Showing papers by "Malgorzata Anna Janik published in 2003"
TL;DR: The back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.
Abstract: Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudorapidity range and full azimuth in Au+Au and p+p collisions at roots(NN)=200 GeV. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes previously observed in high-energy collisions. A strong back-to-back correlation exists for p+p and peripheral Au+Au. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.
631 citations
TL;DR: High statistics measurements of inclusive charged hadron production in Au+Au and p+p collisions at sqrt[s(NN)]=200 GeV report no evidence of p(T)-dependent suppression, which may be expected from models incorporating jet attenuation in cold nuclear matter or scattering of fragmentation hadrons.
Abstract: We report high statistics measurements of inclusive charged hadron production in Au+Au and p+p collisions at rootS(NN)=200 GeV. A large, approximately constant hadron suppression is observed in central Au+Au collisions for 5
628 citations
TL;DR: These results demonstrate that the strong suppression of the inclusive yield and back-to-back correlations at high p(T) previously observed in central Au+Au collisions are due to final-state interactions with the dense medium generated in such collisions.
Abstract: We report measurements of single-particle inclusive spectra and two-particle azimuthal distributions of charged hadrons at high transverse momentum (high p(T)) in minimum bias and central d+Au collisions at sqrt[s(NN)]=200 GeV. The inclusive yield is enhanced in d+Au collisions relative to binary-scaled p+p collisions, while the two-particle azimuthal distributions are very similar to those observed in p+p collisions. These results demonstrate that the strong suppression of the inclusive yield and back-to-back correlations at high p(T) previously observed in central Au+Au collisions are due to final-state interactions with the dense medium generated in such collisions.
604 citations
01 Mar 2003-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: An introduction to the STAR detector and a brief overview of the physics goals of the experiment can be found in this article, where the authors also present a detailed overview of their experiments.
Abstract: An introduction to the STAR detector and a brief overview of the physics goals of the experiment are presented.
581 citations
TL;DR: Azimuthal anisotropy (v(2)) and two-particle angular correlations of high p(T) charged hadrons have been measured in Au+Au collisions at sqrt[s(NN)]=130 GeV for transverse momenta up to 6 GeV/c, where hard processes are expected to contribute significantly.
Abstract: Azimuthal anisotropy (v(2)) and two-particle angular correlations of high p(T) charged hadrons have been measured in Au+Au collisions at roots(NN) = 130 GeV for transverse momenta up to 6 GeV/c, where hard processes are expected to contribute significantly. The two-particle angular correlations exhibit elliptic flow and a structure suggestive of fragmentation of high p(T) partons. The monotonic rise of v(2)(p(T)) for p(T) 3 GeV/c, a saturation of v(2) is observed which persists up to p(T) = 6 GeV/c.
161 citations
TL;DR: The balance function is a new observable based on the principle that charge is locally conserved when particles are pair produced as mentioned in this paper, and it is measured for charged particle pairs and identified charged pion pairs in Au + Au collisions at √(sNN) = 130 GeV at the Relativistic Heavy Ion Collider using STAR.
Abstract: The balance function is a new observable based on the principle that charge is locally conserved when particles are pair produced. Balance functions have been measured for charged particle pairs and identified charged pion pairs in Au + Au collisions at √(sNN) = 130 GeV at the Relativistic Heavy Ion Collider using STAR. Balance functions for peripheral collisions have widths consistent with model predictions based on a superposition of nucleon-nucleon scattering. Widths in central collisions are smaller, consistent with trends predicted by models incorporating late hadronization.
88 citations
TL;DR: In this article, the results of charged particle fluctuations measurements in Au+Au collisions at rootS(NN)=130 GeV using the STAR detector are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons, and protons.
Abstract: We present the results of charged particle fluctuations measurements in Au+Au collisions at rootS(NN)=130 GeV using the STAR detector. Dynamical fluctuations measurements are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons, and protons. The net charge dynamical fluctuations are found to be large and negative providing clear evidence that positive and negative charged p article production is correlated within the pseudorapidity range investigated. Correlations are smaller than expected based on model-dependent predictions for a resonance gas or a quark-gluon gas which undergoes fast hadronization and freeze-out. Qualitative agreement is found with comparable scaled p+p measurements and a heavy ion jet interaction generation model calculation based on independent particle collisions, although a small deviation from the 1/N scaling dependence expected from this model is observed.
