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Transverse-energy distributions at midrapidity in p plus p, d plus Au, and Au plus Au collisions at root s(NN)=62.4-200 GeV and implications for particle-production models

Adler, S. S.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Al-Jamel, A.; Alexander, J.; Aoki, K.; Aphecetche, L. and Armendariz, R., et al. (2014) In Physical Review C (Nuclear Physics) 89(4).
Abstract
Measurements of the midrapidity transverse-energy distribution, dE(T)/d eta, are presented for p + p, d+Au, and Au+Au collisions atv root s(NN) = 200 GeV and additionally for Au+Au collisions atv root s(NN) = 62.4 and 130 GeV. The dE(T)/d eta distributions are first compared with the number of nucleon participants N-part, number of binary collisions N-coll, and number of constituent-quark participants N-qp calculated from a Glauber model based on the nuclear geometry. For Au+Au, < dE(T)/d eta >/N-part increases with N-part, while < dE(T)/d eta >/N-qp is approximately constant for all three energies. This indicates that the two-component ansatz, dE(T)/d eta alpha (1 - x)N-part/2 + xN(coll), which was used to represent E-T... (More)
Measurements of the midrapidity transverse-energy distribution, dE(T)/d eta, are presented for p + p, d+Au, and Au+Au collisions atv root s(NN) = 200 GeV and additionally for Au+Au collisions atv root s(NN) = 62.4 and 130 GeV. The dE(T)/d eta distributions are first compared with the number of nucleon participants N-part, number of binary collisions N-coll, and number of constituent-quark participants N-qp calculated from a Glauber model based on the nuclear geometry. For Au+Au, < dE(T)/d eta >/N-part increases with N-part, while < dE(T)/d eta >/N-qp is approximately constant for all three energies. This indicates that the two-component ansatz, dE(T)/d eta alpha (1 - x)N-part/2 + xN(coll), which was used to represent E-T distributions, is simply a proxy for N-qp, and that the N-coll term does not represent a hard-scattering component in E-T distributions. The dE(T)/d eta distributions of Au+Au and d+Au are then calculated from the measured p + p E-T distribution using two models that both reproduce the Au+Au data. However, while the number-of-constituent-quark-participant model agrees well with the d+Au data, the additive-quark model does not. (Less)
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Physical Review C (Nuclear Physics)
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89
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4
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American Physical Society
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  • wos:000334300300005
  • scopus:84899766375
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0556-2813
DOI
10.1103/PhysRevC.89.044905
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English
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ff062ee3-291d-4c7a-b6c0-fdf242908448 (old id 4438925)
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2014-05-22 08:58:33
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@article{ff062ee3-291d-4c7a-b6c0-fdf242908448,
  abstract     = {Measurements of the midrapidity transverse-energy distribution, dE(T)/d eta, are presented for p + p, d+Au, and Au+Au collisions atv root s(NN) = 200 GeV and additionally for Au+Au collisions atv root s(NN) = 62.4 and 130 GeV. The dE(T)/d eta distributions are first compared with the number of nucleon participants N-part, number of binary collisions N-coll, and number of constituent-quark participants N-qp calculated from a Glauber model based on the nuclear geometry. For Au+Au, &lt; dE(T)/d eta &gt;/N-part increases with N-part, while &lt; dE(T)/d eta &gt;/N-qp is