Cross sections for meson–meson nonresonant reactions

Li, Yuqi; Xu, Xiao-Ming

doi:10.1016/j.nuclphysa.2007.08.009

Cited by 17 publications

(30 citation statements)

References 56 publications

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“…Since the √ s dependence of the cross section for a quark-interchange-induced reaction is mainly determined by 1 s | P | | P | [30], the √ s dependence of the cross section for a ρ-charmonium reaction in the former case is similar to one in the latter case. Hence, we do not plot ρ-charmonium dissociation cross sections in the case of V si + V ss , but we present parametrizations of these cross sections.…”

Section: Results Pertinent To Smearing In the Spin-spin Interactionmentioning

confidence: 98%

“…We denote by √ s p the square root of the Mandelstam variable corresponding to the peak cross section. Reactions Reactions (30) and (32) for the ρJ /ψ dissociation. a 1 and a 2 are in units of millibarns; b 1 , b 2 , d 0 , and √ s z are in units of GeV; c 1 and c 2 are dimensionless.…”

Section: Methodsmentioning

confidence: 99%

“…This guarantees that cross sections are calculated in a way independent of the center of mass. We then choose the center-of-mass frame where the cross section can be easily formulated [30]. We denote the mass and the four-momentum of meson i(i = qq, cc, qc, cq) by m i and P i = (E i , P i ), respectively.…”

Section: Cross-section Formulasmentioning

confidence: 99%

Section: Cross Section Formulasmentioning

confidence: 99%

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Temperature-dependent cross sections for charmonium dissociation in collisions with pions andρmesons in hadronic matter

Zhou

2012

Phys. Rev. C

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Meson-charmonium dissociation reactions governed by the quark interchange are studied with temperaturedependent quark potentials. Quark-antiquark relative-motion wave functions and masses of charmonia and charmed mesons are determined by the central spin-independent part of the potentials or by the central spinindependent part and a smeared spin-spin interaction. The prominent temperature dependence of the masses is found. Based on the potentials, the wave functions, and the meson masses, we obtain temperature-dependent cross sections for the fifteen dissociation reactions: πJ /ψ →D . The numerical cross sections are parametrized for future applications in hadronic matter. The particular temperature dependence of the J /ψ bound state leads to unusual behavior of the cross sections for endothermic J /ψ dissociation reactions. The quantum numbers of ψ and χ c cannot make their difference in mass in the temperature region 0.6T c T < T c but can make the ψ dissociation different from the χ c dissociation.

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Section: Results Pertinent To Smearing In the Spin-spin Interactionmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Cross-section Formulasmentioning

confidence: 99%

Section: Cross Section Formulasmentioning

confidence: 99%

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Temperature-dependent cross sections for charmonium dissociation in collisions with pions andρmesons in hadronic matter

Zhou

2012

Phys. Rev. C

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“…Cross-section formulas for the scattering are given in Refs. [4,8]. Here we briefly introduce the formulas.…”

Section: Cross-section and Dissociation-rate Formulasmentioning

confidence: 99%

Charmonium dissociation in collision with phi meson in hadronic matter

Ji,

2016

Preprint

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The φ-charmonium dissociation reactions in hadronic matter are studied. Unpolarised crossare calculated in the Born approximation, in the quark-interchange mechanism and with a temperature-dependent quark potential. The potential leads to remarkable temperature dependence of the cross sections. With the cross sections and the φ distribution function we calculate the dissociation rates of the charmonia in the interactions with the φ meson in hadronic matter. The dependence of the rates on temperature and charmonium momentum is meaningful to the influence of φ mesons on charmonium suppression.

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Temperature-dependent cross sections for meson–meson nonresonant reactions in hadronic matter

Zhang¹,

Xu²,

Ge³

2010

Nuclear Physics A

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We present a potential of which the short-distance part is given by one gluon exchange plus perturbative one-and two-loop corrections and of which the largedistance part exhibits a temperature-dependent constant value. The Schrödinger equation with this temperature-dependent potential yields a temperature dependence of the mesonic quark-antiquark relative-motion wave function and of meson masses. The temperature dependence of the potential, the wave function and the meson masses brings about temperature dependence of cross sections for the nonresonant reactions ππ → ρρ for I = 2, KK for I = 1, πK → ρK * for I = 3/2, πK * → ρK * for I = 3/2, ρK → ρK * for I = 3/2 and πK * → ρK for I = 3/2. As the temperature increases, the rise or fall of peak cross sections is determined by the increased radii of initial mesons, the loosened bound states of final mesons, and the total-mass difference of the initial and final mesons. The temperature-dependent cross sections and meson masses are parametrized.

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Cross sections for meson–meson nonresonant reactions

Cited by 17 publications

References 56 publications

Temperature-dependent cross sections for charmonium dissociation in collisions with pions andρmesons in hadronic matter

Temperature-dependent cross sections for charmonium dissociation in collisions with pions andρmesons in hadronic matter

Charmonium dissociation in collision with phi meson in hadronic matter

Temperature-dependent cross sections for meson–meson nonresonant reactions in hadronic matter

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