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Dilepton mass spectra in p plus p collisions at root s=200 GeV

Adare, A.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Al-Bataineh, H.; Alexander, J.; Aoki, K.; Aphecetche, L. and Armendariz, R., et al. (2009) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 670(4-5). p.313-320
Abstract
PHENIX has measured the electron-positron pair mass spectrum from 0 to 8 GeV/c(2) in p + p collisions at root s = 200 GeV. The contributions from light meson decays to e(+)e(-) pairs have been determined based on measurements of hadron production cross sections by PHENIX. Within the systematic uncertainty of similar to 20% they account for all e(+)e(-) pairs in the mass region below similar to 1 GeV/c(2). The e(+)e(-) pair yield remaining after subtracting these contributions is dominated by semileptonic decays of charmed hadrons correlated through flavor conservation. Using the spectral shape predicted by PYTHIA, we estimate the charm production cross section to be 544 +/- 39(stat) +/- 142(syst) +/- 200(model) pb. which is consistent with... (More)
PHENIX has measured the electron-positron pair mass spectrum from 0 to 8 GeV/c(2) in p + p collisions at root s = 200 GeV. The contributions from light meson decays to e(+)e(-) pairs have been determined based on measurements of hadron production cross sections by PHENIX. Within the systematic uncertainty of similar to 20% they account for all e(+)e(-) pairs in the mass region below similar to 1 GeV/c(2). The e(+)e(-) pair yield remaining after subtracting these contributions is dominated by semileptonic decays of charmed hadrons correlated through flavor conservation. Using the spectral shape predicted by PYTHIA, we estimate the charm production cross section to be 544 +/- 39(stat) +/- 142(syst) +/- 200(model) pb. which is consistent with QCD calculations and measurements of single leptons by PHENIX. (C) 2008 Elsevier BV. All rights reserved. (Less)
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Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
670
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4-5
pages
313 - 320
publisher
Elsevier
external identifiers
  • wos:000262895800013
  • scopus:57649155652
ISSN
0370-2693
DOI
10.1016/j.physletb.2008.10.064
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English
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35db3f7f-6442-4618-b8a0-1beb5552965b (old id 1309435)
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2009-03-23 15:57:17
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@article{35db3f7f-6442-4618-b8a0-1beb5552965b,
  abstract     = {PHENIX has measured the electron-positron pair mass spectrum from 0 to 8 GeV/c(2) in p + p collisions at root s = 200 GeV. The contributions from light meson decays to e(+)e(-) pairs have been determined based on measurements of hadron production cross sections by PHENIX. Within the systematic uncertainty of similar to 20% they account for all e(+)e(-) pairs in the mass region below similar to 1 GeV/c(2). The e(+)e(-) pair yield remaining after subtracting these contributions is dominated by semileptonic decays of charmed hadrons correlated through flavor conservation. Using the spectral shape predicted by PYTHIA, we estimate the charm production cross section to be 544 +/- 39(stat) +/- 142(syst) +/- 200(model) pb. which is consistent with QCD calculations and measurements of single leptons by PHENIX. (C) 2008 Elsevier BV. All rights reserved.},
  author       = {Adare, A. and Afanasiev, S. and Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Al-Bataineh, H. and Alexander, J. and Aoki, K. and Aphecetche, L. and Armendariz, R. and Aronson, S. H. and Asai, J. and Atomssa, E. T. and Averbeck, R. and Awes, T. C. and Azmoun, B. and Babintsev, V. and Baksay, G. and Baksay, L. and Baldisseri, A. and Barish, K. N. and Barnes, R. and Bassalleck, B. and Bathe, S. and Batsouli, S. and Baublis, V. and Bazilevsky, A. and Belikov, S. and Bennett, R. and Berdnikov, Y. and Bickley, A. A. and Boissevain, J. G. and Borel, H. and Boyle, K. and Brooks, M. L. and Buesching, H. and Bumazhnov, V. and Bunce, G. and Butsyk, S. and Campbell, S. and Chang, B. S. and Charvet, J. -L. and Chernichenko, S. and