Measurement of the ϒproduction cross section in 920 GeV fixed-target proton-nucleus collisions

I. Abt; M. Adams; M. Agari; H. Albrecht; A. Aleksandrov; V. Amaral; A. Amorim; S. J. Aplin; V. Aushev; Y. Bagaturia; V. Balagura; M. Bargiotti; O. Barsukova; J. Bastos; J. Batista; C. Bauer; Th S. Bauer; A. Belkov; Ar Belkov; I. Belotelov; A. Bertin; B. Bobchenko; M. Böcker; A. Bogatyrev; G. Bohm; M. Bräuer; M. Bruinsma; M. Bruschi; P. Buchholz; T. Buran; J. Carvalho; P. Conde; C. Cruse; M. Dam; K. M. Danielsen; M. Danilov; S. De Castro; H. Deppe; X. Dong; H. B. Dreis; V. Egorytchev; K. Ehret; F. Eisele; D. Emeliyanov; S. Essenov; L. Fabbri; P. Faccioli; M. Feuerstack-Raible; J. Flammer; B. Fominykh; M. Funcke; Ll Garrido; A. Gellrich; B. Giacobbe; J. Gläß; D. Goloubkov; Y. Golubkov; A. Golutvin; I. Golutvin; I. Gorbounov; A. Gorišek; O. Gouchtchine; D. C. Goulart; S. Gradl; W. Gradl; F. Grimaldi; J. Groth-Jensen; Yu Guilitsky; J. D. Hansen; J. M. Hernández; W. Hofmann; M. Hohlmann; T. Hott; W. Hulsbergen; U. Husemann; O. Igonkina; M. Ispiryan; T. Jagla; C. Jiang; H. Kapitza; S. Karabekyan; N. Karpenko; S. Keller; J. Kessler; F. Khasanov; Yu Kiryushin; I. Kisel; E. Klinkby; K. T. Knöpfle; H. Kolanoski; S. Korpar; C. Krauss; P. Kreuzer; P. Križan; D. Krücker; S. Kupper; T. Kvaratskheliia; A. Lanyov; K. Lau; B. Lewendel; T. Lohse; B. Lomonosov; R. Männer; R. Mankel; S. Masciocchi; I. Massa; I. Matchikhilian; G. Medin; M. Medinnis; M. Mevius; A. Michetti; Yu Mikhailov; R. Mizuk; R. Muresan; M. zur Nedden; M. Negodaev; M. Nörenberg; S. Nowak; M. T. Núñez Pardo de Vera; M. Ouchrif; F. Ould-Saada; C. Padilla; D. Peralta; R. Pernack; R. Pestotnik; B. AA Petersen; M. Piccinini; M. A. Pleier; M. Poli; V. Popov; D. Pose; S. Prystupa; V. Pugatch; Y. Pylypchenko; J. Pyrlik; K. Reeves; D. Reßing; H. Rick; I. Riu; P. Robmann; I. Rostovtseva; V. Rybnikov; F. Sánchez; A. Sbrizzi; M. Schmelling; B. Schmidt; A. Schreiner; H. Schröder; U. Schwanke; A. J. Schwartz; A. S. Schwarz; B. Schwenninger; B. Schwingenheuer; F. Sciacca; N. Semprini-Cesari; S. Shuvalov; L. Silva; L. Sözüer; S. Solunin; A. Somov; S. Somov; J. Spengler; R. Spighi; A. Spiridonov; A. Stanovnik; M. Starič; C. Stegmann; H. S. Subramania; M. Symalla; I. Tikhomirov; M. Titov; I. Tsakov; U. Uwer; C. van Eldik; Yu Vassiliev; M. Villa; A. Vitale; I. Vukotic; H. Wahlberg; A. H. Walenta; M. Walter; J. J. Wang; D. Wegener; U. Werthenbach; H. Wolters; R. Wurth; A. Wurz; Yu Zaitsev; M. Zavertyaev; G. Zech; T. Zeuner; A. Zhelezov; Z. Zheng; R. Zimmermann; T. Živko; A. Zoccoli

doi:10.1016/j.physletb.2006.04.042

Measurement of the ϒproduction cross section in 920 GeV fixed-target proton-nucleus collisions

I. Abt
, M. Adams
, M. Agari
, H. Albrecht
, A. Aleksandrov
, V. Amaral
, A. Amorim
, S. J. Aplin
, V. Aushev
, Y. Bagaturia
, V. Balagura
, M. Bargiotti
, O. Barsukova
, J. Bastos
, J. Batista
, C. Bauer
, Th S. Bauer
, A. Belkov
, Ar Belkov
, I. Belotelov

