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Measurements of B →j /ψ at forward rapidity in p+p collisions at s =510 GeV

Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alexander, J J; Alfred, M.; Aoki, K.; Apadula, N; Asano, H. and Atomssa, E. T., et al. (2017) In Physical Review D - Particles, Fields, Gravitation and Cosmology 95(9).
Abstract

We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0<pT<5 GeV/c and rapidity 1.2<|y|<2.2. The measured fraction FB→J/ψ at PHENIX is compared to values measured by other experiments at higher center of mass energies and to fixed-order-next-to-leading-logarithm and color-evaporation-model... (More)

We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0<pT<5 GeV/c and rapidity 1.2<|y|<2.2. The measured fraction FB→J/ψ at PHENIX is compared to values measured by other experiments at higher center of mass energies and to fixed-order-next-to-leading-logarithm and color-evaporation-model predictions. The bb cross section per unit rapidity [dσ/dy(pp→bb)] extracted from the obtained FB→J/ψ and the PHENIX inclusive J/ψ cross section measured at 200 GeV scaled with color-evaporation-model calculations, at the mean B hadron rapidity y=±1.7 in 510 GeV p+p collisions, is 3.63-1.70+1.92 μb. It is consistent with the fixed-order-next-to-leading-logarithm calculations.

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Physical Review D - Particles, Fields, Gravitation and Cosmology
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95
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9
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American Physical Society
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  • scopus:85020126352
  • wos:000400668700002
ISSN
2470-0010
DOI
10.1103/PhysRevD.95.092002
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English
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@article{e7f6f96e-c7ca-4699-bdf3-8e4159135f63,
  abstract     = {<p>We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0&lt;pT&lt;5 GeV/c and rapidity 1.2&lt;|y|&lt;2.2. The measured fraction FB→J/ψ at PHENIX is compared to values measured by other experiments at higher center of mass energies and to fixed-order-next-to-leading-logarithm and color-evaporation-model predictions. The bb cross section per unit rapidity [dσ/dy(pp→bb)] extracted from the obtained FB→J/ψ and the PHENIX inclusive J/ψ cross section measured at 200 GeV scaled with color-evaporation-model calculations, at the mean B hadron rapidity y=±1.7 in 510 GeV p+p collisions, is 3.63-1.70+1.92 μb. It is consistent with the fixed-order-next-to-leading-logarithm calculations.</p>},
  articleno    = {092002},
  author       = {Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Akimoto, R. and Alexander, J J and Alfred, M. and Aoki, K. and Apadula, N and Asano, H. and Atomssa, E. T. and Attila, A. and Awes, T. C. and Ayuso, Carmen and Azmoun, B. and Babintsev, V. and Bai, M and Bai, X. and Bannier, B and Barish, K N and Bathe, S and Baublis, V. and Baumann, C. and Baumgart, S. and Bazilevsky, A and Beaumier, M. and Belmont, R and Berdnikov, A and Berdnikov, Y. and Black, D and Blau, D. S. and Boer, M. and Bok, J S and Boyle, K and Brooks, M L and Bryslawskyj, J. and Buesching, H and Bumazhnov, V. and Butler, Christopher C. and