Productions of J/ψ mesons in p-Pb collisions at 5 TeV

Liu, Fu‐Hu; Lao, Hai-Ling; Lacey, R.

doi:10.1142/s0218301316500361

Cited by 5 publications

(5 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the multi-source thermal model [36][37][38][39], we may think that a few emission sources are formed in high energy collisions. For nuclear fragments from the projectile and target in nucleus-nucleus collisions, the sources can be nucleons and nucleon clusters.…”

Section: Formalism and Methodsmentioning

confidence: 99%

“…This confirms the validity of Eq. ( 6) based on two contributor sources in the framework of multi-source thermal model [36][37][38][39].…”

Section: Formalism and Methodsmentioning

confidence: 99%

“…We hope that we could use a simple idea and formalism to describe uniformly the spectra of various particles, in particular the spectra of heavy quarkoniums such as J/ψ due to its abundant early production in the collisions and wide transverse momentum distribution. In the framework of the multi-source thermal model [36][37][38][39], we have used the idea of quark composition describing tentatively and uniformly the spectra of various particles in our recent work [40,41]. It is interesting for us to test further the idea systematically, but the idea of two contributor quarks or partons is used due to the fact that some particles such as leptons have no quark composition.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A systematic analysis of transverse momentum spectra of $J/ψ$ mesons in high energy collisions

Zhang,

Liu,

Olimov

2021

Preprint

Self Cite

View full text Add to dashboard Cite

We aggregate the transverse momentum spectra of J/ψ mesons produced in high energy gold-gold (Au-Au), deuteron-gold (d-Au), lead-lead (Pb-Pb), proton-lead (p-Pb), and proton-(anti)proton (p-p(p)) collisions measured by several collaborations at the Relativistic Heavy Ion collider (RHIC), the Tevatron Proton-Antiproton Collider, and the Large Hadron Collider (LHC). The collision energy (the center-of-mass energy) gets involved in a large range from dozens of GeV to 13 TeV (the top LHC energy). We consider two participant or contributor partons, a charm quark and an anti-charm quark, in the production of J/ψ. The probability density of each quark is described by means of the modified Tsallis-Pareto-type function (the TP-like function) while considering that both quarks make suitable contributions to the J/ψ transverse momentum spectrum. Therefore, the convolution of two TP-like functions is applied to represent the J/ψ spectrum. We adopt the mentioned convolution function to fit the experimental data and find out the trends of the power exponent, effective temperature, and of the revised index with changing the centrality, rapidity, and collision energy. Beyond that, we capture the characteristic of J/ψ spectrum, which is of great significance to better understand the production mechanism of J/ψ in high energy collisions.

show abstract

Section: Formalism and Methodsmentioning

confidence: 99%

“…This confirms the validity of Eq. ( 6) based on two contributor sources in the framework of multi-source thermal model [36][37][38][39].…”

Section: Formalism and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A systematic analysis of transverse momentum spectra of $J/ψ$ mesons in high energy collisions

Zhang,

Liu,

Olimov

2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…D mesons consisting of one heavy quark and light quark, is produced in the later stage of the fireball, so they carry more information of the medium. High energy elementary collisions, such as pp , pA collisions, have been proposed to study the cold nuclear effects (including the nuclear absorption [14], Cronin effect and shadowing effect [16,17]) for high energy nucleus-nucleus collisions [18,19]. One amazing results in pp collisions is the long-range ridge structure in two particle azimuthal correlations with a large pseudo-rapidity in high multiplicities [20,21].…”

Section: Introductionmentioning

confidence: 99%

Correlations of Heavy Quarks in Hot Deconfined Medium

Li¹

2019

AJPA

View full text Add to dashboard Cite

The early universe consists of bacis particles like quarks and gluons. Their interactions are controlled by strong interactions. In order to produce this new kind of matters, one can collide heavy ions. Large amount of energy will be transformed into particles. These particles form a matter with extremely high temperature. Usually this kind of matter can only be produced in heavy ion collisions, not nucleon collisions. But the recent experimental data indicate that it may also generate this kind of matter. The signal in nucleon collisions are taken as a baseline for heavy ion collisions, and other theoretical and experimental studies are based on this assumption that no hot medium is produced in nucleon collisions. If this new matter is also produced in nucleon collisions, this will affect the signals in heavy ion collisions. This work studies the momentum correlations of heavy quark pairs in the small colliding system such as proton-proton collisions based on the Langevin equation. With the production of deconfined hot medium, heavy quarks moving in the opposite direction can suffer energy loss and random kicks from the thermal medium. Moving in different directions, heavy quark and its anti-quark will suffer different random kicks from the thermal medium, which will change their momentum randomly. Their momentum correlations will be modified after moving out of the hot medium. Finally when heavy quark and anti-quark move out of the hot medium, their momentum is not in the opposite direction. Insteand, they move with a angular less than pi. We propose the momentum correlation of D mesons as a probe of the early stage of the proton-proton collisions, where the deconfined medium may be produced.

show abstract

“…The nuclear modification factor R AA is a measurement of the cold and hot medium effects on charmonium production. Cold nuclear matter effects include the nuclear absorption [7], Cronin effect [8] and shadowing effect [9,10]. The first one means that primordially produced charmonium from parton hard scatterings [11] suffer the inelastic scatterings with surrounding nucleons before they move out of the nucleus.…”

mentioning

confidence: 99%

Strong diffusion effect of charm quarks on J/ψ production in Pb–Pb collisions at the LHC

Zhao

Chen

2018

Physics Letters B

View full text Add to dashboard Cite

We study the J/ψ production based on coalescence model at √ sNN = 2.76 and 5.02 TeV Pb-Pb collisions. With the colliding energy increasing from 2.76 TeV to 5.02 TeV, the number of charm pairs is enhanced by more than 50%. However, the ratio of J/ψ inclusive nuclear modification factorsAA is only about 1.1 ∼ 1.2. We find that the regeneration of J/ψ is proportional to the densities of charm and anti-charm quarks, instead of their total numbers. The charm quark density is diluted by the strong expansion of quark gluon plasma, which suppresses the combination probability of heavy quarks and J/ψ regeneration. This effect is more important in higher colliding energies where QGP expansion is strong. We also propose the ratio N J/ψ /(ND) 2 as a measurement of c andc coalescence probability, which is only affected by the heavy quark diffusions in QGP, and does not depend on the inputs such as cold nuclear matter effects and cross sections of charm quark production. Further more, we give the predictions at the energy of Future Circular Collider ( √ sNN = 39 TeV).

show abstract

Productions of J/ψ mesons in p-Pb collisions at 5 TeV

Cited by 5 publications

References 47 publications

A systematic analysis of transverse momentum spectra of $J/ψ$ mesons in high energy collisions

A systematic analysis of transverse momentum spectra of $J/ψ$ mesons in high energy collisions

Correlations of Heavy Quarks in Hot Deconfined Medium

Strong diffusion effect of charm quarks on J/ψ production in Pb–Pb collisions at the LHC

Contact Info

Product

Resources

About