A. Bertin, B. Bobchenko, M. Böcker, A. Bogatyrev, G. Bohm, M. Bräuer, M. Bruinsma, M. Bruschi, P. Buchholz, T. Buran, J. Carvalho, P. Conde, C. Cruse, M. Dam, K. M. Danielsen, M. Danilov, S. De Castro, H. Deppe, X. Dong, H. B. Dreis, V. Egorytchev, K. Ehret, F. Eisele, D. Emeliyanov, S. Essenov, L. Fabbri, P. Faccioli, M. Feuerstack-Raible, J. Flammer, B. Fominykh, M. Funcke, Ll Garrido, A. Gellrich, B. Giacobbe, J. Gläß, D. Goloubkov, Y. Golubkov, A. Golutvin, I. Golutvin, I. Gorbounov, A. Gorišek, O. Gouchtchine, D. C. Goulart, S. Gradl, W. Gradl, F. Grimaldi, J. Groth-Jensen, Yu Guilitsky, J. D. Hansen, J. M. Hernández, W. Hofmann, M. Hohlmann, T. Hott, W. Hulsbergen, U. Husemann, O. Igonkina, M. Ispiryan, T. Jagla, C. Jiang, H. Kapitza, S. Karabekyan, N. Karpenko, S. Keller, J. Kessler, F. Khasanov, Yu Kiryushin, I. Kisel, E. Klinkby, K. T. Knöpfle, H. Kolanoski, S. Korpar, C. Krauss, P. Kreuzer, P. Križan, D. Krücker, S. Kupper, T. Kvaratskheliia, A. Lanyov, K. Lau, B. Lewendel, T. Lohse, B. Lomonosov, R. Männer, R. Mankel, S. Masciocchi, I. Massa, I. Matchikhilian, G. Medin, M. Medinnis, M. Mevius, A. Michetti, Yu Mikhailov, R. Mizuk, R. Muresan, M. zur Nedden, M. Negodaev, M. Nörenberg, S. Nowak, M. T. Núñez Pardo de Vera, M. Ouchrif, F. Ould-Saada, C. Padilla, D. Peralta, R. Pernack, R. Pestotnik, B. AA Petersen, M. Piccinini, M. A. Pleier, M. Poli, V. Popov, D. Pose, S. Prystupa, V. Pugatch, Y. Pylypchenko, J. Pyrlik, K. Reeves, D. Reßing, H. Rick, I. Riu, P. Robmann, I. Rostovtseva, V. Rybnikov, F. Sánchez, A. Sbrizzi, M. Schmelling, B. Schmidt, A. Schreiner, H. Schröder, U. Schwanke, A. J. Schwartz, A. S. Schwarz, B. Schwenninger, B. Schwingenheuer, F. Sciacca, N. Semprini-Cesari, S. Shuvalov, L. Silva, L. Sözüer, S. Solunin, A. Somov, S. Somov, J. Spengler, R. Spighi, A. Spiridonov, A. Stanovnik, M. Starič, C. Stegmann, H. S. Subramania, M. Symalla, I. Tikhomirov, M. Titov, I. Tsakov, U. Uwer, C. van Eldik, Yu Vassiliev, M. Villa, A. Vitale, I. Vukotic, H. Wahlberg, A. H. Walenta, M. Walter, J. J. Wang, D. Wegener, U. Werthenbach, H. Wolters, R. Wurth, A. Wurz, Yu Zaitsev, M. Zavertyaev, G. Zech, T. Zeuner, A. Zhelezov, Z. Zheng, R. Zimmermann, T. Živko, A. Zoccoli

Max-Planck-Institut für Physik
University of Dortmund
Max-Planck-Institut für Kernphysik
c/o DESY
LIP Coimbra
Institute of Nuclear Research, National Academy of Sciences in Ukraine
Institute for Theoretical and Experimental Physics
University of Bologna
Joint Institute for Nuclear Research, Dubna
Science Park 105
Universität Siegen
Universiteit Utrecht
University of Oslo
University of Barcelona
Niels Bohr Institutet
University of Heidelberg
Institute of High Energy Physics, Chinese Academy of Sciences
University of Mannheim
Department of Biochemistry and Molecular and Structural Biology
University of Cincinnati
University of Houston
Universität Rostock
Humboldt-Universität zu Berlin
University of Maribor
University of California, Los Angeles
University of Ljubljana
Physik-Institut der Universität Zürich
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
Tsinghua University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

