P. Filip
Joint Institute for Nuclear Research
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Featured researches published by P. Filip.
Physical Review C | 2017
L. Adamczyk; J. K. Adkins; G. Agakishiev; M. M. Aggarwal; Z. Ahammed; N. N. Ajitanand; I. Alekseev; D. M. Anderson; R. Aoyama; A. Aparin; D. Arkhipkin; E. C. Aschenauer; M. U. Ashraf; A. Attri; G. S. Averichev; X. Bai; Bairathi; Arabinda Behera; R. Bellwied; A. Bhasin; Ashok Kumar Bhati; P. Bhattarai; Jaroslav Bielcik; J. Bielcikova; L. C. Bland; I. Bordyuzhin; J. Bouchet; J. D. Brandenburg; A. V. Brandin; D. Brown
© 2017 American Physical Society. We present measurements of bulk properties of the matter produced in Au+Au collisions at sNN=7.7,11.5,19.6,27, and 39 GeV using identified hadrons (π±, K±, p, and p) from the STAR experiment in the Beam Energy Scan (BES) Program at the Relativistic Heavy Ion Collider (RHIC). Midrapidity (|y| < 0.1) results for multiplicity densities dN/dy, average transverse momenta (pT), and particle ratios are presented. The chemical and kinetic freeze-out dynamics at these energies are discussed and presented as a function of collision centrality and energy. These results constitute the systematic measurements of bulk properties of matter formed in heavy-ion collisions over a broad range of energy (or baryon chemical potential) at RHIC.
Physical Review C | 2016
L. Adamczyk; J. K. Adkins; G. Agakishiev; M. M. Aggarwal; Z. Ahammed; I. Alekseev; D. M. Anderson; R. Aoyama; A. Aparin; D. Arkhipkin; E. C. Aschenauer; M. U. Ashraf; A. Attri; G. S. Averichev; X. Bai; V. Bairathi; R. Bellwied; A. Bhasin; Ashok Kumar Bhati; P. Bhattarai; Jaroslav Bielcik; J. Bielcikova; L. C. Bland; I. Bordyuzhin; J. Bouchet; J. D. Brandenburg; A. V. Brandin; I. Bunzarov; J. M. Butterworth; H. Caines
We present a measurement of the inclusive production of Upsilon mesons in U+U collisions at 193 GeV at mid-rapidity (|y| < 1). Previous studies in central Au+Au collisions at 200 GeV show a suppression of Upsilon(1S+2S+3S) production relative to expectations from the Upsilon yield in p+p collisions scaled by the number of binary nucleon-nucleon collisions (Ncoll), with an indication that the Upsilon(1S) state is also suppressed. The present measurement extends the number of participant nucleons in the collision (Npart) by 20% compared to Au+Au collisions, and allows us to study a system with higher energy density. We observe a suppression in both the Upsilon(1S+2S+3S) and Upsilon(1S) yields in central U+U data, which consolidates and extends the previously observed suppression trend in Au+Au collisions.