approximately constant for all three energies. This indicates that the two-component ansatz, dE(T)/d eta alpha (1 - x)N-part/2 + xN(coll), which was used to represent E-T distributions, is simply a proxy for N-qp, and that the N-coll term does not represent a hard-scattering component in E-T distributions. The dE(T)/d eta distributions of Au+Au and d+Au are then calculated from the measured p + p E-T distribution using two models that both reproduce the Au+Au data. However, while the number-of-constituent-quark-participant model agrees well with the d+Au data, the additive-quark model does not.},
  articleno    = {044905},
  author       = {Adler, S. S. and Afanasiev, S. and Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Al-Jamel, A. and Alexander, J. and Aoki, K. and Aphecetche, L. and Armendariz, R. and Aronson, S. H. and Averbeck, R. and Awes, T. C. and Azmoun, B. and Babintsev, V. and Baldisseri, A. and Barish, K. N. and Barnes, P. D. and Bassalleck, B. and Bathe, S. and Batsouli, S. and Baublis, V. and Bauer, F. and Bazilevsky, A. and Belikov, S. and Bennett, R. and Berdnikov, Y. and Bjorndal, M. T. and Boissevain, J. G. and Borel, H. and Boyle, K. and Brooks, M. L. and Brown, D. S. and Bruner, N. and Bucher, D. and Buesching, H. and Bumazhnov, V. and Bunce, G. and Burward-Hoy, J. M. and Butsyk, S. and Camard, X. and Campbell, S. and Chai, J. -S. and Chand, P. and Chang, W. C. and Chernichenko, S. and Chi, C. Y. and Chiba, J. and Chiu, M. and Choi, I. J. and Choudhury, R. K. and Chujo, T. and Cianciolo, V. and Cleven, C. R. and Cobigo, Y. and Cole, B. A. and Comets, M. P. and Constantin, P. and Csanad, M. and Csoergo, T. and Cussonneau, J. P. and Dahms, T. and Das, K. and David, G. and Deak, F. and Delagrange, H. and Denisov, A. and d'Enterria, D. and Deshpande, A. and Desmond, J. and Devismes, A. and Dietzsch, O. and Dion, A. and Drachenberg, J. L. and Drapier, O. and Drees, A. and Dubey, A. K. and Durum, A. and Dutta, D. and Dzhordzhadze, V. and Efremenko, Y. V. and Egdemir, J. and Enokizono, A. and En'yo, H. and Espagnon, B. and Esumi, S. and Fields, D. E. and Finck, C. and Fleuret, F. and Fokin, S. L. and Forestier, B. and Fox, B. D. and Fraenkel, Z. and Frantz, J. E. and Franz, A. and Frawley, A. D. and Fukao, Y. and Fung, S. -Y. and Gadrat, S. and Gastineau, F. and Germain, M. and Glenn, A. and Gonin, M. and Gosset, J. and Goto, Y. and de Cassagnac, R. Granier and Grau, N. and Greene, S. V. and Perdekamp, M. Grosse and Gunji, T. and Gustafsson, Hans-Åke and Hachiya, T. and Henni, A. Hadj and Haggerty, J. S. and Hagiwara, M. N. and Hamagaki, H. and Hansen, A. G. and Harada, H. and Hartouni, E. P. and Haruna, K. and Harvey, M. and Haslum, Eva and Hasuko, K. and Hayano, R. and He, X. and Heffner, M. and Hemmick, T. K. and Heuser, J. M. and Hidas, P. and Hiejima, H. and Hill, J. C. and Hobbs, R. and Holmes, M. and Holzmann, W. and Homma, K. and Hong, B. and Hoover, A. and Horaguchi, T. and Hur, M. G. and Ichihara, T. and Iinuma, H. and Ikonnikov, V. V. and Imai, K. and Inaba, M. and Inuzuka, M. and Isenhower, D. and Isenhower, L. and Ishihara, M. and Isobe, T. and Issah, M. and Isupov, A. and Jacak, B. V. and Jia, J. and Jin, J. and Jinnouchi, O. and Johnson, B. M. and Johnson, S. C. and Joo, K. S. and Jouan, D. and Kajihara, F. and Kametani, S. and Kamihara, N. and Kaneta, M. and Kang, J. H. and Katou, K. and Kawabata, T. and Kawagishi, T. and Kazantsev, A. V. and Kelly, S. and Khachaturov, B. and Khanzadeev, A. and Kikuchi, J. and Kim, D. J. and Kim, E. and Kim, E. J. and Kim, G. -B. and Kim, H. J. and Kim, Y. -S. and Kinney, E. and Kiss, A. and Kistenev, E. and Kiyomichi, A. and Klein-Boesing, C. and Kobayashi, H. and Kochenda, L. and Kochetkov, V. and Kohara, R. and