The cross section ratio R_{J / ψ} = Br (Υ{hooked} → l⁺ l^-) ṡ d σ (Υ{hooked}) / d y |_{y = 0} / σ (J / ψ) has been measured with the HERA-B spectrometer in fixed-target proton-nucleus collisions at 920 GeV proton beam energy corresponding to a proton-nucleon c.m.s. energy of sqrt(s) = 41.6 GeV. The combined results for the decay channels Υ{hooked} → e⁺ e^- and Υ{hooked} → μ⁺ μ^- yield a ratio R_{J / ψ} = (9.0 ± 2.1) × 10^-6. The corresponding Υ{hooked} production cross section per nucleon at mid-rapidity (y = 0) has been determined to be Br (Υ{hooked} → l⁺ l^-) ṡ d σ (Υ{hooked}) / d y |_{y = 0} = 4.5 ± 1.1 pb / nucleon.

langue originale	Anglais
Pages (de - à)	13-21
Nombre de pages	9
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	638
Numéro de publication	1
Les DOIs	https://doi.org/10.1016/j.physletb.2006.04.042
état	Publié - 29 juin 2006
Modification externe	Oui

Accès au document

10.1016/j.physletb.2006.04.042

Contient cette citation

Abt, I., Adams, M., Agari, M., Albrecht, H., Aleksandrov, A., Amaral, V., Amorim, A., Aplin, S. J., Aushev, V., Bagaturia, Y., Balagura, V., Bargiotti, M., Barsukova, O., Bastos, J., Batista, J., Bauer, C., Bauer, T. S., Belkov, A., Belkov, A., ... Zoccoli, A. (2006). Measurement of the ϒproduction cross section in 920 GeV fixed-target proton-nucleus collisions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 638(1), 13-21. https://doi.org/10.1016/j.physletb.2006.04.042

@article{393c208725d74861aa09a25f6760baee,

title = "Measurement of the ϒproduction cross section in 920 GeV fixed-target proton-nucleus collisions",

abstract = "The cross section ratio RJ / ψ = Br (Υ\{hooked\} → l+ l-) ṡ d σ (Υ\{hooked\}) / d y |y = 0 / σ (J / ψ) has been measured with the HERA-B spectrometer in fixed-target proton-nucleus collisions at 920 GeV proton beam energy corresponding to a proton-nucleon c.m.s. energy of sqrt(s) = 41.6 GeV. The combined results for the decay channels Υ\{hooked\} → e+ e- and Υ\{hooked\} → μ+ μ- yield a ratio RJ / ψ = (9.0 ± 2.1) × 10-6. The corresponding Υ\{hooked\} production cross section per nucleon at mid-rapidity (y = 0) has been determined to be Br (Υ\{hooked\} → l+ l-) ṡ d σ (Υ\{hooked\}) / d y |y = 0 = 4.5 ± 1.1 pb / nucleon.",

keywords = "Cross section, Proton-nucleus collisions, sqrt(s) = 41.6 GeV, Υ\{hooked\} mesons",

