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We present the production systematics of open charm hadron yields in high-energy collisions and their description based on the Statistical Hadronization Model of charm (SHMc). The rapidity density of $D^0, D^+, D^{*+}, D_s^+$ mesons and…

High Energy Physics - Phenomenology · Physics 2025-07-28 Peter Braun-Munzinger , Krzysztof Redlich , Natasha Sharma , Johanna Stachel

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 show that one can re-arrange the Heavy Quark Expansion for inclusive weak decays of charmed hadrons in such a way that the resulting expansion is an expansion in $\Lambda_{\rm QCD} / m_c$ and $\alpha_s (m_c)$ with order-one coefficients.…

High Energy Physics - Phenomenology · Physics 2021-03-04 Th. Mannel , D. Moreno , A. A. Pivovarov

We present a new model for the description of heavy-flavor hadronization in high-energy nuclear (and possibly hadronic) collisions, where the process takes place not in the vacuum, but in the presence of other color charges. We explore its…

High Energy Physics - Phenomenology · Physics 2022-11-23 Andrea Beraudo , Arturo De Pace , Marco Monteno , Marzia Nardi , Daniel Pablos , Francesco Prino

We study the production asymmetry of charm versus anticharm mesons in photon-proton interactions. We consider photon gluon fusion plus higher order corrections in which light quarks through vector meson-proton interactions contribute to the…

High Energy Physics - Phenomenology · Physics 2009-11-07 G. Herrera , A. Sanchez-Hernandez , E. Cuautle , J. Magnin

Observations by the PHENIX and STAR collaborations suggest that a strongly coupled quark-gluon plasma is produced in heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC). After a brief introduction to heavy-ion physics,…

Nuclear Experiment · Physics 2011-06-15 A. G. Knospe

We study open charm hadrons production in pp and Au+Au collisions at $\sqrt{s_{\mathrm{NN}}} = 200$~GeV using an improved a multi-phase transport (AMPT) model. Specifically, we show the transverse-momentum spectra and nuclear modification…

High Energy Physics - Phenomenology · Physics 2026-01-21 Bijun Fan , Chao Zhang , Liang Zheng , Shusu Shi

The LHCb collaboration has recently performed a first measurement of the angular production asymmetry in the distribution of beauty quarks and anti-quarks at a hadron collider. We calculate the corresponding standard model prediction for…

High Energy Physics - Phenomenology · Physics 2015-08-12 Rhorry Gauld , Ulrich Haisch , Ben D. Pecjak , Emanuele Re

We consider the production of charmed baryons and mesons in the proton-antiproton binary reactions at the energies of the future $\bar{P}$ANDA experiment. To describe these processes in terms of hadronic interaction models, one needs strong…

High Energy Physics - Phenomenology · Physics 2015-06-03 A. Khodjamirian , Ch. Klein , Th. Mannel , Y. -M. Wang

The calculation of muon spectra from the decay of Lambda_c baryons was carried out on the basis of the description of recent data on charmed-baryon production in hadronic interactions. Data are described in the framework of Quark--Gluon…

High Energy Physics - Phenomenology · Physics 2010-03-04 O. I. Piskounova , N. V. Nikitin

The associative charm particles production in nucleon-nucleon collisions $N+N\to \Lambda_c(\Sigma_c)+\bar{D}+N$, is described in a general way and the spin and isospin structure of the corresponding matrix elements are derived. Using an…

Nuclear Theory · Physics 2007-05-23 Michail P. Rekalo Egle Tomasi-Gustafsson

We study the production of multi-charmed hadrons by recombination in heavy ion collisions by focusing on the production of $\Xi_{cc}$, $\Xi_{cc}^*$, $\Omega_{scc}$, $\Omega_{scc}^*$, $\Omega_{ccc}$ baryons and X(3872) mesons. Starting from…

Nuclear Theory · Physics 2020-02-12 Sungtae Cho , Su Houng Lee

I review a number of topics where conventional wisdom in hadron physics has been challenged. For example, hadrons can be produced at large transverse momentum directly within a hard higher-twist QCD subprocess, rather than from jet…

High Energy Physics - Phenomenology · Physics 2017-08-23 Stanley J. Brodsky

We present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for $pp$ collisions at $\sqrt{s} = 13 \, {\rm TeV}$. Predictions are provided for both anti-$k_t$ bottom- and…

High Energy Physics - Phenomenology · Physics 2019-05-01 Rhorry Gauld , Ulrich Haisch , Benjamin D. Pecjak

In the hadroproduction of charm in the context of string fragmentation, the pull of a beam remnant at the other end of a string may give a charm hadron more energy than the perturbatively produced charm quark. The collapse of a low-mass…

High Energy Physics - Phenomenology · Physics 2011-01-13 Emanuel Norrbin , Torbjörn Sjöstrand

We study charmed baryon resonances that are generated dynamically from a coupled-channel unitary approach that implements heavy-quark symmetry. Some states can already be identified with experimental observations, such as $\Lambda_c(2595)$,…

High Energy Physics - Phenomenology · Physics 2010-11-02 L. Tolos , C. Garcia-Recio , V. K. Magas , T. Mizutani , J. Nieves , A. Ramos , L. L. Salcedo

Recent measurements of charm-baryon production in hadronic collisions have questioned the universality of charm-quark fragmentation across different collision systems. In this work the fragmentation of charm quarks into charm baryons is…

Nuclear Experiment · Physics 2024-04-15 ALICE Collaboration

In order to obtain information about the polarized strange quark distribution, we studied the semi-inclusive $\Lambda_c / \bar{\Lambda}_c$ production in neutrino and polarized proton collisions. We found that these reactions are effective…

High Energy Physics - Phenomenology · Physics 2009-11-07 Kazutaka Sudoh , Toshiyuki Morii

Charge asymmetries for the charm meson production ($D^{*+}$--$D^{*-}$, $D^{*0}$--$\bar D^{*0}$ and $D^+_s$--$\bar D^-_s$) have been estimated for the COMPASS kinematic conditions in the framework of perturbative recombination model. Mass…

High Energy Physics - Phenomenology · Physics 2015-06-25 A. V. Berezhnoy , A. K. Likhoded

The open heavy-flavour hadron measurements in proton--proton and proton--lead collisions give insight into the charm production and hadronization mechanisms. In this contribution, the latest measurements of the production cross section of…

Nuclear Experiment · Physics 2021-09-14 Annalena Sophie Kalteyer