Charmed hadron production in an improved quark coalescence model

Cho, Sungtae; Sun, Kai-Jia; Ko, Che Ming; Lee, Su Houng; Oh, Yongseok

doi:10.1103/physrevc.101.024909

Cited by 34 publications

(21 citation statements)

References 56 publications

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“…Once experimental results for the fullyheavy baryons are released, the quality of the match between our predictions and the data will give indications on the validity of the diquark model approach and the possible emergence of a baryon-meson dynamical supersymmetry. While there is a large number of studies on the spectroscopy of tetraquark states, there are few investigations regarding their production [97][98][99][100][101][102][103] and principal decay modes [33,69,85,86,[104][105][106][107][108][109]. Some progresses have been made.…”

Section: Summary and Perspectivementioning

confidence: 99%

Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective

et al. 2020

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Using a relativized diquark model Hamiltonian, we calculate the masses of $$J^{PC}=0^{++}$$ J PC = 0 + + ground-state tetraquarks in the following systems: $$b s {\bar{b}} {\bar{s}}$$ b s b ¯ s ¯ , $$bb {\bar{n}} {\bar{n}}$$ b b n ¯ n ¯ ($$n=u, d$$ n = u , d ), $$bb {\bar{s}} {\bar{s}}$$ b b s ¯ s ¯ , $$cc{\bar{c}} {\bar{c}}$$ c c c ¯ c ¯ , $$b b {\bar{b}} {\bar{b}}$$ b b b ¯ b ¯ , $$b c{\bar{b}} {\bar{c}}$$ b c b ¯ c ¯ and $$b b {\bar{c}} {\bar{c}}$$ b b c ¯ c ¯ . We also compute extensive spectra for the fully-heavy quark flavour combinations. Finally, as a test of the diquark model approach, we compute the masses of fully-heavy baryons in the diquark model. Our results may be compared soon to the forthcoming experimental data for fully-heavy three-quark systems.

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Section: Summary and Perspectivementioning

confidence: 99%

Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective

et al. 2020

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“…While recently it has been extended to LHC energies describing the spectra of main light hadrons like π, K, p, φ, Λ and the baryon to meson ratios at both RHIC and LHC energies [9]. Furthermore the HF hadron chemistry in AA collisions it has been investigated with the coalescence model predicting a large Λ C /D 0 [7,12,16,17].…”

Section: Hybrid Hadronization By Coalescence and Fragmentationmentioning

confidence: 99%

Charm Hadrons in pp collisions at LHC energy within a Coalescence plus Fragmentation approach

Minissale,

Plumari,

Greco

2020

Preprint

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The recent experimental measurements on pp collisions at √ s = 5.02 TeV have shown a very large abundance of heavy baryon production corresponding to a ratio of Λc/D 0 ∼ 0.6, about one order of magnitude larger than what measured in e + e − , ep collisions and even in pp collisions at LHC, but at forward rapidity. We apply for the first time a quark coalescence plus fragmentation approach, assuming the formation of Hot QCD matter at finite temperature. An approach that have predicted a Λc/D ∼ O(1) in AA collisions at RHIC energy. We calculate the heavy baryon/meson ratio and the pT spectra of charmed hadrons with and without strangeness content: D 0 , Ds, Λ + c , Ξc and Ωc in pp collisions at top LHC energies, finding a satisfactory prediction of the measured Λ + c /D 0 and the Ξc/D 0 without any specific tuning of parameters to pp collisions. At variance with other approaches a coalescence approach predicts also a significant production of Ωc such that Ωc/D 0 ∼ O(10 −1 ) .

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“…The relative abundance of the different heavy hadron species produced can manifests a baryon-to-meson enhancement for charmed hadrons. [14][15][16][17] Measurements of heavy baryon production in pp, pA and AA collisions from RHIC to top LHC energies have recently attracted more and more attention, currently representing a challenge for the heavy-quark hadronization theoretical understanding. Experimental results from STAR [18] and ALICE [19] collaborations have shown an enhancement of the baryon/meson ratio in the heavy flavor sector like the one observed for light and strange hadrons, larger than the one predicted by the analysis of the charm fragmentation in collision systems as e + e − , e ± p and pp [20].…”

Section: Introductionmentioning

confidence: 99%

Production and ratios of heavy hadrons from large to small collision systems with a coalescence plus fragmentation approach

Minissale¹,

Plumari²,

Greco³

2022

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)

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The Λ c /D 0 ratio observed in AA collision at RHIC and LHC energies has a value of the order of the unity. The recent experimental measurements in pp collisions have shown a ratio of Λ c /D 0 ∼ 0.6, about one order of magnitude larger than that measured in e + e − , ep collisions. We study the hadronization after the propagation of charm quarks in the quarkgluon plasma (QGP). The propagation is described by means of a relativistic Boltzmann transport approach where the non-perturbative interaction between heavy quarks and light quarks is described by means of a quasi-particle approach. Using a coalescence plus fragmentation model for the hadronization we found in heavy-ion collision a large Λ c production resulting in a baryon over meson ratio of order O(1). Furthermore we present results for these ratios in pp collisions at top LHC energies assuming the formation of an hot QCD matter at finite temperature. We calculate the heavy baryon/meson ratio and the pT spectra of charmed hadrons with and without strangeness content: D 0 , D s , Λ c , Σ c and the recently measured Ξ c baryon, finding an enhancement in comparison with the ratio observed for e + e, ep collisions; moreover with this approach we predict also a significant production of Ω c respect to D 0 . *** The European Physical Society Conference on High Energy Physics (EPS-HEP2021), *** *** 26-30 July 2021 *** *** Online conference, jointly organized by Universität Hamburg and the research center DESY *** * Speaker

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Charmed hadron production in an improved quark coalescence model

Cited by 34 publications

References 56 publications

Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective

Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective

Charm Hadrons in pp collisions at LHC energy within a Coalescence plus Fragmentation approach

Production and ratios of heavy hadrons from large to small collision systems with a coalescence plus fragmentation approach

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