Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at √sNN = 130 GeV

T. Affolder; H. Akimoto; A. Akopian; M. G. Albrow; P. Amaral; S. R. Amendolia; D. Amidei; K. Anikeev; J. Antos; G. Apollinari; T. Arisawa; T. Asakawa; W. Ashmanskas; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; M. W. Bailey; S. Bailey; P. de Barbaro; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; S. Baroiant; M. Barone; G. Bauer; F. Bedeschi; S. Belforte; W. H. Bell; G. Bellettini; J. Bellinger; D. Benjamin; J. Bensinger; A. Beretvas; J. P. Berge; J. Berryhill; B. Bevensee; A. Bhatti; M. Binkley; D. Bisello; M. Bishai; R. E. Blair; C. Blocker; K. Bloom; B. Blumenfeld; S. Blusk; A. Bocci; A. Bodek; W. Bokhari; G. Bolla; D. Cronin-Hennessy; CDF Collaboration

doi:10.1103/PhysRevLett.87.102001

Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at √sNN = 130 GeV

T. Affolder, H. Akimoto, A. Akopian, M. G. Albrow, P. Amaral, S. R. Amendolia, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, T. Arisawa, T. Asakawa, W. Ashmanskas, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, M. W. Bailey, S. Bailey, P. de Barbaro, A. Barbaro-GaltieriV. E. Barnes, B. A. Barnett, S. Baroiant, M. Barone, G. Bauer, F. Bedeschi, S. Belforte, W. H. Bell, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, B. Bevensee, A. Bhatti, M. Binkley, D. Bisello, M. Bishai, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, S. Blusk, A. Bocci, A. Bodek, W. Bokhari, G. Bolla, D. Cronin-Hennessy, CDF Collaboration

Physics and Astronomy (Twin Cities)

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Abstract

We have measured the ratios of antiparticles to particles for charged pions, kaons, and protons near mid-rapidity in central Au+Au collisions at √sNN = 130 GeV. We observe ⟨π-⟩/⟨π+⟩ = 1.00±0.01(stat)±0.02(syst), ⟨K-⟩/⟨K+⟩ = 0.91±0.07(stat)±0.06(syst), and ⟨p^¯⟩/⟨p⟩ = 0.60±0.04(stat)±0.06(syst). The ⟨K-⟩/⟨K+⟩ and ⟨p^¯⟩/⟨p⟩ ratios give a consistent estimate of the baryo-chemical potential μB of 45 MeV, a factor of 5-6 smaller than in central Pb+Pb collisions at √sNN = 17.2 GeV.

Original language	English (US)
Pages (from-to)	102001-1-102001-6
Journal	Physical review letters
Volume	87
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.87.102001
State	Published - 2001

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Affolder, T., Akimoto, H., Akopian, A., Albrow, M. G., Amaral, P., Amendolia, S. R., Amidei, D., Anikeev, K., Antos, J., Apollinari, G., Arisawa, T., Asakawa, T., Ashmanskas, W., Azfar, F., Azzi-Bacchetta, P., Bacchetta, N., Bailey, M. W., Bailey, S., de Barbaro, P., ... CDF Collaboration (2001). Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at √sNN = 130 GeV. Physical review letters, 87(10), 102001-1-102001-6. https://doi.org/10.1103/PhysRevLett.87.102001

Affolder, T, Akimoto, H, Akopian, A, Albrow, MG, Amaral, P, Amendolia, SR, Amidei, D, Anikeev, K, Antos, J, Apollinari, G, Arisawa, T, Asakawa, T, Ashmanskas, W, Azfar, F, Azzi-Bacchetta, P, Bacchetta, N, Bailey, MW, Bailey, S, de Barbaro, P, Barbaro-Galtieri, A, Barnes, VE, Barnett, BA, Baroiant, S, Barone, M, Bauer, G, Bedeschi, F, Belforte, S, Bell, WH, Bellettini, G, Bellinger, J, Benjamin, D, Bensinger, J, Beretvas, A, Berge, JP, Berryhill, J, Bevensee, B, Bhatti, A, Binkley, M, Bisello, D, Bishai, M, Blair, RE, Blocker, C, Bloom, K, Blumenfeld, B, Blusk, S, Bocci, A, Bodek, A, Bokhari, W, Bolla, G, Cronin-Hennessy, D & CDF Collaboration 2001, 'Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at √sNN = 130 GeV', Physical review letters, vol. 87, no. 10, pp. 102001-1-102001-6. https://doi.org/10.1103/PhysRevLett.87.102001