Butsyk, S. and Campbell, S. and Canoaroman, C. and Chen, C. H. and Chi, C Y and Chiu, M and Choi, I J and Choi, J B and Choi, S and Christiansen, P. and Chujo, T. and Cianciolo, V and Cole, B A and Connors, M. and Cronin, N. and Crossette, N. and Csanád, M and Csörgo, T. and Danley, T. W. and Datta, A. and Daugherity, M. S. and David, G. and DeBlasio, K. and Dehmelt, K. and Denisov, A. and Deshpande, A and Desmond, E. J. and Ding, L. and Do, J. H. and D'Orazio, L and Drapier, O. and Drees, A. and Drees, K. A. and Dumancic, M. and Durham, J. M. and Durum, A. and Elder, T. and Engelmore, T and Enokizono, A. and Esumi, S. and Eyser, K. O. and Fadem, B and Fan, W. -T. and Feege, N. and Fields, D E and Finger, M and Finger, M and Fleuret, F. and Fokin, S. L. and Frantz, J E and Franz, A. and Frawley, A D and Fukao, Y. and Fukuda, Yuki and Fusayasu, T. and Gainey, K. and Gal, C and Garg, P. and Garishvili, A. and Garishvili, I. and Ge, H. and Giordano, F and Glenn, A. and Gong, X. and Gonin, M. and Goto, Y. and Granier de Cassagnac, R and Grau, N. and Greene, S V and Grosse Perdekamp, M. and Gu, Y. and Gunji, T and Guragain, H. and Hachiya, T. and Haggerty, J. S. and Hahn, K I and Hamagaki, H and Han, S. Y. and Hanks, J. and Hasegawa, S and Haseler, T. O. S. and Hashimoto, K. and Hayano, R. and He, X. and Hemmick, T. K. and Hester, T and Hill, J C and Hill, K and Hollis, R. S. and Homma, K and Hong, B. and Hoshino, T. and Hotvedt, N. and Huang, J. and Huang, S. and Ichihara, T. and Ikeda, Y and Imai, K. and Imazu, Y. and Inaba, M. and Iordanova, A. and Isenhower, D. and Isinhue, A. and Ito, Y and Ivanishchev, D. and Jacak, B. V. and Jeon, S. J. and Jezghani, M. and Ji, Zhenyu and Jia, J. and Jiang, X. and Johnson, B. M. and Joo, K S and Jorjadze, V. and Jouan, D. and Jumper, D S and Kamin, J. and Kanda, S. and Kang, B. H. and Kang, J. H. and Kang, J. S. and Kapukchyan, D. and Kapustinsky, J and Karthas, S. and Kawall, D and Kazantsev, A. V. and Key, J. A. and Khachatryan, V. and Khandai, P. K. and Khanzadeev, A. and Kijima, K M and Kim, C. and Kim, D. J. and Kim, E. -J. and Kim, M. and Kim, M. H. and Kim, Y. J. and Kim, Y. K. and Kincses, D. and Kistenev, E. and Klatsky, J. and Kleinjan, D. and Kline, P and Koblesky, T. and Kofarago, M and Komkov, B and Koster, J and Kotchetkov, D and Kotov, D and Krizek, F. and Kudo, S. and Kurita, K and Kurosawa, M and Kwon, Y. and Lacey, R and Lai, Y S and Lajoie, J G and Lallow, E. O. and Lebedev, A. and Lee, D. M, and Lee, G. H. and Lee, J. and Lee, K B and Lee, K S and Lee, S. H. and Leitch, M J and Leitgab, M. and Leung, Y H and Lewis, B. and Lewis, N. A. and Li, X. and Li, X. and Lim, S. H. and Liu, L. D. and Liu, M. X. and Loggins, V. R. and Lokos, S. and Lynch, D. and Maguire, C F and Makdisi, Y. I. and Makek, M. and Manion, A and Manko, V. I. and Mannel, E. and McCumber, M and McGaughey, P L and McGlinchey, D. and McKinney, C. and Meles, A. and Mendoza, M. and Meredith, B and Miake, Y and Mibe, T. and Mignerey, A. C. and Mihalik, D. E.M. and Milov, A and Mishra, D. K. and Mitchell, J. T. and Mitsuka, G. and Miyasaka, S. and Mizuno, S. and Mohanty, A K and Mohapatra, S and Moon, T. and Morrison, D. P. and Morrow, S. I.M. and Moskowitz, M. and Moukhanova, T. V. and Murakami, T and Murata, J. and Mwai, A. and Nagae, T. and Nagai, K. and