76 citations
TL;DR: In this article, the results of charged particle fluctuations measurements in Au+Au collisions at √(s NN) = 130 GeV using the STAR detector are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons and protons.
Abstract: We present the results of charged particle fluctuations measurements in Au+Au collisions at We present the results of charged particle fluctuations measurements in Au+Au collisions at √(s NN) = 130 GeV using the STAR detector. Dynamical fluctuations measurements are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons, and protons. The net charge dynamical fluctuations are found to be large and negative providing clear evidence that positive and negative charged particle production is correlated within the pseudorapidity range investigated. Correlations are smaller than expected based on model-dependent predictions for a resonance gas or a quark-gluon gas which undergoes fast hadronization and freeze-out. Qualitative agreement is found with comparable scaled p+p measurements and a heavy ion jet interaction generation model calculation based on independent particle collisions, although a small deviation from the 1/N scaling dependence expected from this model is observed.
74 citations
TL;DR: A high-statistics measurement of the three-pion correlation function is made and the normalized three-particle correlator is calculated to obtain a quantitative measurements of the degree of chaoticity of the pion source.
Abstract: Data from the first physics run at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory, Au+Au collisions at roots(NN)=130 GeV, have been analyzed by the STAR Collaboration using three-pion correlations with charged pions to study whether pions are emitted independently at freeze-out. We have made a high-statistics measurement of the three-pion correlation function and calculated the normalized three-particle correlator to obtain a quantitative measurement of the degree of chaoticity of the pion source. It is found that the degree of chaoticity seems to increase with increasing particle multiplicity.
47 citations
TL;DR: In this article, the authors showed that a fraction of the net baryon number from the initial system is present in the excess of hyperons over antihyperons at mid-rapidity.
36 citations
TL;DR: Pion-kaon correlation functions are constructed from central Au+Au STAR data taken at roots(NN)=130 GeV by the STAR detector at the Relativistic Heavy Ion Collider (RHIC) as mentioned in this paper.
Abstract: Pion-kaon correlation functions are constructed from central Au+Au STAR data taken at roots(NN)=130 GeV by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). The results suggest that pions and kaons are not emitted at the same average space-time point. Space-momentum correlations, i.e., transverse flow, lead to a space-time emission asymmetry of pions and kaons that is consistent with the data. This result provides new independent evidence that the system created at RHIC undergoes a collective transverse expansion.
TL;DR: Pion-kaon correlation functions constructed from central Au+Au STAR data taken at sqrt[s(NN)]=130 GeV by the STAR detector at the Relativistic Heavy Ion Collider suggest that pions and kaons are not emitted at the same average space-time point.
01 Mar 2003-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: The STAR Silicon Strip Detector (SSD) as mentioned in this paper completes the three layers of the SVT to make an inner tracking system located inside the TPC, which provides two-dimensional hit position and energy loss measurements for charged particles, improving the extrapolation of TPC tracks through SVT hits.
Abstract: The STAR Silicon Strip Detector (SSD) completes the three layers of the Silicon Vertex Tracker (SVT) to make an inner tracking system located inside the Time Projection Chamber (TPC). This additional fourth layer provides two-dimensional hit position and energy loss measurements for charged particles, improving the extrapolation of TPC tracks through SVT hits. To match the high multiplicity of central Au+Au collisions at RHIC the double-sided silicon strip technology was chosen which makes the SSD a half-million channels detector. Dedicated electronics have been designed for both readout and control. Also a novel technique of bonding, the Tape Automated Bonding, was used to fulfill the large number of bounds to be done. All aspects of the SSD are shortly described here and test performances of produced detection modules as well as simulated results on hit reconstruction are given.
TL;DR: In this paper, the authors present a survey of the state-of-the-art work in the field of artificial intelligence, including the following: Averichev et al.
