Antilambda production in Au + Au Collisions at 11.7 A GeV/c

E917 Collaboration

doi:10.1103/PhysRevLett.87.242301

Antilambda production in Au + Au Collisions at 11.7 A GeV/c

E917 Collaboration

Physics Education

Argonne National Laboratory
University of Illinois at Chicago
University of California at Riverside
Columbia University
Brookhaven National Laboratory
Massachusetts Institute of Technology
University of Maryland, College Park
Yonsei University
University of Rochester

Research output: Contribution to journal › Journal article › peer-review

2 Scopus citations

Abstract

We present results for antilambda and antiproton production in Au + Au collisions at 11.7 A GeV/c including spectra and extracted invariant yields for both species in central and peripheral collisions in the rapidity range 1.0 <y < 1.4. The antilambda yield increases from dN_Λ^¯/dy = 1.2 ^+0.7+0.2_−0.6−0.2 × 10⁻³ in peripheral collisions to 19⁺⁴⁺³₋₅₋₂ × 10⁻³ in central collisions. The direct antiproton yield is deduced from the measured total antiproton spectra to extract the ratio of antilambda-to-direct-antiproton production.TheΛ^¯/p^¯ ratio near midrapidity increases from 0.26^+0.19+0.5_{−0.15−0.4} in peripheral collisions to 3.6^+4.7+2.7_{−1.8 −1.1} in central collisions, a value larger than current theoretical estimates.

Original language	English
Pages (from-to)	242301-1-242301-4
Journal	Physical Review Letters
Volume	87
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.87.242301
State	Published - 2001.12.10

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10.1103/PhysRevLett.87.242301

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@article{3683ceff4af343aea4d50ffe4a756842,

title = "Antilambda production in Au + Au Collisions at 11.7 A GeV/c",

abstract = "We present results for antilambda and antiproton production in Au + Au collisions at 11.7 A GeV/c including spectra and extracted invariant yields for both species in central and peripheral collisions in the rapidity range 1.0 Λ¯/dy = 1.2 +0.7+0.2−0.6−0.2 × 10−3 in peripheral collisions to 19+4+3−5−2 × 10−3 in central collisions. The direct antiproton yield is deduced from the measured total antiproton spectra to extract the ratio of antilambda-to-direct-antiproton production.TheΛ¯/p¯ ratio near midrapidity increases from 0.26+0.19+0.5−0.15−0.4 in peripheral collisions to 3.6+4.7+2.7−1.8 −1.1 in central collisions, a value larger than current theoretical estimates.",

author = "\{E917 Collaboration\} and Back, \{B. B.\} and Betts, \{R. R.\} and J. Chang and Chang, \{W. C.\} and Chi, \{C. Y.\} and Chu, \{Y. Y.\} and Cumming, \{J. B.\} and Dunlop, \{J. C.\} and W. Eldredge and Fung, \{S. Y.\} and R. Ganz and E. Garcia and A. Gillitzer and G. Heintzelman and Henning, \{W. F.\} and Hofman, \{D. J.\} and B. Holzman and Kang, \{J. H.\} and Kim, \{E. J.\} and Kim, \{S. Y.\} and Y. Kwon and D. McLeod and Mignerey, \{A. C.\} and M. Moulson and V. Nanal and Ogilvie, \{C. A.\} and R. Pak and A. Ruangma and Russ, \{D. E.\} and R. Seto and Stanskas, \{P. J.\} and Stephans, \{G. S.F.\} and H. Wang and Wolfs, \{F. L.H.\} and Wuosmaa, \{A. H.\} and H. Xiang and Xu, \{G. H.\} and Yao, \{H. B.\} and Zou, \{C. M.\}",

year = "2001",

month = dec,

day = "10",

doi = "10.1103/PhysRevLett.87.242301",

language = "English",

volume = "87",

pages = "242301--1--242301--4",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "24",

}

TY - JOUR

T1 - Antilambda production in Au + Au Collisions at 11.7 A GeV/c

AU - E917 Collaboration

AU - Back, B. B.

AU - Betts, R. R.

AU - Chang, J.

AU - Chang, W. C.

AU - Chi, C. Y.

AU - Chu, Y. Y.

AU - Cumming, J. B.

AU - Dunlop, J. C.

AU - Eldredge, W.

AU - Fung, S. Y.

AU - Ganz, R.

AU - Garcia, E.

AU - Gillitzer, A.

AU - Heintzelman, G.

AU - Henning, W. F.

AU - Hofman, D. J.

AU - Holzman, B.

AU - Kang, J. H.

AU - Kim, E. J.

AU - Kim, S. Y.

AU - Kwon, Y.

AU - McLeod, D.

AU - Mignerey, A. C.

AU - Moulson, M.

AU - Nanal, V.

AU - Ogilvie, C. A.

AU - Pak, R.

AU - Ruangma, A.

AU - Russ, D. E.

AU - Seto, R.

AU - Stanskas, P. J.

AU - Stephans, G. S.F.

AU - Wang, H.

AU - Wolfs, F. L.H.

AU - Wuosmaa, A. H.

AU - Xiang, H.

AU - Xu, G. H.

AU - Yao, H. B.

AU - Zou, C. M.

PY - 2001/12/10

Y1 - 2001/12/10

N2 - We present results for antilambda and antiproton production in Au + Au collisions at 11.7 A GeV/c including spectra and extracted invariant yields for both species in central and peripheral collisions in the rapidity range 1.0 Λ¯/dy = 1.2 +0.7+0.2−0.6−0.2 × 10−3 in peripheral collisions to 19+4+3−5−2 × 10−3 in central collisions. The direct antiproton yield is deduced from the measured total antiproton spectra to extract the ratio of antilambda-to-direct-antiproton production.TheΛ¯/p¯ ratio near midrapidity increases from 0.26+0.19+0.5−0.15−0.4 in peripheral collisions to 3.6+4.7+2.7−1.8 −1.1 in central collisions, a value larger than current theoretical estimates.

AB - We present results for antilambda and antiproton production in Au + Au collisions at 11.7 A GeV/c including spectra and extracted invariant yields for both species in central and peripheral collisions in the rapidity range 1.0 Λ¯/dy = 1.2 +0.7+0.2−0.6−0.2 × 10−3 in peripheral collisions to 19+4+3−5−2 × 10−3 in central collisions. The direct antiproton yield is deduced from the measured total antiproton spectra to extract the ratio of antilambda-to-direct-antiproton production.TheΛ¯/p¯ ratio near midrapidity increases from 0.26+0.19+0.5−0.15−0.4 in peripheral collisions to 3.6+4.7+2.7−1.8 −1.1 in central collisions, a value larger than current theoretical estimates.

UR - https://www.scopus.com/pages/publications/84888608933

U2 - 10.1103/PhysRevLett.87.242301

DO - 10.1103/PhysRevLett.87.242301

M3 - Journal article

AN - SCOPUS:84888608933

SN - 0031-9007

VL - 87

SP - 242301-1-242301-4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

ER -

Antilambda production in Au + Au Collisions at 11.7 A GeV/c

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