author = "I. Abt and M. Adams and M. Agari and H. Albrecht and A. Aleksandrov and V. Amaral and A. Amorim and Aplin, \{S. J.\} and V. Aushev and Y. Bagaturia and V. Balagura and M. Bargiotti and O. Barsukova and J. Bastos and J. Batista and C. Bauer and Bauer, \{Th S.\} and A. Belkov and Ar Belkov and I. Belotelov and A. Bertin and B. Bobchenko and M. B{\"o}cker and A. Bogatyrev and G. Bohm and M. Br{\"a}uer and M. Bruinsma and M. Bruschi and P. Buchholz and T. Buran and J. Carvalho and P. Conde and C. Cruse and M. Dam and Danielsen, \{K. M.\} and M. Danilov and \{De Castro\}, S. and H. Deppe and X. Dong and Dreis, \{H. B.\} and V. Egorytchev and K. Ehret and F. Eisele and D. Emeliyanov and S. Essenov and L. Fabbri and P. Faccioli and M. Feuerstack-Raible and J. Flammer and B. Fominykh and M. Funcke and Ll Garrido and A. Gellrich and B. Giacobbe and J. Gl{\"a}{\ss} and D. Goloubkov and Y. Golubkov and A. Golutvin and I. Golutvin and I. Gorbounov and A. Gori{\v s}ek and O. Gouchtchine and Goulart, \{D. C.\} and S. Gradl and W. Gradl and F. Grimaldi and J. Groth-Jensen and Yu Guilitsky and Hansen, \{J. D.\} and Hern{\'a}ndez, \{J. M.\} and W. Hofmann and M. Hohlmann and T. Hott and W. Hulsbergen and U. Husemann and O. Igonkina and M. Ispiryan and T. Jagla and C. Jiang and H. Kapitza and S. Karabekyan and N. Karpenko and S. Keller and J. Kessler and F. Khasanov and Yu Kiryushin and I. Kisel and E. Klinkby and Kn{\"o}pfle, \{K. T.\} and H. Kolanoski and S. Korpar and C. Krauss and P. Kreuzer and P. Kri{\v z}an and D. Kr{\"u}cker and S. Kupper and T. Kvaratskheliia and A. Lanyov and K. Lau and B. Lewendel and T. Lohse and B. Lomonosov and R. M{\"a}nner and R. Mankel and S. Masciocchi and I. Massa and I. Matchikhilian and G. Medin and M. Medinnis and M. Mevius and A. Michetti and Yu Mikhailov and R. Mizuk and R. Muresan and \{zur Nedden\}, M. and M. Negodaev and M. N{\"o}renberg and S. Nowak and \{N{\'u}{\~n}ez Pardo de Vera\}, \{M. T.\} and M. Ouchrif and F. Ould-Saada and C. Padilla and D. Peralta and R. Pernack and R. Pestotnik and Petersen, \{B. AA\} and M. Piccinini and Pleier, \{M. A.\} and M. Poli and V. Popov and D. Pose and S. Prystupa and V. Pugatch and Y. Pylypchenko and J. Pyrlik and K. Reeves and D. Re{\ss}ing and H. Rick and I. Riu and P. Robmann and I. Rostovtseva and V. Rybnikov and F. S{\'a}nchez and A. Sbrizzi and M. Schmelling and B. Schmidt and A. Schreiner and H. Schr{\"o}der and U. Schwanke and Schwartz, \{A. J.\} and Schwarz, \{A. S.\} and B. Schwenninger and B. Schwingenheuer and F. Sciacca and N. Semprini-Cesari and S. Shuvalov and L. Silva and L. S{\"o}z{\"u}er and S. Solunin and A. Somov and S. Somov and J. Spengler and R. Spighi and A. Spiridonov and A. Stanovnik and M. Stari{\v c} and C. Stegmann and Subramania, \{H. S.\} and M. Symalla and I. Tikhomirov and M. Titov and I. Tsakov and U. Uwer and \{van Eldik\}, C. and Yu Vassiliev and M. Villa and A. Vitale and I. Vukotic and H. Wahlberg and Walenta, \{A. H.\} and M. Walter and Wang, \{J. J.\} and D. Wegener and U. Werthenbach and H. Wolters and R. Wurth and A. Wurz and Yu Zaitsev and M. Zavertyaev and G. Zech and T. Zeuner and A. Zhelezov and Z. Zheng and R. Zimmermann and T. {\v Z}ivko and A. Zoccoli",

year = "2006",

month = jun,

day = "29",

doi = "10.1016/j.physletb.2006.04.042",

language = "English",

volume = "638",

pages = "13--21",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

number = "1",

}

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, Böcker, M, Bogatyrev, A, Bohm, G, Bräuer, 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, Gläß, J, Goloubkov, D, Golubkov, Y, Golutvin, A, Golutvin, I, Gorbounov, I, Gorišek, A, Gouchtchine, O, Goulart, DC, Gradl, S, Gradl, W, Grimaldi, F, Groth-Jensen, J, Guilitsky, Y, Hansen, JD, Hernández, 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, Knöpfle, KT, Kolanoski, H, Korpar, S, Krauss, C, Kreuzer, P, Križan, P, Krücker, D, Kupper, S, Kvaratskheliia, T, Lanyov, A, Lau, K, Lewendel, B, Lohse, T, Lomonosov, B, Männer, 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, Nörenberg, M, Nowak, S, Núñez Pardo de Vera, MT, Ouchrif, M, Ould-Saada, F, Padilla, C, Peralta, D, Pernack, R, Pestotnik, R, Petersen, BAA, 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, Sánchez, F, Sbrizzi, A, Schmelling, M, Schmidt, B, Schreiner, A, Schröder, H, Schwanke, U, Schwartz, AJ, Schwarz, AS, Schwenninger, B, Schwingenheuer, B, Sciacca, F, Semprini-Cesari, N, Shuvalov, S, Silva, L, Sözüer, L, Solunin, S, Somov, A, Somov, S, Spengler, J, Spighi, R, Spiridonov, A, Stanovnik, A, Starič, 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, Zech, G, Zeuner, T, Zhelezov, A, Zheng, Z, Zimmermann, R, Živko, T & Zoccoli, A 2006, 'Measurement of the ϒproduction cross section in 920 GeV fixed-target proton-nucleus collisions', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, VOL. 638, Numéro 1, p. 13-21. https://doi.org/10.1016/j.physletb.2006.04.042

