Measurement of K-S(0) and K*(0) in p plus p, d plus Au, and Cu plus Cu collisions at root s(NN)=200 GeV

  • Adare, A.
  • Afanasiev, S.
  • Aidala, C.
  • Ajitanand, N. N.
  • Akiba, Y.
  • ... Kim, Yong Kyun
  • 외 583명
Citations

WEB OF SCIENCE

35
Citations

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37

초록

The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of K-S(0) and K*(0) meson production at midrapidity in p + p, d + Au, and Cu + Cu collisions at root s(NN) = 200 GeV. The K-S(0) and K*(0) mesons are reconstructed via their K-S(0) -> pi(0)(-> gamma gamma) pi(0)(-> gamma gamma) and K*(0) -> K-+/-pi(-/+) decay modes, respectively. The measured transverse-momentum spectra are used to determine the nuclear modification factor of K-S(0) and K*(0) mesons in d + Au and Cu + Cu collisions at different centralities. In the d + Au collisions, the nuclear modification factor of K-S(0) and K*(0) mesons is almost constant as a function of transverse momentum and is consistent with unity, showing that cold-nuclear-matter effects do not play a significant role in the measured kinematic range. In Cu + Cu collisions, within the uncertainties no nuclear modification is registered in peripheral collisions. In central collisions, both mesons show suppression relative to the expectations from the p + p yield scaled by the number of binary nucleon-nucleon collisions in the Cu + Cu system. In the p(T) range 2-5 GeV/c, the strange mesons (K-S(0), K*(0)) similarly to the phi meson with hidden strangeness, showan intermediate suppression between the more suppressed light quark mesons (pi(0)) and the nonsuppressed baryons (p, (p) over bar). At higher transverse momentum, p(T) > 5 GeV/c, production of all particles is similarly suppressed by a factor of approximate to 2.

키워드

LARGE TRANSVERSE-MOMENTUMPHENIXDEPENDENCEQCD
제목
Measurement of K-S(0) and K*(0) in p plus p, d plus Au, and Cu plus Cu collisions at root s(NN)=200 GeV
저자
Adare, A.Afanasiev, S.Aidala, C.Ajitanand, N. N.Akiba, Y.Akimoto, R.Al-Bataineh, H.Alexander, J.Alfred, M.Angerami, A.Aoki, K.Apadula, N.Aphecetche, L.Aramaki, Y.Armendariz, R.Aronson, S. H.Asai, J.Asano, H.Atomssa, E. T.Averbeck, R.Awes, T. C.Azmoun, B.Babintsev, V.Bai, M.Baksay, G.Baksay, L.Baldisseri, A.Bandara, N. S.Bannier, B.Barish, K. N.Barnes, P. D.Bassalleck, B.Basye, A. T.Bathe, S.Batsouli, S.Baublis, V.Baumann, C.Bazilevsky, A.Beaumier, M.Beckman, S.Belikov, S.Belmont, R.Bennett, R.Berdnikov, A.Berdnikov, Y.Bhom, J. H.Bickley, A. A.Black, D.Blau, D. S.Boissevain, J. G.Bok, J. S.Borel, H.Boyle, K.Brooks, M. L.Bryslawskyj, J.Buesching, H.Bumazhnov, V.Bunce, G.Butsyk, S.Campbell, S.Caringi, A.Chang, B. S.Charvet, J. -L.Chen, C. -H.Chernichenko, S.Chi, C. Y.Chiba, J.Chiu, M.Choi, I. J.Choi, J. B.Choudhury, R. K.Christiansen, P.Chujo, T.Chung, P.Churyn, A.Chvala, O.Cianciolo, V.Citron, Z.Cleven, C. R.Cole, B. A.Comets, M. P.del Valle, Z. 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DOI
10.1103/PhysRevC.90.054905
발행일
2014-11
유형
Article
저널명
Physical Review C - Nuclear Physics
90
5
페이지
1 ~ 18

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