Λc enhancement from strongly coupled QGP

S. Yasui; S. H. Lee; K. Ohnishi; I. K. Yoo; C. M. Koi

doi:10.1007/s12648-011-0142-3

Λ_c enhancement from strongly coupled QGP

S. Yasui, S. H. Lee, K. Ohnishi, I. K. Yoo, C. M. Koi

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We propose the enhancement of Λ_c yield in heavy ion collisions at RHIC and LHC as a novel signal for the existence of diquarks in the strongly coupled quark-gluon plasma produced in these collisions as well as in the Λ _c . Assuming that stable bound diquarks can exist in the quark-gluon plasma, we argue that the yield of Λ _c would be increased by two-body collisions between [ud] diquarks and c quarks, in addition to normal three-body collisions among u, d and c quarks. A quantitative study of this effect based on the coalescence model shows that including the contribution of diquarks to Λ _c production indeed leads to a substantial enhancement of the Λ _c /D ratio in heavy ion collisions.

Original language	English
Pages (from-to)	1043-1046
Number of pages	4
Journal	Indian Journal of Physics
Volume	85
Issue number	7
DOIs	https://doi.org/10.1007/s12648-011-0142-3
Publication status	Published - 2011 Jul

Bibliographical note

Funding Information:
This work was supported by the Korea Research Foundation KRF-2006-C00011, the Korea Science and Engineering Foundation R01-2005-000-10334-0, the US National Science Foundation under Grant No. PHY-0457265 and the Welch Foundation under Grant No. A-1358, and the National Science Council of Taiwan under Grant No. NSC96-2112-M002-021.

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1007/s12648-011-0142-3

Cite this

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title = "Λc enhancement from strongly coupled QGP",

abstract = "We propose the enhancement of Λc yield in heavy ion collisions at RHIC and LHC as a novel signal for the existence of diquarks in the strongly coupled quark-gluon plasma produced in these collisions as well as in the Λ c . Assuming that stable bound diquarks can exist in the quark-gluon plasma, we argue that the yield of Λ c would be increased by two-body collisions between [ud] diquarks and c quarks, in addition to normal three-body collisions among u, d and c quarks. A quantitative study of this effect based on the coalescence model shows that including the contribution of diquarks to Λ c production indeed leads to a substantial enhancement of the Λ c /D ratio in heavy ion collisions.",

author = "S. Yasui and Lee, {S. H.} and K. Ohnishi and Yoo, {I. K.} and Koi, {C. M.}",

note = "Funding Information: This work was supported by the Korea Research Foundation KRF-2006-C00011, the Korea Science and Engineering Foundation R01-2005-000-10334-0, the US National Science Foundation under Grant No. PHY-0457265 and the Welch Foundation under Grant No. A-1358, and the National Science Council of Taiwan under Grant No. NSC96-2112-M002-021.",

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AU - Lee, S. H.

AU - Ohnishi, K.

AU - Yoo, I. K.

AU - Koi, C. M.

N1 - Funding Information: This work was supported by the Korea Research Foundation KRF-2006-C00011, the Korea Science and Engineering Foundation R01-2005-000-10334-0, the US National Science Foundation under Grant No. PHY-0457265 and the Welch Foundation under Grant No. A-1358, and the National Science Council of Taiwan under Grant No. NSC96-2112-M002-021.

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N2 - We propose the enhancement of Λc yield in heavy ion collisions at RHIC and LHC as a novel signal for the existence of diquarks in the strongly coupled quark-gluon plasma produced in these collisions as well as in the Λ c . Assuming that stable bound diquarks can exist in the quark-gluon plasma, we argue that the yield of Λ c would be increased by two-body collisions between [ud] diquarks and c quarks, in addition to normal three-body collisions among u, d and c quarks. A quantitative study of this effect based on the coalescence model shows that including the contribution of diquarks to Λ c production indeed leads to a substantial enhancement of the Λ c /D ratio in heavy ion collisions.

AB - We propose the enhancement of Λc yield in heavy ion collisions at RHIC and LHC as a novel signal for the existence of diquarks in the strongly coupled quark-gluon plasma produced in these collisions as well as in the Λ c . Assuming that stable bound diquarks can exist in the quark-gluon plasma, we argue that the yield of Λ c would be increased by two-body collisions between [ud] diquarks and c quarks, in addition to normal three-body collisions among u, d and c quarks. A quantitative study of this effect based on the coalescence model shows that including the contribution of diquarks to Λ c production indeed leads to a substantial enhancement of the Λ c /D ratio in heavy ion collisions.

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