Abstract: C. Adler, Z. Ahammed, C. Allgower, M. Anderson, G. S. Averichev, J. Balewski, O. Barannikova, L. S. Barnby, J. Baudot, S. Bekele, V.V. Belaga, R. Bellwied, J. Berger, H. Bichsel, L. C. Bland, C. O. Blyth, B. E. Bonner, R. Bossingham, A. Boucham, A. Brandin, H. Caines, M. Calderón de la Barca Sánchez, A. Cardenas, J. Carroll, J. Castillo, M. Castro, D. Cebra, S. Chattopadhyay, M. L. Chen, Y. Chen, S. P. Chernenko, M. Cherney, A. Chikanian, B. Choi, W. Christie, J. P. Coffin, L. Conin, T. M. Cormier, J. G. Cramer, H. J. Crawford, M. DeMello, W. S. Deng, A. A. Derevschikov, L. Didenko, J. E. Draper, V. B. Dunin, J. C. Dunlop, V. Eckardt, L. G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, P. Fachini, M. I. Ferguson, E. Finch, Y. Fisyak, D. Flierl, K. J. Foley, N. Gagunashvili, J. Gans, M. Germain, F. Geurts, V. Ghazikhanian, J. Grabski, O. Grachov, D. Greiner, V. Grigoriev, E. Gushin, T. J. Hallman, D. Hardtke, J.W. Harris, M. Heffner, S. Heppelmann, T. Herston, B. Hippolyte, A. Hirsch, E. Hjort, G.W. Hoffmann, M. Horsley, H. Z. Huang, T. J. Humanic, H. Hümmler, G. J. Igo, A. Ishihara, Yu. I. Ivanshin, P. Jacobs, W.W. Jacobs, M. Janik, I. Johnson, P. G. Jones, E. Judd, M. Kaneta, M. Kaplan, D. Keane, A. Khodinov, A. Kisiel, J. Klay, S. R. Klein, A. Klyachko, A. S. Konstantinov, L. Kotchenda, A. D. Kovalenko, M. Kramer, P. Kravtsov, K. Krueger, C. Kuhn, A. I. Kulikov, G. J. Kunde, C. L. Kunz, R. Kh. Kutuev, A. A. Kuznetsov, J. Lamas-Valverde, M. A. C. Lamont, J. M. Landgraf, S. Lange, C. P. Lansdell, B. Lasiuk, F. Laue, A. Lebedev, T. LeCompte, V. M. Leontiev, P. Leszczynski, M. J. LeVine, Q. Li, Q. Li, S. J. Lindenbaum, M. A. Lisa, T. Ljubicic, W. J. Llope, G. LoCurto, H. Long, R. S. Longacre, M. Lopez-Noriega, W. A. Love, D. Lynn, L. Madansky, R. Majka, A. Maliszewski, S. Margetis, L. Martin, J. Marx, H. S. Matis, Yu. A. Matulenko, T. S. McShane, Yu. Melnick, A. Meschanin, Z. Milosevich, N. G. Minaev, J. Mitchell, V. A. Moiseenko, D. Moltz, C. F. Moore, V. Morozov, M. M. de Moura, M. G. Munhoz, G. S. Mutchler, J. M. Nelson, P. Nevski, V. A. Nikitin, L.V. Nogach, B. Norman, S. B. Nurushev, J. Nystrand, G. Odyniec, A. Ogawa, C. A. Ogilvie, M. Oldenburg, D. Olson, G. Paic, S. U. Pandey, Y. Panebratsev, S.Y. Panitkin, A. I. Pavlinov, T. Pawlak, V. Perevoztchikov, W. Peryt, V. A Petrov, W. Pinganaud, E. Platner, J. Pluta, N. Porile, J. Porter, A. M. Poskanzer, E. Potrebenikova, D. Prindle, C. Pruneau, S. Radomski, G. Rai, O. Ravel, R. L. Ray, S.V. Razin, D. Reichhold, J. Reid, F. Retiere, A. Ridiger, H. G. Ritter, J. B. Roberts, O.V. Rogachevski, C. Roy, D. Russ, V. Rykov, I. Sakrejda, J. Sandweiss, A. C. Saulys, I. Savin, J. Schambach, R. P. Scharenberg, N. Schmitz, L. S. Schroeder, A. Schüttauf, K. Schweda, J. Seger, D. Seliverstov, P. Seyboth, K. E. Shestermanov, S. S. Shimanskii, V. S. Shvetcov, G. Skoro, N. Smirnov, R. Snellings, J. Sowinski, H. M. Spinka, B. Srivastava, E. J. Stephenson, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, H. Stroebele, C. Struck, A. A. P. Suaide, E. Sugarbaker, C. Suire, T. J. M. Symons, A. Szanto