Related papers: Heavy Quark Fragmentation

The ${^{3}\!}P_{0}$ model reloaded

We revisit the phenomenological ${^{3}\!}P_{0}$ model for the decay of quarkonium $\left( Q\bar{Q}\right) $ into two open flavor mesons ($\bar{\mathfrak{M}}\mathfrak{M}% $). We take the heavy-quark limit and derive a transition rate between…

High Energy Physics - Phenomenology · Physics 2024-12-02 Roberto Bruschini , Pedro González , Tatiana Tarutina

Heavy Quarks: Summary Report

The present status of the heavy-quark production theory is critically reviewed in the first contribution. The second contribution summarises the present heavy flavour data from HERA and gives an outlook of what can be expected from HERA-II.…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. Baines , S. P. Baranov , O. Behnke , J. Bracinik , M. Cacciari , M. Corradi , A. Dainese , S. Diglio , K. J. Eskola , T. O. Eynck , A. Geiser , G. Grindhammer , H. Jung , B. A. Kniehl , V. J. Kolhinen , S. Kretzer , K. Kutak , E. Laenen , Th. Lagouri , A. V. Lipatov , F. Maltoni , A. D. Martin , A. Meyer , A. Morsch , L. Motyka , K. Peters , F. Petrucci , O. I. Piskounova , R. Ranieri , H. Ruiz , M. G. Ryskin , I. Schienbein , J. Smith , M. Smizanska , H. Spiesberger , A. Tonazzo , U. Uwer , M. Verducci , R. Vogt , C. Weiser , N. P. Zotov

Crossing Heavy-Flavour Thresholds in Fragmentation Functions

In analogy with parton distribution functions, also parton fragmentation functions obey matching conditions when crossing heavy-flavour thresholds. We compute these matching conditions at next-to-leading order in the strong coupling…

High Energy Physics - Phenomenology · Physics 2010-02-03 Matteo Cacciari , Paolo Nason , Carlo Oleari

On pi-pi Correlations in Polarized Quark Fragmentation Using the Linear Sigma Model

Using the linear sigma model to describe quark--pion interactions, we compute polarization asymmetries in quark fragmentation. We show that the effects of transverse quark polarizations appear in the correlation between the two leading…

High Energy Physics - Phenomenology · Physics 2008-02-03 John C. Collins , Glenn A. Ladinsky

Fragmentation Functions For Baryons in a Quark-Diquark Model

A perturbative QCD calculation of heavy flavor quark fragmentation into heavy flavor baryons is developed along the lines of corresponding heavy meson models. The non-perturbative formation of the baryon is accomplished by implementing the…

High Energy Physics - Phenomenology · Physics 2009-10-30 Anatoly D. Adamov , Gary R. Goldstein

AAMQS: A non-linear QCD analysis of new HERA data at small-x including heavy quarks

We present a global analysis of available data on inclusive structure functions and reduced cross sections measured in electron-proton scattering at small values of Bjorken-x, x<0.01, including the latest data from HERA on reduced cross…

High Energy Physics - Phenomenology · Physics 2015-05-20 J. L. Albacete , N. Armesto , J. G. Milhano , P. Quiroga Arias , C. A. Salgado

Double, Triple and Hidden Charm Production in the Statistical Coalescence Model

The production of particles with double, triple and hidden charm in heavy ion collisions is studied in the framework of the statistical coalescence model. According to the postulates of the model, the charm quark-antiquark pairs are created…

Nuclear Theory · Physics 2007-05-23 Andriy Kostyuk

First measurements of in-jet fragmentation and correlations of charmed mesons and baryons in pp collisions with ALICE

Fragmentation functions are one of the key components of the factorisation theorem used to calculate heavy-flavour hadron production cross sections. The non-perturbative nature of fragmentation functions necessitates that they are…

High Energy Physics - Experiment · Physics 2023-10-24 Antonio Palasciano

Single Electrons from Heavy Flavor Decays in p+p Collisions at sqrt(s) = 200 GeV

The invariant differential cross section for inclusive electron production in $p + p$ collisions at $\sqrt{s} = 200$~GeV has been measured by the PHENIX experiment at the Relativistic Heavy Ion Collider over the transverse momentum range…

