English
Related papers

Related papers: Inclusive double-quarkonium production at the Larg…

200 papers

Nonrelativistic QCD provides a systematic approach for inclusive decays and productions of a quarkonium. By taking color-octet components into account, the approach can explain the $\psi'$-anomaly at Tevatron, where the measured production…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. Y. Liu , J. P. Ma , X. G. Wu

We present the study of accessing unpolarized and linearly polarized gluon TMDs in J/{\psi} and {\Upsilon}(1S) production in unpolarized proton-proton collision at LHC, RHIC and AFTER energies. Non- relativistic QCD based color octet model…

High Energy Physics - Phenomenology · Physics 2017-01-03 Asmita Mukherjee , Sangem Rajesh

The inclusive production of {\Lambda} hyperons in proton-proton collisions at $\sqrt{s}$ = 3.18 GeV was measured with HADES at the GSI Helmholtzzentrum f\"ur Schwerionenforschung in Darmstadt. The experimental data are compared to a…

In this work, we present more detail of the calculation on the NLO QCD corrections to polarization of direct J/psi production via color singlet at Tevatron and LHC, as well as the results for Upsilon for the first time. Our results show…

High Energy Physics - Phenomenology · Physics 2009-01-14 Bin Gong , Jian-Xiong Wang

This study forecasts the production of doubly heavy baryons, $\Xi_{cc}$, $\Xi_{bc}$, and $\Xi_{bb}$, within the nonrelativistic QCD framework at the Muon-Ion Collider (MuIC). It examines two production mechanisms: photon-gluon fusion…

High Energy Physics - Phenomenology · Physics 2025-03-05 Xue-Yun Zhao , Lei Guo , Xu-Chang Zheng , Huan-Yu Bi , Xing-Gang Wu , Qi-Wei Ke

Within the nonrelativistic QCD (NRQCD) factorization framework, we have computed the ${\mathcal O}(\alpha_s^2)$ corrections to the exclusive production of $P$-wave spin-triplet charmonia $\chi_{cJ}(J=0,1,2)$ accompanied by a hard photon at…

High Energy Physics - Phenomenology · Physics 2020-12-02 Wen-Long Sang , Feng Feng , Yu Jia

Several fixed-target experiments reported J/$\psi$ and $\Upsilon$ polarization measurements, as functions of Feynman $x$ ($x_{\rm F}$) and transverse momentum ($p_{\rm T}$), in three different polarization frames, using different…

High Energy Physics - Phenomenology · Physics 2022-10-19 Pietro Faccioli , Ilse Krätschmer , Carlos Lourenço

Cross sections of the heavy quarkonium production process $e^+e^-\to H + \gamma$ at the c.m. energy of $Z^0$-boson resonance are calculated at leading order in $\alpha_s$ with relativistic corrections resummed within the framework of…

High Energy Physics - Phenomenology · Physics 2024-06-11 Anton Trunin

We compute the cross section for exclusive production of a photon associated with a heavy quarkonium H of charge-conjugation parity C=+1 from e+ e- annihilation into a virtual photon at the center-of-momentum energy root-s=10.58 GeV. The…

High Energy Physics - Phenomenology · Physics 2008-11-26 Hee Sok Chung , Jungil Lee , Chaehyun Yu

We anticipate new features of quarkonium production in heavy ion collisions at RHIC and LHC energies which differ from a straightforward extrapolation of results at CERN SPS energy. General arguments indicate that one may expect quarkonium…

High Energy Physics - Phenomenology · Physics 2009-11-07 R. L. Thews

We study the polar and azimuthal decay angular distributions of $J/\psi$ mesons produced in semi-inclusive, deep-inelastic electron-proton scattering. For the description of the quarkonium formation mechanism, we adopt the framework of…

High Energy Physics - Phenomenology · Physics 2022-03-23 Umberto D'Alesio , Luca Maxia , Francesco Murgia , Cristian Pisano , Sangem Rajesh

We show that when the factorized cross section for heavy quarkonium production includes next-to-leading power (NLP) contributions associated with the production of the heavy quark pair at short distances, it naturally reproduces all high…

High Energy Physics - Phenomenology · Physics 2014-10-14 Yan-Qing Ma , Jian-Wei Qiu , George Sterman , Hong Zhang

We calculate the inclusive production of charged hadrons in $\pbp$ collisions to next-to-leading order (NLO) in the QCD improved parton model using a new set of NLO fragmentation functions for charged pions and kaons. We predict…

High Energy Physics - Phenomenology · Physics 2016-09-01 F. M. Borzumati , G. Kramer

The quarkonium plus photon production in coherent hadron-hadron interactions at the LHC is studied using the non-relativistic QCD factorization formalism. We investigate a set of kinematic distributions and compute the total cross sections…

High Energy Physics - Phenomenology · Physics 2018-04-27 M. M. Machado , G. Gil da Silveira

We compute the relativistic corrections to the color-singlet contribution to gluon fragmentation into a J/psi at relative order v^4, making use of the nonrelativistic QCD (NRQCD) factorization approach. The corresponding full-QCD process…

High Energy Physics - Phenomenology · Physics 2013-01-17 Geoffrey T. Bodwin , U-Rae Kim , Jungil Lee

We investigate the inclusive top quark pair production in proton-proton and proton-antiproton collisions at high energies in the framework of kt-factorization QCD approach. Our study is based on the off-shell partonic subprocesses g*g* ->…

High Energy Physics - Phenomenology · Physics 2015-05-28 A. V. Lipatov , N. P. Zotov

With nonrelativistic QCD factorization, we calculate the $\Upsilon(1S)$ prompt production at hadron colliders at next-to-leading order in $\alpha_s$. In addition to the color-singlet contribution, color-octet channels (especially the P-wave…

High Energy Physics - Phenomenology · Physics 2015-06-04 Kai Wang , Yan-Qing Ma , Kuang-Ta Chao

Exclusive quarkonium pair production in electron-positron collisions is studied in non-relativistic QCD. The obtained cross section for J/\psi + \eta_c production in the leading order is confronted against the recent measurements by the…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. Hagiwara , E. Kou , C. -F. Qiao

Hard diffractive photo- and electroproduction of heavy vector mesons ($J/\psi$ and $\Upsilon$) is evaluated within the leading $\alpha_s\ln{Q^2 \over\Lambda_{QCD}^2}$ approximation of QCD. In difference from our earlier work on that…

High Energy Physics - Phenomenology · Physics 2009-10-30 L. Frankfurt , W. Koepf , M. Strikman

We study the inclusive J/psi production at large transverse momenta at lepton-hadron colliders in the limit when the exchange photon is quasi real, also referred to as photoproduction. Our computation includes the leading-P_T leading-v…

High Energy Physics - Phenomenology · Physics 2020-11-11 Carlo Flore , Jean-Philippe Lansberg , Hua-Sheng Shao , Yelyzaveta Yedelkina