de Toledo, P. Szarwas, J. Takahashi, A. H. Tang, J. H. Thomas, V. Tikhomirov, T. Trainor, S. Trentalange, M. Tokarev, M. B. Tonjes, V. Trofimov, O. Tsai, K. Turner, T. Ullrich, D. G. Underwood, G. Van Buren, A. M. VanderMolen, A. Vanyashin, I. M. Vasilevski, A. N. Vasiliev, S. E.Vigdor, S. A.Voloshin, F.Wang, H.Ward, R.Wells, T.Wenaus, G. D.Westfall, C.Whitten, Jr., H.Wieman, R.Willson, S.W. Wissink, R. Witt, N. Xu, Z. Xu, A. E. Yakutin, E. Yamamoto, J. Yang, P. Yepes, A. Yokosawa, V. I. Yurevich, Y.V. Zanevski, J. Zhang, W. M. Zhang, R. Zoulkarneev, and A. N. Zubarev (Received 29 January 2003; published 18 March 2003)
Journal Article•
Journal Article•
TL;DR: C. Adler, Z. Allgower, C. Anderson, J. Balewski, O. Barannikova, L. Lynn, D. Lynn-Nga, M. Majka, R. Marx, G. Leontiev, P. Ljubicic, I. Lindenbaum, W. Long, H. LeVine, Q. LeCompte, T. Khodinov, A. Kravtsov, K
Journal Article•
TL;DR: Multi-Strange Baryon Production in Au-Au collisions at s NN = 130 GeV J.W.Hjort, 18 G.M. Aggarwal, 25 Z. Ahammed, 28 J.D. Bhardwaj, 29 P. Ghazikhanian, 6 P.E. Ghosh, 38 J.S. Gagliardi, 35 M.G. Fu, 42 C.A. Harris, 43 M.
Abstract: Multi-Strange Baryon Production in Au-Au collisions at s NN = 130 GeV J. Adams, 3 C. Adler, 12 M.M. Aggarwal, 25 Z. Ahammed, 28 J. Amonett, 17 B.D. Anderson, 17 M. Anderson, 5 D. Arkhipkin, 11 G.S. Averichev, 10 S.K. Badyal, 16 J. Balewski, 13 O. Barannikova, 28, 10 L.S. Barnby, 17 J. Baudot, 15 S. Bekele, 24 V.V. Belaga, 10 R. Bellwied, 41 J. Berger, 12 B.I. Bezverkhny, 43 S. Bhardwaj, 29 P. Bhaskar, 38 A.K. Bhati, 25 H. Bichsel, 40 A. Billmeier, 41 L.C. Bland, 2 C.O. Blyth, 3 B.E. Bonner, 30 M. Botje, 23 A. Boucham, 34 A. Brandin, 21 A. Bravar, 2 R.V. Cadman, 1 X.Z. Cai, 33 H. Caines, 43 M. Calder´ n de la Barca S´ nchez, 2 J. Carroll, 18 o a J. Castillo, 18 M. Castro, 41 D. Cebra, 5 P. Chaloupka, 9 S. Chattopadhyay, 38 H.F. Chen, 32 Y. Chen, 6 S.P. Chernenko, 10 M. Cherney, 8 A. Chikanian, 43 B. Choi, 36 W. Christie, 2 J.P. Coffin, 15 T.M. Cormier, 41 J.G. Cramer, 40 H.J. Crawford, 4 D. Das, 38 S. Das, 38 A.A. Derevschikov, 27 L. Didenko, 2 T. Dietel, 12 X. Dong, 32, 18 J.E. Draper, 5 F. Du, 43 A.K. Dubey, 14 V.B. Dunin, 10 J.C. Dunlop, 2 M.R. Dutta Majumdar, 38 V. Eckardt, 19 L.G. Efimov, 10 V. Emelianov, 21 J. Engelage, 4 G. Eppley, 30 B. Erazmus, 34 M. Estienne, 34 P. Fachini, 2 V. Faine, 2 J. Faivre, 15 R. Fatemi, 13 K. Filimonov, 18 P. Filip, 9 E. Finch, 43 Y. Fisyak, 2 D. Flierl, 12 K.J. Foley, 2 J. Fu, 42 C.A. Gagliardi, 35 M.S. Ganti, 38 T.D. Gutierrez, 5 N. Gagunashvili, 10 J. Gans, 43 L. Gaudichet, 34 M. Germain, 15 F. Geurts, 30 V. Ghazikhanian, 6 P. Ghosh, 38 J.E. Gonzalez, 6 O. Grachov, 41 V. Grigoriev, 21 S. Gronstal, 8 D. Grosnick, 37 M. Guedon, 15 S.M. Guertin, 6 A. Gupta, 16 E. Gushin, 