@article{583ccc7096344a4490c2731996b3436c,

title = "Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at √sNN = 130 GeV",

abstract = "We have measured the ratios of antiparticles to particles for charged pions, kaons, and protons near mid-rapidity in central Au+Au collisions at √sNN = 130 GeV. We observe ⟨π-⟩/⟨π+⟩ = 1.00±0.01(stat)±0.02(syst), ⟨K-⟩/⟨K+⟩ = 0.91±0.07(stat)±0.06(syst), and ⟨p¯⟩/⟨p⟩ = 0.60±0.04(stat)±0.06(syst). The ⟨K-⟩/⟨K+⟩ and ⟨p¯⟩/⟨p⟩ ratios give a consistent estimate of the baryo-chemical potential μB of 45 MeV, a factor of 5-6 smaller than in central Pb+Pb collisions at √sNN = 17.2 GeV.",

author = "T. Affolder and H. Akimoto and A. Akopian and Albrow, {M. G.} and P. Amaral and Amendolia, {S. R.} and D. Amidei and K. Anikeev and J. Antos and G. Apollinari and T. Arisawa and T. Asakawa and W. Ashmanskas and F. Azfar and P. Azzi-Bacchetta and N. Bacchetta and Bailey, {M. W.} and S. Bailey and {de Barbaro}, P. and A. Barbaro-Galtieri and Barnes, {V. E.} and Barnett, {B. A.} and S. Baroiant and M. Barone and G. Bauer and F. Bedeschi and S. Belforte and Bell, {W. H.} and G. Bellettini and J. Bellinger and D. Benjamin and J. Bensinger and A. Beretvas and Berge, {J. P.} and J. Berryhill and B. Bevensee and A. Bhatti and M. Binkley and D. Bisello and M. Bishai and Blair, {R. E.} and C. Blocker and K. Bloom and B. Blumenfeld and S. Blusk and A. Bocci and A. Bodek and W. Bokhari and G. Bolla and D. Cronin-Hennessy and {CDF Collaboration}",

year = "2001",

doi = "10.1103/PhysRevLett.87.102001",

language = "English (US)",

volume = "87",

pages = "102001--1--102001--6",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "10",

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TY - JOUR

T1 - Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at √sNN = 130 GeV

AU - Affolder, T.

AU - Akimoto, H.

AU - Akopian, A.

AU - Albrow, M. G.

AU - Amaral, P.

AU - Amendolia, S. R.

AU - Amidei, D.

AU - Anikeev, K.

AU - Antos, J.

AU - Apollinari, G.

AU - Arisawa, T.

AU - Asakawa, T.

AU - Ashmanskas, W.

AU - Azfar, F.

AU - Azzi-Bacchetta, P.

AU - Bacchetta, N.

AU - Bailey, M. W.

AU - Bailey, S.

AU - de Barbaro, P.

AU - Barbaro-Galtieri, A.

AU - Barnes, V. E.

AU - Barnett, B. A.

AU - Baroiant, S.

AU - Barone, M.

AU - Bauer, G.

AU - Bedeschi, F.

AU - Belforte, S.

AU - Bell, W. H.

AU - Bellettini, G.

AU - Bellinger, J.

AU - Benjamin, D.

AU - Bensinger, J.

AU - Beretvas, A.

AU - Berge, J. P.

AU - Berryhill, J.

AU - Bevensee, B.

AU - Bhatti, A.

AU - Binkley, M.

AU - Bisello, D.

AU - Bishai, M.

AU - Blair, R. E.

AU - Blocker, C.

AU - Bloom, K.

AU - Blumenfeld, B.

AU - Blusk, S.

AU - Bocci, A.

AU - Bodek, A.

AU - Bokhari, W.

AU - Bolla, G.

AU - Cronin-Hennessy, D.

AU - CDF Collaboration

PY - 2001

Y1 - 2001

N2 - We have measured the ratios of antiparticles to particles for charged pions, kaons, and protons near mid-rapidity in central Au+Au collisions at √sNN = 130 GeV. We observe ⟨π-⟩/⟨π+⟩ = 1.00±0.01(stat)±0.02(syst), ⟨K-⟩/⟨K+⟩ = 0.91±0.07(stat)±0.06(syst), and ⟨p¯⟩/⟨p⟩ = 0.60±0.04(stat)±0.06(syst). The ⟨K-⟩/⟨K+⟩ and ⟨p¯⟩/⟨p⟩ ratios give a consistent estimate of the baryo-chemical potential μB of 45 MeV, a factor of 5-6 smaller than in central Pb+Pb collisions at √sNN = 17.2 GeV.

AB - We have measured the ratios of antiparticles to particles for charged pions, kaons, and protons near mid-rapidity in central Au+Au collisions at √sNN = 130 GeV. We observe ⟨π-⟩/⟨π+⟩ = 1.00±0.01(stat)±0.02(syst), ⟨K-⟩/⟨K+⟩ = 0.91±0.07(stat)±0.06(syst), and ⟨p¯⟩/⟨p⟩ = 0.60±0.04(stat)±0.06(syst). The ⟨K-⟩/⟨K+⟩ and ⟨p¯⟩/⟨p⟩ ratios give a consistent estimate of the baryo-chemical potential μB of 45 MeV, a factor of 5-6 smaller than in central Pb+Pb collisions at √sNN = 17.2 GeV.

UR - http://www.scopus.com/inward/record.url?scp=85039590009&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85039590009&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.87.102001

DO - 10.1103/PhysRevLett.87.102001

M3 - Article

AN - SCOPUS:85039590009

SN - 0031-9007

VL - 87

SP - 102001-1-102001-6

JO - Physical review letters

JF - Physical review letters

IS - 10

ER -

Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at √sNN = 130 GeV

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