TY - JOUR

T1 - Measurement of the ϒproduction cross section in 920 GeV fixed-target proton-nucleus collisions

AU - Abt, I.

AU - Adams, M.

AU - Agari, M.

AU - Albrecht, H.

AU - Aleksandrov, A.

AU - Amaral, V.

AU - Amorim, A.

AU - Aplin, S. J.

AU - Aushev, V.

AU - Bagaturia, Y.

AU - Balagura, V.

AU - Bargiotti, M.

AU - Barsukova, O.

AU - Bastos, J.

AU - Batista, J.

AU - Bauer, C.

AU - Bauer, Th S.

AU - Belkov, A.

AU - Belkov, Ar

AU - Belotelov, I.

AU - Bertin, A.

AU - Bobchenko, B.

AU - Böcker, M.

AU - Bogatyrev, A.

AU - Bohm, G.

AU - Bräuer, M.

AU - Bruinsma, M.

AU - Bruschi, M.

AU - Buchholz, P.

AU - Buran, T.

AU - Carvalho, J.

AU - Conde, P.

AU - Cruse, C.

AU - Dam, M.

AU - Danielsen, K. M.

AU - Danilov, M.

AU - De Castro, S.

AU - Deppe, H.

AU - Dong, X.

AU - Dreis, H. B.

AU - Egorytchev, V.

AU - Ehret, K.

AU - Eisele, F.

AU - Emeliyanov, D.

AU - Essenov, S.

AU - Fabbri, L.

AU - Faccioli, P.

AU - Feuerstack-Raible, M.

AU - Flammer, J.

AU - Fominykh, B.

AU - Funcke, M.

AU - Garrido, Ll

AU - Gellrich, A.

AU - Giacobbe, B.

AU - Gläß, J.

AU - Goloubkov, D.

AU - Golubkov, Y.

AU - Golutvin, A.

AU - Golutvin, I.

AU - Gorbounov, I.

AU - Gorišek, A.

AU - Gouchtchine, O.

AU - Goulart, D. C.

AU - Gradl, S.

AU - Gradl, W.

AU - Grimaldi, F.

AU - Groth-Jensen, J.

AU - Guilitsky, Yu

AU - Hansen, J. D.

AU - Hernández, J. M.

AU - Hofmann, W.

AU - Hohlmann, M.

AU - Hott, T.

AU - Hulsbergen, W.

AU - Husemann, U.

AU - Igonkina, O.

AU - Ispiryan, M.

AU - Jagla, T.

AU - Jiang, C.

AU - Kapitza, H.

AU - Karabekyan, S.

AU - Karpenko, N.

AU - Keller, S.

AU - Kessler, J.

AU - Khasanov, F.

AU - Kiryushin, Yu

AU - Kisel, I.

AU - Klinkby, E.

AU - Knöpfle, K. T.

AU - Kolanoski, H.

AU - Korpar, S.

AU - Krauss, C.

AU - Kreuzer, P.

AU - Križan, P.

AU - Krücker, D.

AU - Kupper, S.

AU - Kvaratskheliia, T.

AU - Lanyov, A.

AU - Lau, K.

AU - Lewendel, B.

AU - Lohse, T.

AU - Lomonosov, B.

AU - Männer, R.

AU - Mankel, R.

AU - Masciocchi, S.

AU - Massa, I.

AU - Matchikhilian, I.

AU - Medin, G.

AU - Medinnis, M.

AU - Mevius, M.

AU - Michetti, A.

AU - Mikhailov, Yu

AU - Mizuk, R.

AU - Muresan, R.

AU - zur Nedden, M.

AU - Negodaev, M.

AU - Nörenberg, M.

AU - Nowak, S.

AU - Núñez Pardo de Vera, M. T.

AU - Ouchrif, M.

AU - Ould-Saada, F.

AU - Padilla, C.

AU - Peralta, D.