21 T.J. Hallman, 2 D. Hardtke, 18 J.W. Harris, 43 M. Heinz, 43 T.W. Henry, 35 S. Heppelmann, 26 T. Herston, 28 B. Hippolyte, 43 A. Hirsch, 28 E. Hjort, 18 G.W. Hoffmann, 36 M. Horsley, 43 H.Z. Huang, 6 S.L. Huang, 32 T.J. Humanic, 24 G. Igo, 6 A. Ishihara, 36 P. Jacobs, 18 W.W. Jacobs, 13 M. Janik, 39 I. Johnson, 18 P.G. Jones, 3 E.G. Judd, 4 S. Kabana, 43 M. Kaneta, 18 M. Kaplan, 7 D. Keane, 17 J. Kiryluk, 6 A. Kisiel, 39 J. Klay, 18 S.R. Klein, 18 A. Klyachko, 13 D.D. Koetke, 37 T. Kollegger, 12 A.S. Konstantinov, 27 M. Kopytine, 17 L. Kotchenda, 21 A.D. Kovalenko, 10 M. Kramer, 22 P. Kravtsov, 21 K. Krueger, 1 C. Kuhn, 15 A.I. Kulikov, 10 A. Kumar, 25 G.J. Kunde, 43 C.L. Kunz, 7 R.Kh. Kutuev, 11 A.A. Kuznetsov, 10 M.A.C. Lamont, 3 J.M. Landgraf, 2 S. Lange, 12 C.P. Lansdell, 36 B. Lasiuk, 43 F. Laue, 2 J. Lauret, 2 A. Lebedev, 2 R. Lednick´ , 10 V.M. Leontiev, 27 M.J. LeVine, 2 C. Li, 32 y Q. Li, 41 S.J. Lindenbaum, 22 M.A. Lisa, 24 F. Liu, 42 L. Liu, 42 Z. Liu, 42 Q.J. Liu, 40 T. Ljubicic, 2 W.J. Llope, 30 H. Long, 6 R.S. Longacre, 2 M. Lopez-Noriega, 24 W.A. Love, 2 T. Ludlam, 2 D. Lynn, 2 J. Ma, 6 Y.G. Ma, 33 D. Magestro, 24 S. Mahajan, 16 L.K. Mangotra, 16 D.P. Mahapatra, 14 R. Majka, 43 R. Manweiler, 37 S. Margetis, 17 C. Markert, 43 L. Martin, 34 J. Marx, 18 H.S. Matis, 18 Yu.A. Matulenko, 27 T.S. McShane, 8 F. Meissner, 18 Yu. Melnick, 27 A. Meschanin, 27 M. Messer, 2 M.L. Miller, 43 Z. Milosevich, 7 N.G. Minaev, 27 C. Mironov, 17 D. Mishra, 14 J. Mitchell, 30 B. Mohanty, 38 L. Molnar, 28 C.F. Moore, 36 M.J. Mora-Corral, 19 V. Morozov, 18 M.M. de Moura, 41 M.G. Munhoz, 31 B.K. Nandi, 38 S.K. Nayak, 16 T.K. Nayak, 38 J.M. Nelson, 3 P. Nevski, 2 V.A. Nikitin, 11 L.V. Nogach, 27 B. Norman, 17 S.B. Nurushev, 27 G. Odyniec, 18 A. Ogawa, 2 V. Okorokov, 21 M. Oldenburg, 18 D. Olson, 18 G. Paic, 24 S.U. Pandey, 41 S.K. Pal, 38 Y. Panebratsev, 10 S.Y. Panitkin, 2 A.I. Pavlinov, 41 T. Pawlak, 39 V. Perevoztchikov, 2 W. Peryt, 39 V.A. Petrov, 11 S.C. Phatak, 14 R. Picha, 5 M. Planinic, 44 J. Pluta, 39 N. Porile, 28 J. Porter, 2 A.M. Poskanzer, 18 M. Potekhin, 2 E. Potrebenikova, 10 B.V.K.S. Potukuchi, 16 D. Prindle, 40 C. Pruneau, 41 J. Putschke, 19 G. Rai, 18 G. Rakness, 13 R. Raniwala, 29 S. Raniwala, 29 O. Ravel, 34 R.L. Ray, 36 S.V. Razin, 10, 13 D. Reichhold, 28 J.G. Reid, 40 G. Renault, 34 F. Retiere, 18 A. Ridiger, 21 H.G. Ritter, 18 J.B. Roberts, 30 O.V. Rogachevski, 10 J.L. Romero, 5 A. Rose, 41 C. Roy, 34 L.J. Ruan, 32, 2 R. Sahoo, 14 I. Sakrejda, 18 S. Salur, 43 J. Sandweiss, 43 I. Savin, 11 J. Schambach, 36 R.P. Scharenberg, 28 N. Schmitz, 19 L.S. Schroeder, 18 K. Schweda, 18 J. Seger, 8 D. Seliverstov, 21 P. Seyboth, 19 E. Shahaliev, 10 M. Shao, 32 M. Sharma, 25 K.E. Shestermanov, 27 S.S. Shimanskii, 10 R.N. Singaraju, 38 F. Simon, 19 G. Skoro, 10 N. Smirnov, 43 R. Snellings, 23 G. Sood, 25 P. Sorensen, 6 J. Sowinski, 13 H.M. Spinka, 1 B. Srivastava, 28 S. Stanislaus, 