| Improved measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions |
| Abt, I
; Adams, M
; Agari, M
; Albrecht, H
; Aleksandrov, A
; Amaral, V
; Amorim, A
; Aplin, SJ
; Aushev, V
; Bagaturia, Y
; Balagura, V
; Bargiotti, M
; Barsukova, O
; Bastos, J
; Batista, J
; Bauer, C
; Bauer, TS
; Belkov, A
; Belkov, A
; Belotelov, I
; Bertin, A
; Bobchenko, B
; Bocker, M
; Bogatyrev, A
; Bohm, G
; Brauer, M
; Bruinsma, M
; Bruschi, M
; Buchholz, P
; Buran, T
; Carvalho, J
; Conde, P
; Cruse, C
; Dam, M
; Danielsen, KM
; Danilov, M
; De Castro, S
; Deppe, H
; Dong, X
; Dreis, HB
; Egorytchev, V
; Ehret, K
; Eisele, F
; Emeliyanov, D
; Essenov, S
; Fabbri, L
; Faccioli, P
; Feuerstack-Raible, M
; Flammer, J
; Fominykh, B
; Funcke, M
; Garrido, L
; Gellrich, A
; Giacobbe, B
; Giovannini, P
; Glass, J
; Goloubkov, D
; Golubkov, Y
; Golutvin, A
; Golutvin, I
; Gorbounov, I
; Gorisek, A
; Gouchtchine, O
; Goulart, DC
; Gradl, S
; Gradl, W
; Grimaldi, F
; Guilitsky, Y
; Hansen, JD
; Hernandez, JM
; Hofmann, W
; Hohlmann, M
; Hott, T
; Hulsbergen, W
; Husemann, U
; Igonkina, O
; Ispiryan, M
; Jagla, T
; Jiang, C
; Kapitza, H
; Karabekyan, S
; Karpenko, N
; Keller, S
; Kessler, J
; Khasanov, F
; Kiryushin, Y
; Kisel, I
; Klinkby, E
; Knopfle, KT
; Kolanoski, H
; Korpar, S
; Krauss, C
; Kreuzer, P
; Krizan, P
; Krucker, D
; Kupper, S
; Kvaratskheliia, T
; Lanyov, A
; Lau, K
; Lewendel, B
; Lohse, T
; Lomonosov, B
; Manner, R
; Mankel, R
; Masciocchi, S
; Massa, I
; Matchikhilian, I
; Medin, G
; Medinnis, M
; Mevius, M
; Michetti, A
; Mikhailov, Y
; Mizuk, R
; Muresan, R
; zur Nedden, M
; Negodaev, M
; Norenberg, M
; Nowak, S
; de Vera, NPMT
; Ouchrif, M
; Ould-Saada, F
; Padilla, C
; Peralta, D
; Pernack, R
; Pestotnik, R
; Petersen, BA
; Piccinini, M
; Pleier, MA
; Poli, M
; Popov, V
; Pose, D
; Prystupa, S
; Pugatch, V
; Pylypchenko, Y
; Pyrlik, J
; Reeves, K
; Ressing, D
; Rick, H
; Riu, I
; Robmann, P
; Rostovtseva, I
; Rybnikov, V
; Sanchez, F
; Sbrizzi, A
; Schmelling, M
; Schmidt, B
; Schreiner, A
; Schroder, H
; Schwanke, U
; Schwartz, AJ
; Schwarz, AS
; Schwenninger, B
; Schwingenheuer, B
; Sciacca, F
; Semprini-Cesari, N
; Shuvalov, S
; Silva, L
; Sozuer, L
; Solunin, S
; Somov, A
; Somov, S
; Spengler, J
; Spighi, R
; Spiridonov, A
; Stanovnik, A
; Staric, M
; Stegmann, C
; Subramania, HS
; Symalla, M
; Tikhomirov, I
; Titov, M
; Tsakov, I
; Uwer, U
; van Eldik, C
; Vassiliev, Y
; Villa, M
; Vitale, A
; Vukotic, I
; Wahlberg, H
; Walenta, AH
; Walter, M
; Wang, JJ
; Wegener, D
; Werthenbach, U
; Wolters, H
; Wurth, R
; Wurz, A
; Zaitsev, Y
; Zavertyaev, M
; Zeuner, T
; Zhelezov, A
; Zheng, Z
; Zimmermann, R
; Zivko, T
; Zoccoli, A
|
| 2010-05-10
; 2010-05-10
|
| 关键词 | HERA-B EXPERIMENT
HEAVY FLAVOR PRODUCTION
QUARK FRAGMENTATION FUNCTIONS
FRONT-END ELECTRONICS
TO-LEADING ORDER
ELECTROMAGNETIC CALORIMETER
MUON DETECTOR
SYSTEM
ANNIHILATION
PERFORMANCE
Astronomy & Astrophysics
Physics, Particles & Fields
|
| 中文摘要 | A new measurement of the b (b) over bar production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B Collaboration. The b (b) over bar production is tagged via inclusive bottom quark decays into J/psi mesons by exploiting the longitudinal separation of J/psi -> l(+)l(-) decay vertices from the primary proton-nucleus interaction point. Both e(+)e(-) and mu(+)mu(-) channels are reconstructed for a total of 83 +/- 12 inclusive b -> J/psi X events found. The combined analysis yields a b (b) over bar to prompt J/psi cross section ratio of Delta sigma(b (b) over bar)/Delta sigma(J/psi)=0.032 +/- 0.005(stat)+/- 0.004(sys) measured in the x(F) acceptance (-0.35 < x(F)< 0.15), extrapolated to nb/sigma(b (b) over bar)=14.9 +/- 2.2(stat)+/- 2.4(sys) nucleon in the total phase space. |
| 语种 | 英语
; 英语
|
| 出版者 | AMERICAN PHYSICAL SOC
; COLLEGE PK
; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
|
| 内容类型 | 期刊论文
|
| 源URL | [http://hdl.handle.net/123456789/22335]  |
| 专题 | 清华大学
|
推荐引用方式
GB/T 7714 |
Abt, I,Adams, M,Agari, M,et al. Improved measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions[J],2010, 2010.
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| APA |
Abt, I.,Adams, M.,Agari, M.,Albrecht, H.,Aleksandrov, A.,...&Zoccoli, A.(2010).Improved measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions..
|
| MLA |
Abt, I,et al."Improved measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions".(2010).
|
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