavin , P. L. McGaughey , P. V. Ruuskanen , R. Vogt

A review is given of the QCD corrections to charm quark production in deep inelastic electron-proton scattering. An outline of the computation of the virtual photon-parton subprocesses, from which one obtains the heavy quark coefficient…

High Energy Physics - Phenomenology · Physics 2011-04-15 W. L. van Neerven

We calculate the rate of double open charm production in the forward kinematics studied recently in the LHCb experiment. We find that the mean field approximation for the double parton GPD (Generalized parton distributions), which neglects…

High Energy Physics - Phenomenology · Physics 2017-02-01 B. Blok , M. Strikman

Results from a phenomenological analysis for diffractive hadroproduction of heavy flavors at high energies are reported. Diffractive production of charm, bottom and top are calculated using Regge factorization, taking into account recent…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. V. T. Machado

Quarkonium production in proton-proton collision is interesting in profiling the partons inside the nucleon. Recently, the impact of double parton scatterings (DPSs) was suggested by experimental data of associated quarkonium production…

High Energy Physics - Phenomenology · Physics 2020-01-08 Nodoka Yamanaka , Jean-Philippe Lansberg , Hua-Sheng Shao , Yu-Jie Zhang