37 R. Stock, 12 A. Stolpovsky, 41 M. Strikhanov, 21 B. Stringfellow, 28 C. Struck, 12 A.A.P. Suaide, 41 E. Sugarbaker, 24 C. Suire, 2 M. Sumbera, 9 B. Surrow, 2 T.J.M. Symons, A. Szanto de Toledo, P. Szarwas, A. Tai, J. Takahashi, A.H. Tang, 2, 23 D. Thein, 6 J.H. Thomas, 18 V. Tikhomirov, 21 M. Tokarev, 10 M.B. Tonjes, 20 T.A. Trainor, 40 S. Trentalange, 6 R.E. Tribble, 35 M.D. Trivedi, 38 V. Trofimov, 21 O. Tsai, 6 T. Ullrich, 2 D.G. Underwood, 1 G. Van Buren, 2 A.M. VanderMolen, 20 A.N. Vasiliev, 27 M. Vasiliev, 35 S.E. Vigdor, 13 Y.P. Viyogi, 38 S.A. Voloshin, 41 W. Waggoner, 8 F. Wang, 28 G. Wang, 17 X.L. Wang, 32 Z.M. Wang, 32 H. Ward, 36 J.W. Watson, 17 R. Wells, 24 G.D. Westfall, 20 C. Whitten Jr., 6 H. Wieman, 18 R. Willson, 24 S.W. Wissink, 13 R. Witt, 43 J. Wood, 6 J. Wu, 32 N. Xu, 18 Z. Xu, 2 Z.Z. Xu, 32 A.E. Yakutin, 27 E. Yamamoto, 18 J. Yang, 6 P. Yepes, 30 V.I. Yurevich, 10 Y.V. Zanevski, 10 I. Zborovsk´ , 9 H. Zhang, 43, 2 H.Y. Zhang, 17 y W.M. Zhang, Z.P. Zhang, P.A. Zolnierczuk, R. Zoulkarneev, J. Zoulkarneeva, 11 and A.N. Zubarev 10 arXiv:nucl-ex/0307024 v1 30 Jul 2003
Journal Article•
TL;DR: In this paper, the transverse mass spectra and mid-rapidity yields for {Xi}s and {Omega}s plus their anti-particles are presented, and a hydrodynamically inspired model fit to the spectra, which assumes a thermalized source, seems to indicate that these multistrange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to {pi, K, p and {lambda}s.
Abstract: The transverse mass spectra and mid-rapidity yields for {Xi}s and {Omega}s plus their anti-particles are presented. The 10% most central collision yields suggest that the amount of multi-strange particles produced per produced charged hadron increases from SPS to RHIC energies. A hydrodynamically inspired model fit to the spectra, which assumes a thermalized source, seems to indicate that these multi-strange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to {pi}, K, p and {lambda}s.
02 May 2003
TL;DR: The balance function is a new observable based on the principle that charge is locally conserved when particles are pair produced as mentioned in this paper, and it is measured for charged particle pairs and identified charged pion pairs in Au+Au collisions at roots(NN)=130 GeV at the Relativistic Heavy Ion Collider using STAR.
Abstract: The balance function is a new observable based on the principle that charge is locally conserved when particles are pair produced. Balance functions have been measured for charged particle pairs and identified charged pion pairs in Au+Au collisions at roots(NN)=130 GeV at the Relativistic Heavy Ion Collider using STAR. Balance functions for peripheral collisions have widths consistent with model predictions based on a superposition of nucleon-nucleon scattering. Widths in central collisions are smaller, consistent with trends predicted by models incorporating late hadronization.