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

Department of Physics

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

2 Citations (Scopus)

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
Publication status	Published - 2001 Dec 10

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.87.242301

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@article{e4ec69b54d614934be390fd21d468b7a,

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",

publisher = "American Physical Society",

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 - http://www.scopus.com/inward/record.url?scp=84888608933&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888608933&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.87.242301

DO - 10.1103/PhysRevLett.87.242301

M3 - 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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