B-meson production at forward and backward rapidity in \(p\)+\(p\) and Cu+Au collisions at \(\sqrt{s_{_{NN}}}\)=200 GeV

• Published in: arXiv.org
• Main Authors: Aidala, C, Asano, H, Awes, T C, Azmoun, B, Beaumier, M, Belmont, R, Brooks, M L, Bryslawskyj, J, Bumazhnov, V, Chiu, M, Choi, I J, Choi, J B, Cole, B A, Connors, M, Csörgő, T, Danley, T W, Dehmelt, K, Drapier, O, Drees, K A, Esumi, S, Eyser, K O, Feege, N, Finger, M, Fleuret, F, Fokin, S L, Frawley, A D, Gonin, M, Grau, N, M Grosse Perdekamp, Hamilton, H F, Hashimoto, K, Hayano, R, Huang, J, Imai, K, Imrek, J, Inaba, M, Isinhue, A, Ito, Y, Jeon, S J, Jia, J, Kanda, S, Kang, J H, Kang, J S, Key, J A, Khachatryan, V, Klatsky, J, Krizek, F, Kwon, Y, Lacey, R, Lee, S, Leitgab, M, Lewis, B, Maguire, C F, Malaev, M, Manion, A, Manko, V I, Mannel, E, Mizuno, S, Mohanty, A K, Moon, T, Murakami, T, Murata, J, Nagai, K, Nakagawa, I, Nakamura, T, Ogilvie, C A, Pate, S F, Perepelitsa, D V, PerezLara, C E, Petti, R, Reynolds, D, Riabov, Y, Rinn, T, Riveli, N, Sarsour, M, Sato, K, Sekiguchi, Y, Sen, A, Sexton, A, Shaver, A, Slunečka, M, Soltz, R A, Sun, J, Sziklai, J, Tannenbaum, M J, Tarafdar, S, Tennant, E, Tomášek, M, Tserruya, I, Veicht, A, Vrba, V, Wang, Z, Watanabe, K, Wei, F, Wolin, S, Xia, B, C Xu, Xue, L, Zajc, W A, Zelenski, A
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 12.11.2017
• Subjects: Collisions; Copper; Gold; Mesons; Particle production
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1702.01085

The fraction of \(J/\psi\) mesons which come from B-meson decay, \(\textrm{F}_{B{\rightarrow}J/\psi}\), is measured for J/\(\psi\) rapidity \mbox{\(1.2<|y|<2.2\)} and \(p_T>0\) in \(p\)+\(p\) and Cu+Au collisions at \(\sqrt{s_{_{NN}}}\)=200 GeV with the PHENIX detector. The extracted fraction is \(\textrm{F}_{B{\rightarrow}J/\psi}\) = 0.025 \(\pm\) 0.006(stat) \(\pm\) 0.010(syst) for \(p\)+\(p\) collisions. For Cu+Au collisions, \(\textrm{F}_{B{\rightarrow}J/\psi}\) is 0.094 \(\pm\) 0.028(stat) \(\pm\) 0.037(syst) in the Au-going direction (\(-2.2<y<-1.2\)) and 0.089 \(\pm\) 0.026(stat) \(\pm\) 0.040(syst) in the Cu-going direction (\(1.2<y<2.2\)). The nuclear modification factor, \(R_{\rm CuAu}\), of B mesons in Cu+Au collisions is consistent with binary scaling of measured yields in \(p\)+\(p\) at both forward and backward rapidity.