Komkov, B. and Konno, M. and Kotchetkov, D. and Kozlov, A. and Kroon, P. J. and Kuberg, C. H. and Kunde, G. J. and Kurihara, N. and Kurita, K. and Kweon, M. J. and Kwon, Y. and Kyle, G. S. and Lacey, R. and Lajoie, J. G. and Lebedev, A. and Le Bornec, Y. and Leckey, S. and Lee, D. M. and Lee, M. K. and Leitch, M. J. and Leite, M. A. L. and Li, X. H. and Lim, H. and Litvinenko, A. and Liu, M. X. and Maguire, C. F. and Makdisi, Y. I. and Malakhov, A. and Malik, M. D. and Manko, V. I. and Mao, Y. and Martinez, G. and Masui, H. and Matathias, F. and Matsumoto, T. and McCain, M. C. and McGaughey, P. L. and Miake, Y. and Miller, T. E. and Milov, A. and Mioduszewski, S. and Mishra, G. C. and Mitchell, J. T. and Mohanty, A. K. and Morrison, D. P. and Moss, J. M. and Moukhanova, T. V. and Mukhopadhyay, D. and Muniruzzaman, M. and Murata, J. and Nagamiya, S. and Nagata, Y. and Nagle, J. L. and Naglis, M. and Nakamura, T. and Newby, J. and Nguyen, M. and Norman, B. E. and Nyanin, A. S. and Nystrand, Joakim and O'Brien, E. and Ogilvie, C. A. and Ohnishi, H. and Ojha, I. D. and Okada, K. and Omiwade, O. O. and Oskarsson, Anders and Otterlund, Ingvar and Oyama, K. and Ozawa, K. and Pal, D. and Palounek, A. P. T. and Pantuev, V. and Papavassiliou, V. and Park, J. and Park, W. J. and Pate, S. F. and Pei, H. and Penev, V. and Peng, J. -C. and Pereira, H. and Peresedov, V. and Peressounko, D. Yu. and Pierson, A. and Pinkenburg, C. and Pisani, R. P. and Purschke, M. L. and Purwar, A. K. and Qu, H. and Qualls, J. M. and Rak, J. and Ravinovich, I. and Read, K. F. and Reuter, M. and Reygers, K. and Riabov, V. and Riabov, Y. and Roche, G. and Romana, A. and Rosati, M. and Rosendahl, Sarah and Rosnet, P. and Rukoyatkin, P. and Rykov, V. L. and Ryu, S. S. and Sahlmueller, B. and Saito, N. and Sakaguchi, T. and Sakai, S. and Samsonov, V. and Sanfratello, L. and Santo, R. and Sarsour, M. and Sato, H. D. and Sato, S. and Sawada, S. and Schutz, Y. and Semenov, V. and Seto, R. and Sharma, D. and Shea, T. K. and Shein, I. and Shibata, T. -A. and Shigaki, K. and Shimomura, M. and Shohjoh, T. and Shoji, K. and Sickles, A. and Silva, C. L. and Silvermyr, D. and Sim, K. S. and Singh, C. P. and Singh, V. and Skutnik, S. and Smith, W. C. and Soldatov, A. and Soltz, R. A. and Sondheim, W. E. and Sorensen, S. P. and Sourikova, I. V. and Staley, F. and Stankus, P. W. and Stenlund, Evert and Stepanov, M. and Ster, A. and Stoll, S. P. and Sugitate, T. and Suire, C. and Sullivan, J. P. and Sziklai, J. and Tabaru, T. and Takagi, S. and Takagui, E. M. and Taketani, A. and Tanaka, K. H. and Tanaka, Y. and Tanida, K. and Tannenbaum, M. J. and Taranenko, A. and Tarjan, P. and Thomas, T. L. and Togawa, M. and Tojo, J. and Torii, H. and Towell, R. S. and Tram, V-N. and Tserruya, I. and Tsuchimoto, Y. and Tuli, S. K. and Tydesjö, Henrik and Tyurin, N. and Uam, T. J. and Vale, C. and Valle, H. and van Hecke, H. W. and Velkovska, J. and Velkovsky, M. and Vertesi, R. and Veszpremi, V. and Vinogradov, A. A. and Volkov, M. A. and Vznuzdaev, E. and Wagner, M. and Wang, X. R. and Watanabe, Y. and Wessels, J. and White, S. N. and Willis, N. and Winter, D. and Wohn, K. and Woody, C. L. and Wysocki, M. and Xie, W. and Yanovich, A. and Yokkaichi, S. and Young, G. R. and Younus, I. and Yushmanov, I. E. and Zajc, W. A. and Zaudtke, O. and Zhang, C. and Zhou, S. and Zimanyi, J. and Zolin, L. and Zong, X.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Transverse-energy distributions at midrapidity in p plus p, d plus Au, and Au plus Au collisions at root s(NN)=62.4-200 GeV and implications for particle-production models},
  url          = {http://dx.doi.org/10.1103/PhysRevC.89.044905},
  volume       = {89},
  year         = {2014},
}