High Energy Physics - Experiment · Physics 2023-04-07 PHENIX Collaboration , S. S. ~Adler , S. ~Afanasiev , C. ~Aidala , N. N. ~Ajitanand , Y. ~Akiba , J. ~Alexander , R. ~Amirikas , L. ~Aphecetche , S. H. ~Aronson , R. ~Averbeck , T. C. ~Awes , R. ~Azmoun , V. ~Babintsev , A. ~Baldisseri , K. N. ~Barish , P. D. ~Barnes , B. ~Bassalleck , S. ~Bathe , S. ~Batsouli , V. ~Baublis , A. ~Bazilevsky , S. ~Belikov , Y. ~Berdnikov , S. ~Bhagavatula , J. G. ~Boissevain , H. ~Borel , S. ~Borenstein , M. L. ~Brooks , D. S. ~Brown , N. ~Bruner , D. ~Bucher , H. ~Buesching , V. ~Bumazhnov , G. ~Bunce , J. M. ~Burward-Hoy , S. ~Butsyk , X. ~Camard , J. -S. ~Chai , P. ~Chand , W. C. ~Chang , S. ~Chernichenko , C. Y. ~Chi , J. ~Chiba , M. ~Chiu , I. J. ~Choi , J. ~Choi , R. K. ~Choudhury , T. ~Chujo , V. ~Cianciolo , Y. ~Cobigo , B. A. ~Cole , P. ~Constantin , D. ~d'Enterria , G. ~David , H. ~Delagrange , A. ~Denisov , A. ~Deshpande , E. J. ~Desmond , A. ~Devismes , O. ~Dietzsch , O. ~Drapier , A. ~Drees , R. ~du~Rietz , A. ~Durum , D. ~Dutta , Y. V. ~Efremenko , K. ~El~Chenawi , A. ~Enokizono , H. ~En'yo , S. ~Esumi , L. ~Ewell , D. E. ~Fields , F. ~Fleuret , S. L. ~Fokin , B. D. ~Fox , Z. ~Fraenkel , J. E. ~Frantz , A. ~Franz , A. D. ~Frawley , S. -Y. ~Fung , S. ~Garpman , T. K. ~Ghosh , A. ~Glenn , G. ~Gogiberidze , M. ~Gonin , J. ~Gosset , Y. ~Goto , R. ~Granier~de~Cassagnac , N. ~Grau , S. V. ~Greene , M. ~Grosse~Perdekamp , W. ~Guryn , H. -Å. ~Gustafsson , T. ~Hachiya , J. S. ~Haggerty , H. ~Hamagaki , A. G. ~Hansen , E. P. ~Hartouni , M. ~Harvey , R. ~Hayano , N. ~Hayashi , X. ~He , M. ~Heffner , T. K. ~Hemmick , J. M. ~Heuser , M. ~Hibino , J. C. ~Hill , W. ~Holzmann , K. ~Homma , B. ~Hong , A. ~Hoover , T. ~Ichihara , V. V. ~Ikonnikov , K. ~Imai , D. ~Isenhower , M. ~Ishihara , M. ~Issah , A. ~Isupov , B. V. ~Jacak , W. Y. ~Jang , Y. ~Jeong , J. ~Jia , O. ~Jinnouchi , B. M. ~Johnson , S. C. ~Johnson , K. S. ~Joo , D. ~Jouan , S. ~Kametani , N. ~Kamihara , J. H. ~Kang , S. S. ~Kapoor , K. ~Katou , S. ~Kelly , B. ~Khachaturov , A. ~Khanzadeev , J. ~Kikuchi , D. H. ~Kim , D. J. ~Kim , D. W. ~Kim , E. ~Kim , G. -B. ~Kim , H. J. ~Kim , E. ~Kistenev , A. ~Kiyomichi , K. ~Kiyoyama , C. ~Klein-Boesing , H. ~Kobayashi , L. ~Kochenda , V. ~Kochetkov , D. ~Koehler , T. ~Kohama , M. ~Kopytine , D. ~Kotchetkov , A. ~Kozlov , P. J. ~Kroon , C. H. ~Kuberg , K. ~Kurita , Y. ~Kuroki , M. J. ~Kweon , Y. ~Kwon , G. S. ~Kyle , R. ~Lacey , V. ~Ladygin , J. G. ~Lajoie , A. ~Lebedev , S. ~Leckey , D. M. ~Lee , S. ~Lee , M. J. ~Leitch , X. H. ~Li , H. ~Lim , A. ~Litvinenko , M. X. ~Liu , Y. ~Liu , C. F. ~Maguire , Y. I. ~Makdisi , A. ~Malakhov , V. I. ~Manko , Y. ~Mao , G. ~Martinez , M. D. ~Marx , H. ~Masui , F. ~Matathias , T. ~Matsumoto , P. L. ~McGaughey , E. ~Melnikov , F. ~Messer , Y. ~Miake , J. ~Milan , T. E. ~Miller , A. ~Milov , S. ~Mioduszewski , R. E. ~Mischke , G. C. ~Mishra , J. T. ~Mitchell , A. K. ~Mohanty , D. P. ~Morrison , J. M. ~Moss , F. ~Mühlbacher , D. ~Mukhopadhyay , M. ~Muniruzzaman , J. ~Murata , S. ~Nagamiya , J. L. ~Nagle , T. ~Nakamura , B. K. ~Nandi , M. ~Nara , J. ~Newby , P. ~Nilsson , A. S. ~Nyanin , J. ~Nystrand , E. ~O'Brien , C. A. ~Ogilvie , H. ~Ohnishi , I. D. ~Ojha , K. ~Okada , M. ~Ono , V. ~Onuchin , A. ~Oskarsson , I. ~Otterlund , K. ~Oyama , K. ~Ozawa , D. ~Pal , A. P. T. ~Palounek , V. ~Pantuev , V. ~Papavassiliou , J. ~Park , A. ~Parmar , S. F. ~Pate , T. ~Peitzmann , J. -C. ~Peng , V. ~Peresedov , C. ~Pinkenburg , R. P. ~Pisani , F. ~Plasil , M. L. ~Purschke , A. K. ~Purwar , J. ~Rak , I. ~Ravinovich , K. F. ~Read , M. ~Reuter , K. ~Reygers , V. ~Riabov , Y. ~Riabov , G. ~Roche , A. ~Romana , M. ~Rosati , P. ~Rosnet , S. S. ~Ryu , M. E. ~Sadler , N. ~Saito , T. ~Sakaguchi , M. ~Sakai , S. ~Sakai , V. ~Samsonov , L. ~Sanfratello , R. ~Santo , H. D. ~Sato , S. ~Sato , S. ~Sawada , Y. ~Schutz , V. ~Semenov , R. ~Seto , M. R. ~Shaw , T. K. ~Shea , T. -A. ~Shibata , K. ~Shigaki , T. ~Shiina , C. L. ~Silva , D. ~Silvermyr , K. S. ~Sim , C. P. ~Singh , V. ~Singh , M. ~Sivertz , A. ~Soldatov , R. A. ~Soltz , W. E. ~Sondheim , S. P. ~Sorensen , I. V. ~Sourikova , F. ~Staley , P. W. ~Stankus , E. ~Stenlund , M. ~Stepanov , A. ~Ster , S. P. ~Stoll , T. ~Sugitate , J. P. ~Sullivan , E. M. ~Takagui , A. ~Taketani , M. ~Tamai , K. H. ~Tanaka , Y. ~Tanaka , K. ~Tanida , M. J. ~Tannenbaum , P. ~Tarján , J. D. ~Tepe , T. L. ~Thomas , J. ~Tojo , H. ~Torii , R. S. ~Towell , I. ~Tserruya , H. ~Tsuruoka , S. K. ~Tuli , H. ~Tydesjö , N. ~Tyurin , H. W. ~van~Hecke , J. ~Velkovska , M. ~Velkovsky , V. ~Veszprémi , L. ~Villatte , A. A. ~Vinogradov , M. A. ~Volkov , E. ~Vznuzdaev , X. R. ~Wang , Y. ~Watanabe , S. N. ~White , F. K. ~Wohn , C. L. ~Woody , W. ~Xie , Y. ~Yang , A. ~Yanovich , S. ~Yokkaichi , G. R. ~Young , I. E. ~Yushmanov , W. A. ~Zajc , C. ~Zhang , S. ~Zhou , S. J. ~Zhou , L. ~Zolin