Chiba, J. and Chi, C. Y. and Chiu, M. and Choi, I. J. and Chujo, T. and Chung, P. and Churyn, A. and Cianciolo, V. and Cleven, C. R. and Cole, B. A. and Comets, M. P. and Constantin, R. and Csanad, M. and Csoergoe, T. and Dahms, T. and Das, K. and David, G. and Deaton, M. B. and Dehmelt, K. and Deiagrange, H. and Denisov, A. and d'Enterria, D. and Deshpande, A. and Desmond, E. J. and Dietzschat, O. and Dion, A. and Donadelli, M. and Drapier, O. and Drees, A. and Dubey, A. K. and Durum, A. and Dzhordzhadze, V. and Efremenko, Y. V. and Egdemir, J. and Ellinghaus, F. and Emam, W. S. and Enokizono, A. and Enyo, H. and Esumi, S. and Eyser, K. O. and Fields, D. E. and Finger, M. and Finger, M., Jr. and Fleuret, F. and Fokin, S. L. and Fraenkel, Z. and Frantz, J. E. and Franz, A. and Frawley, A. D. and Fujiwara, K. and Fukao, Y. and Fusayasu, T. and Gadrat, S. and Garishvili, I. and Glenn, A. and Gong, H. 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 Haegemann, C. and Haggerty, J. S. and Hamagaki, H. and Han, R. and Harada, H. and Hartouni, E. P. and Haruna, K. and Haslum, Eva and Hayano, R. and Heffner, M. and Hemmick, Tk. and Hester, T. and He, X. and Hiejima, H. and Hill, J. C. and Hobbs, R. and Hohlmannn, M. and Holzmann, W. and Homma, K. and Hong, B. and Horaguchi, T. and Hornback, D. and Ichihara, T. and Imai, K. and Inaba, M. and Inoue, Y. 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 Joo, K. S. and Jouan, D. and Kajihara, F. and Kametani, S. and Kamihara, N. and Kamin, J. and Kaneta, M. and Kang, J. H. and Kanou, H. and Kawall, D. and Kazantsev, A. V. and Khanzadeev, A. and Kikuchi, J. and Kim, D. H. and Kim, D. 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V. and Mukhopadhyay, D. and Murata, J. and Nagamiya, S. and Nagata, Y. and Nagle, J. L. and Naglis, M. and Nakagawa, I. and Nakamiya, Y. and Nakamura, T. and Nakano, K. and Newby, J. and Nguyen, M. and Norman, B. E. and Nyanin, A. S. and O'Brien, E. and Oda, S. X. and Ogilvie, C. A. and Ohnishi, H. and Okada, H. and Okada, K. and Oka, M. and Omiwade, O. O. and Oskarsson, Anders and Ouchida, M. and Ozawa, K. and Pak, R. 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 Peng, J. C. and Pereira, H. and Peresedov, V. and Peressounko, D. Y. and Pinkenburg, C. and Purschke, M. L. and Purwar, A. K. and Qu, H. and Rak, J. and Rakotozafindrabe, A. and Ravinovich, I. and Read, K. F. and Rembeczki, S. 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 Sahimueller, B. and Saito, N. and Sakaguchi, T. and Sakai, S. and Sakata, H. and Samsonov, V. and Sato, S. and Sawada, S. and Seele, J. and Seidl, R. and Semenov, V. and Seto, R. and Sharma, D. and Shein, I. and Shevel, A. and Shibata, T-A. and Shigaki, K. and Shimomura, M. and Shoji, K. and Sickles, A. and Silva, C. L. and Silvermyr, D. and Silvestre, C. and Sim, K. S. and Singh, C. P. and Singh, V. and Skutnik, S. and Slunecka, M. and Soldatov, A. and Soltz, R. A. and Sondheim, W. E. and Sorensen, S. R. and Sourikova, I. V. and Staley, F. and Stankus, P. W. and Stenlund, Evert and Stepanov, M. and Ster, A. and Stoll, S. R. and Sugitate, T. and Suire, C. and Sziklai, J. and Tabaru, T. and Takagi, S. and Takagui, E. M. and Taketani, A. and Tanaka, Y. and Tanida, K. and Tannenbaum, M. J. and Taranenko, A. and Tarjan, R. and Thomas, T. L. and Togawa, M. and Toia, A. and Tojo, J. and Tomek, L. and Torii, H. and Towell, R. S. and Tram, V. -N. and Tserruya, I. and Tsuchimoto, Y. and Vale, C. and Valle, H. and Van Hecke, H. W. and Velkoska, J. and Vertesi, R. and Vinogradov, A. A. and Virius, M. and Vrba, V. and Vznuzdaev, E. and Wagner, M. and Walker, D. and Wang, X. R. and Watanabe, Y. and Wessels, J. and White, S. N. and Winter, D. and Woody, C. L. and Wysocki, M. and Xie, W. and Yamaguchi, Y. L. and Yanovich, A. and Yasin, Z. and Ying, J. 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.},
  issn         = {0370-2693},
  language     = {eng},
  number       = {4-5},
  pages        = {313--320},
  publisher    = {Elsevier},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {Dilepton mass spectra in p plus p collisions at root s=200 GeV},
  url          = {http://dx.doi.org/10.1016/j.physletb.2008.10.064},
  volume       = {670},
  year         = {2009},
}