Nagamiya, S. and Nagashima, K. and Nagashima, T. and Nagle, J L and Nagy, M I and Nakagawa, I and Nakagomi, H. and Nakamiya, Y and Nakamura, K. R. and Nakamura, T. and Nakano, K and Nattrass, C and Netrakanti, P. K. and Nihashi, M. and Niida, T and Nouicer, R. and Novák, T. and Novitzky, N. and Novotny, R and Nyanin, A. S. and O'Brien, E. and Ogilvie, C A and Oide, H. and Okada, K and Orjuela Koop, J. D. and Osborn, J. D. and Oskarsson, A. and Ozawa, K. and Pak, R. and Pantuev, V. and Papavassiliou, V. and Park, H I and Park, J. S. and Park, S. and Park, S. K. and Pate, S F and Patel, L. and Patel, M. and Peng, J. C. and Peng, W. X and Perepelitsa, D. V. and Perera, G. D. N. and Peressounko, D. Yu. and Perezlara, C. E. and Perry, J. and Petti, R. and Phipps, M. and Pinkenburg, C. and Pisani, R. P. and Pun, A. and Purschke, M. L. and Qu, H and Radzevich, P. V. and Rak, J. and Ravinovich, I and Read, K F and Reynolds, D. and Riabov, V. and Riabov, Y and Richardson, E. and Richford, D. and Rinn, T. and Riveli, N. and Roach, D and Rolnick, S D and Rosati, M and Rowan, Z. and Runchey, J. and Ryu, M S and Sahlmueller, B and Saito, N. and Sakaguchi, T. and Sako, H. and Samsonov, V. and Sarsour, M. and Sato, K. and Sato, S and Sawada, S. and Schaefer, B. and Schmoll, B. K. and Sedgwick, K and Seele, J and Seidl, R and Sekiguchi, Y and Sen, A. and Seto, R and Sett, P. and Sexton, A. and Sharma, D. and Shaver, A. and Shein, I. and Shibata, T. A. and Shigaki, K. and Shimomura, M and Shoji, K and Shukla, P. and Sickles, A. and Silva, C L and Silvermyr, D. and Singh, B. K. and Singh, C P and Singh, V. and Skoby, M. J. and Skolnik, M. and Slunečka, M and Smith, K. L. and Solano, S. and Soltz, R A and Sondheim, W E and Sorensen, S. P. and Sourikova, I. V. and Stankus, P W and Steinberg, P and Stenlund, E. and Stepanov, M and Ster, A and Stoll, S. P. and Stone, M. R. and Sugitate, T and Sukhanov, A. and Sun, J. and Syed Khaja, A S and Takahara, A. and Taketani, A and Tanaka, Y. and Tanida, K. and Tannenbaum, M. J. and Tarafdar, S and Taranenko, A, and Tarnai, G. and Tennant, E. and Tieulent, R and Timilsina, A. and Todoroki, T and Tomášek, M and Torii, H. and Towell, C. L. and Towell, R S and Tserruya, I and Ueda, Y and Ujvari, B. and van Hecke, H W and Vargyas, M and Vazquez-Carson, S. and Vazquez-Zambrano, E and Veicht, A and Velkovska, J. and Vértesi, R and Virius, M and Vrba, V and Vznuzdaev, E. and Wang, X. R. and Wang, Z. and Watanabe, D. and Watanabe, K. and Watanabe, Y and Watanabe, Y. S. and Wei, F and Whitaker, S. and Wolin, S. and Wong, C. P. and Woody, C. L. and Wysocki, M and Xia, B. and Xu, C. and Xu, Q and Yamaguchi, Y. L. and Yanovich, A. and Yin, Peiji and Yokkaichi, S and Yoo, J. H. and Yoon, I. and You, Z and Younus, I and Yu, H. and Yushmanov, I. E. and Zajc, W A and Zelenski, A and Zharko, S. and Zhou, S, and Zou, L. and , },
  issn         = {2470-0010},
  language     = {eng},
  month        = {05},
  number       = {9},
  publisher    = {American Physical Society},
  series       = {Physical Review D - Particles, Fields, Gravitation and Cosmology},
  title        = {Measurements of B →j /ψ at forward rapidity in p+p collisions at s =510 GeV},
  url          = {http://dx.doi.org/10.1103/PhysRevD.95.092002},
  volume       = {95},
  year         = {2017},
}