Event-activity dependence of heavy-flavor production at the ALICE experiment

Heavy-flavor production at the LHC offers valuable tests of quantum-chromodynamics calculations, owing to the large masses of heavy quarks. Measurements of charm production as a function of event activity reveal new features of charm…

Nuclear Experiment · Physics 2025-04-01 Robert Vertesi

Different degrees of complexity in multiparticle production at the LHC energies with the transition from soft to hard processes

We apply a complex network-based method of visibility graph to explore the degree of complexity and fractal nature in the multiparticle production process at the LHC energy regime. For the investigation, we have used proton-proton (pp)…

High Energy Physics - Phenomenology · Physics 2023-04-14 Hirak Koley , Arindam Mondal , Somnath Kar , Sreejita Mukherjee , Joyati Mondal , Argha Deb , Mitali Mondal

Heavy Flavoured Meson Fragmentation Functions in $e^+e^-$ annihilation up to NNLO + NNLL

In this contribution, we make use of the QCD perturbative fragmentation function formalism to describe the one-particle inclusive fragmentation of a heavy quark produced in $e^+e^-$ annihilation at $\mathcal{O}(\alpha_S^2)$. We perform the…

High Energy Physics - Phenomenology · Physics 2023-06-06 Leonardo Bonino , Matteo Cacciari , Giovanni Stagnitto

Thoughts on Heavy Quark Production

Various aspects of heavy flavor production in heavy ion collisions in the context of elementary collisions are reviewed. The interplay between theory in experiment in $\epem$ and $\pbarp$ data is been found to be non-trivial, even with new…

Nuclear Experiment · Physics 2009-11-10 Peter Steinberg

Soft and hard components of two-particle distributions on ($y_t,\eta,\phi$) from p-p collisions at $\sqrt{s} = 200$ GeV

We report measurements of large-scale two-particle correlations for 200 GeV p-p collisions on momentum components transverse rapidity $y_t$ (pion mass assigned), pseudorapidity $\eta$ and azimuth angle $\phi$. In both transverse $y_t…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. J. Porter , T. A. Trainor

Charmonium Production via Fragmentation at DESY HERA

The cross section for the photoproduction of large-p_T J/psi mesons at HERA is calculated at next-to-leading order, adopting a perturbative approach to describe the fragmentation of charm quarks and gluons into J/psi mesons. We treat the…

High Energy Physics - Phenomenology · Physics 2009-10-30 Bernd A. Kniehl , Gustav Kramer

Differential heavy quark pair production at small $x$

We consider the production of a heavy quark pair in proton-proton collisions. For bottom and charm quarks, the final state invariant mass is typically much smaller than the collider energy (e.g. at the LHC), so that high-energy logarithms…

High Energy Physics - Phenomenology · Physics 2023-03-21 Federico Silvetti , Marco Bonvini

Heavy-Quark Production in $e\gamma$ Scattering

Open heavy flavour production at $e^+e^-$ colliders in deeply inelastic $e\gamma$ scattering has an interesting feature: the structure function $F_2(x,Q^2)$ for this process is calculable for $x>0.01$, and is essentially proportional to the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Eric Laenen , Stephan Riemersma

Open Charm Enhancement in Pb+Pb Collisions at SPS

The statistical coalescence model for the production of open and hidden charm is considered within the canonical ensemble formulation. The data for the J/\psi multiplicity in Pb+Pb collisions at 158 A GeV are used for the model prediction…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. I. Gorenstein , A. P. Kostyuk , H. Stoecker , W. Greiner

Electroproduction of heavy quarks at NLO

A new next-to-leading order Monte Carlo program for the calculation of fully differential heavy quark cross sections in electroproduction is described. A comparison between the theoretical predictions and the latest charm production data…

High Energy Physics - Phenomenology · Physics 2007-05-23 B. W. Harris

Heavy Flavors in High Energy ep Collisions

Most recent measurements of open charm and beauty production in high energy ep collisions at HERA are reviewed. The measurements explored the different aspects of quantum chromodynamics involved in the process of heavy flavor production.…

High Energy Physics - Experiment · Physics 2014-11-17 Meng Wang