Methods for separation of deuterons produced in the medium and in jets in high-energy collisions

Sharma, N.; Pérez, T.; Castro, A. J.; Kumar, L.; Nattrass, C.

doi:10.1103/physrevc.98.014914

Cited by 11 publications

(7 citation statements)

References 36 publications

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“…However, it has been observed that B 2 at a given transverse momentum decreases as a function of multiplicity, suggesting that the nuclear emission volume increases with multiplicity [2,9,16]. In Pb-Pb collisions the B 2 parameter as a function of p T shows an increasing trend, which is usually attributed to the position-momentum correlations caused by radial flow or hard scatterings [17,18]. Such an increase of B 2 as a function of p T has in fact also been observed in pp collisions at √ s = 7 TeV [6].…”

Section: Introductionmentioning

confidence: 99%

(Anti-)deuteron production in pp collisions at $$\sqrt{s}=13 \ \text {TeV}$$

Acharya¹,

Adamová²,

Adler³

et al. 2020

Eur. Phys. J. C

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The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of $$\text {(anti-)deuterons}$$ (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at $$\sqrt{s}=13$$ s = 13 TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity ($${\mathrm {d} N_{ch}/\mathrm {d} \eta } \sim 26$$ d N ch / d η ∼ 26 ) as measured in p–Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p–Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and statistical hadronisation models (SHM).

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Section: Introductionmentioning

confidence: 99%

(Anti-)deuteron production in pp collisions at $$\sqrt{s}=13 \ \text {TeV}$$

Acharya¹,

Adamová²,

Adler³

et al. 2020

Eur. Phys. J. C

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“…From Eqs. (46) and ( 47) one can see √ B 3 should have similar behaviors with that of B 2 as the function of R f . We plot the result of √ B 3 with the dashed line in Fig.…”

Section: Applications In Pp P-pb and Pb-pb Collisions At The Lhcmentioning

confidence: 61%

“…[5,6,42] have also been used to study the light nuclei production. Much effort has been put into the recombination/coalescence factors B A 's in different phenomenological models [6,27,[43][44][45][46][47][48][49][50]. In particular, a consistent understanding for the collision system size and p T dependencies of B A 's measured recently in experiments is urgently necessary.…”

Section: Introductionmentioning

confidence: 99%

Momentum dependence of light nuclei production in pp, p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider

Wang,

Shao,

Song

2020

Preprint

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We study the momentum dependence of light nuclei produced in high energy collisions in the nucleon recombination mechanism. We derive simple formulas of the momentum distributions of deuterons (d) and helions ( 3 He). In particular, we obtain the analytic expressions of recombination/coalescence factors B A 's (B 2 for d and B 3 for 3 He) as functions of the system size and the momentum. We apply the deduced results to pp, p-Pb and Pb-Pb collisions to naturally explain behaviors of B A 's as functions of the pseudorapidity density of charged particles (dN ch /dη) and the transverse momentum per nucleon (p T /A) observed in experiments at the CERN Large Hadron Collider.

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“…Eqs. ( 28) and (29) show relationships of light nuclei with primordial nucleons in momentum space in the laboratory frame. They can be directly used to calculate the yields and p T spectra of light nuclei measured extensively as long as the nucleon Lorentz invariant momentum distributions are given.…”

Section: Kernelmentioning

confidence: 99%

“…One is the thermal production [11][12][13][14][15][16], which assumes that (anti-)nuclei are produced from a thermally and chemically equilibrated source like abundantlyproduced mesons and baryons. The other is the coalescence mechanism [1,3,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], in which light (anti-)nuclei are assumed to be produced by the coalescence of the jacent (anti-)nucleons in the phase space. Such production mechanism possesses its unique characteristics.…”

Section: Introductionmentioning

confidence: 99%

Production characteristics of light (anti-)nuclei from (anti-)nucleon coalescence in heavy ion collisions at energies employed at the RHIC beam energy scan

Zhao,

Feng,

Shao

et al. 2022

Preprint

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With the kinetic freeze-out nucleons and antinucleons obtained from the quark combination model, we study the production of light nuclei and antinuclei in the (anti-)nucleon coalescence mechanism in relativistic heavy ion collisions. We derive analytic formulas of the momentum distributions of different light nuclei and apply them to compute transverse momentum (p T ) spectra of (anti-)deuterons (d, d) and (anti-)tritons (t, t) in Au-Au collisions at √ s NN =7.7, 11.5, 19.6, 27, 39, 54.4 GeV. We find that the experimental data available for these p T spectra can be well reproduced. We further study the yields and yield ratios of different light (anti-)nuclei and naturally explain their interesting behaviors as a function of the collision energy. We especially point out that the multi-particle yield ratio tp/d 2 should be carefully corrected from hyperon weak decays for protons to probe the production characteristics of light nuclei. All of our results show that the coalescence mechanism for (anti-)nucleons plays a dominant role for the production of light nuclei and antinuclei at the RHIC beam energy scan energies.

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Methods for separation of deuterons produced in the medium and in jets in high-energy collisions

Cited by 11 publications

References 36 publications

(Anti-)deuteron production in pp collisions at $$\sqrt{s}=13 \ \text {TeV}$$

(Anti-)deuteron production in pp collisions at $$\sqrt{s}=13 \ \text {TeV}$$

Momentum dependence of light nuclei production in pp, p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider

Production characteristics of light (anti-)nuclei from (anti-)nucleon coalescence in heavy ion collisions at energies employed at the RHIC beam energy scan

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