AU - Pernack, R.

AU - Pestotnik, R.

AU - Petersen, B. AA

AU - Piccinini, M.

AU - Pleier, M. A.

AU - Poli, M.

AU - Popov, V.

AU - Pose, D.

AU - Prystupa, S.

AU - Pugatch, V.

AU - Pylypchenko, Y.

AU - Pyrlik, J.

AU - Reeves, K.

AU - Reßing, D.

AU - Rick, H.

AU - Riu, I.

AU - Robmann, P.

AU - Rostovtseva, I.

AU - Rybnikov, V.

AU - Sánchez, F.

AU - Sbrizzi, A.

AU - Schmelling, M.

AU - Schmidt, B.

AU - Schreiner, A.

AU - Schröder, H.

AU - Schwanke, U.

AU - Schwartz, A. J.

AU - Schwarz, A. S.

AU - Schwenninger, B.

AU - Schwingenheuer, B.

AU - Sciacca, F.

AU - Semprini-Cesari, N.

AU - Shuvalov, S.

AU - Silva, L.

AU - Sözüer, L.

AU - Solunin, S.

AU - Somov, A.

AU - Somov, S.

AU - Spengler, J.

AU - Spighi, R.

AU - Spiridonov, A.

AU - Stanovnik, A.

AU - Starič, M.

AU - Stegmann, C.

AU - Subramania, H. S.

AU - Symalla, M.

AU - Tikhomirov, I.

AU - Titov, M.

AU - Tsakov, I.

AU - Uwer, U.

AU - van Eldik, C.

AU - Vassiliev, Yu

AU - Villa, M.

AU - Vitale, A.

AU - Vukotic, I.

AU - Wahlberg, H.

AU - Walenta, A. H.

AU - Walter, M.

AU - Wang, J. J.

AU - Wegener, D.

AU - Werthenbach, U.

AU - Wolters, H.

AU - Wurth, R.

AU - Wurz, A.

AU - Zaitsev, Yu

AU - Zavertyaev, M.

AU - Zech, G.

AU - Zeuner, T.

AU - Zhelezov, A.

AU - Zheng, Z.

AU - Zimmermann, R.

AU - Živko, T.

AU - Zoccoli, A.

PY - 2006/6/29

Y1 - 2006/6/29

N2 - The cross section ratio RJ / ψ = Br (Υ{hooked} → l+ l-) ṡ d σ (Υ{hooked}) / d y |y = 0 / σ (J / ψ) has been measured with the HERA-B spectrometer in fixed-target proton-nucleus collisions at 920 GeV proton beam energy corresponding to a proton-nucleon c.m.s. energy of sqrt(s) = 41.6 GeV. The combined results for the decay channels Υ{hooked} → e+ e- and Υ{hooked} → μ+ μ- yield a ratio RJ / ψ = (9.0 ± 2.1) × 10-6. The corresponding Υ{hooked} production cross section per nucleon at mid-rapidity (y = 0) has been determined to be Br (Υ{hooked} → l+ l-) ṡ d σ (Υ{hooked}) / d y |y = 0 = 4.5 ± 1.1 pb / nucleon.

AB - The cross section ratio RJ / ψ = Br (Υ{hooked} → l+ l-) ṡ d σ (Υ{hooked}) / d y |y = 0 / σ (J / ψ) has been measured with the HERA-B spectrometer in fixed-target proton-nucleus collisions at 920 GeV proton beam energy corresponding to a proton-nucleon c.m.s. energy of sqrt(s) = 41.6 GeV. The combined results for the decay channels Υ{hooked} → e+ e- and Υ{hooked} → μ+ μ- yield a ratio RJ / ψ = (9.0 ± 2.1) × 10-6. The corresponding Υ{hooked} production cross section per nucleon at mid-rapidity (y = 0) has been determined to be Br (Υ{hooked} → l+ l-) ṡ d σ (Υ{hooked}) / d y |y = 0 = 4.5 ± 1.1 pb / nucleon.

KW - Cross section

KW - Proton-nucleus collisions

KW - sqrt(s) = 41.6 GeV

KW - Υ{hooked} mesons

U2 - 10.1016/j.physletb.2006.04.042

DO - 10.1016/j.physletb.2006.04.042

M3 - Article

AN - SCOPUS:33744947038

SN - 0370-2693

VL - 638

SP - 13

EP - 21

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1

ER -

Measurement of the ϒproduction cross section in 920 GeV fixed-target proton-nucleus collisions

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