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Title: K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV

Abstract

We report on K*{sup 0} production at midrapidity in Au + Au and Cu + Cu collisions at {radical}(s{sub NN})=62.4 and 200 GeV collected by the Solenoid Tracker at the Relativistic Heavy Ion Collider detector. The K*{sup 0} is reconstructed via the hadronic decays K*{sup 0}{yields}K{sup +}{pi}{sup -} and K*{sup 0}{yields}K{sup -}{pi}{sup +}. Transverse momentum, p{sub T}, spectra are measured over a range of p{sub T} extending from 0.2 GeV/c up to 5 GeV/c. The center-of-mass energy and system size dependence of the rapidity density, dN/dy, and the average transverse momentum, <p{sub T}>, are presented. The measured N(K*{sup 0})/N(K) and N({phi})/N(K*{sup 0}) ratios favor the dominance of rescattering of decay daughters of K*{sup 0} over the hadronic regeneration for the K*{sup 0} production. In the intermediate p{sub T} region (2.0<p{sub T}<4.0 GeV/c), the elliptic flow parameter, v{sub 2}, and the nuclear modification factor, R{sub CP}, agree with the expectations from the quark coalescence model of particle production.

Authors:
; ;  [1]; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [2]
  1. Panjab University, Chandigarh 160014 (India)
  2. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
21596778
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034909; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ATOM-ATOM COLLISIONS; BROOKHAVEN RHIC; CENTER-OF-MASS SYSTEM; COLLISIONS; COPPER; GEV RANGE; GOLD; HADRONIC PARTICLE DECAY; KAONS MINUS; KAONS PLUS; PARTICLE PRODUCTION; PARTICLE RAPIDITY; QUARKS; RESCATTERING; TRANSVERSE MOMENTUM; ACCELERATORS; ATOM COLLISIONS; BOSONS; DECAY; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FERMIONS; HADRONS; HEAVY ION ACCELERATORS; KAONS; LINEAR MOMENTUM; MESONS; METALS; PARTICLE DECAY; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; SCATTERING; STORAGE RINGS; STRANGE MESONS; STRANGE PARTICLES; TRANSITION ELEMENTS

Citation Formats

Aggarwal, M. M., Bhati, A. K., Pruthi, N. K., Ahammed, Z., Dong, X., Grebenyuk, O., Hjort, E., Jacobs, P., Kikola, D. P., Kiryluk, J., Klein, S. R., Masui, H., Matis, H. S., Odyniec, G., Olson, D., Ploskon, M. A., Poskanzer, A. M., Powell, C. B., Ritter, H. G., and Rose, A. K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034909.
Aggarwal, M. M., Bhati, A. K., Pruthi, N. K., Ahammed, Z., Dong, X., Grebenyuk, O., Hjort, E., Jacobs, P., Kikola, D. P., Kiryluk, J., Klein, S. R., Masui, H., Matis, H. S., Odyniec, G., Olson, D., Ploskon, M. A., Poskanzer, A. M., Powell, C. B., Ritter, H. G., & Rose, A. K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV. United States. doi:10.1103/PHYSREVC.84.034909.
Aggarwal, M. M., Bhati, A. K., Pruthi, N. K., Ahammed, Z., Dong, X., Grebenyuk, O., Hjort, E., Jacobs, P., Kikola, D. P., Kiryluk, J., Klein, S. R., Masui, H., Matis, H. S., Odyniec, G., Olson, D., Ploskon, M. A., Poskanzer, A. M., Powell, C. B., Ritter, H. G., and Rose, A. Thu . "K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV". United States. doi:10.1103/PHYSREVC.84.034909.
@article{osti_21596778,
title = {K*{sup 0} production in Cu + Cu and Au + Au collisions at {radical}(s{sub NN})=62.4 GeV and 200 GeV},
author = {Aggarwal, M. M. and Bhati, A. K. and Pruthi, N. K. and Ahammed, Z. and Dong, X. and Grebenyuk, O. and Hjort, E. and Jacobs, P. and Kikola, D. P. and Kiryluk, J. and Klein, S. R. and Masui, H. and Matis, H. S. and Odyniec, G. and Olson, D. and Ploskon, M. A. and Poskanzer, A. M. and Powell, C. B. and Ritter, H. G. and Rose, A.},
abstractNote = {We report on K*{sup 0} production at midrapidity in Au + Au and Cu + Cu collisions at {radical}(s{sub NN})=62.4 and 200 GeV collected by the Solenoid Tracker at the Relativistic Heavy Ion Collider detector. The K*{sup 0} is reconstructed via the hadronic decays K*{sup 0}{yields}K{sup +}{pi}{sup -} and K*{sup 0}{yields}K{sup -}{pi}{sup +}. Transverse momentum, p{sub T}, spectra are measured over a range of p{sub T} extending from 0.2 GeV/c up to 5 GeV/c. The center-of-mass energy and system size dependence of the rapidity density, dN/dy, and the average transverse momentum, <p{sub T}>, are presented. The measured N(K*{sup 0})/N(K) and N({phi})/N(K*{sup 0}) ratios favor the dominance of rescattering of decay daughters of K*{sup 0} over the hadronic regeneration for the K*{sup 0} production. In the intermediate p{sub T} region (2.0<p{sub T}<4.0 GeV/c), the elliptic flow parameter, v{sub 2}, and the nuclear modification factor, R{sub CP}, agree with the expectations from the quark coalescence model of particle production.},
doi = {10.1103/PHYSREVC.84.034909},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}