Kinematic distributions and nuclear effects of J/ψ production 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; Ar. 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.A.A. 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; S. Xella-Hansen; Yu. Zaitsev; M. Zavertyaev; T. Zeuner; A. Zhelezov; Z. Zheng; R. Zimmermann; T. Živko; A. Zoccoli

doi:10.1140/epjc/s10052-009-0965-7

Kinematic distributions and nuclear effects of J/ψ production 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, Ar. Belkov, Ar. Belkov, I. BelotelovA. 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.A.A. 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, S. Xella-Hansen, Yu. Zaitsev, M. Zavertyaev, T. Zeuner, A. Zhelezov, Z. Zheng, R. Zimmermann, T. Živko, A. Zoccoli

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Measurements of the kinematic distributions of J/ψ mesons produced in p-C, p-Ti and p-W collisions at sqrt{s}=41.6∼\mathrm{GeV}$ in the Feynman-x region -0.34<x F <0.14 and for transverse momentum up to p T =5.4 GeV/c are presented. The x F and p T dependencies of the nuclear suppression parameter, α, are also given. The results are based on 2.4×105 J/ψ mesons reconstructed in both the e + e - and μ + μ - decay channels. The data have been collected by the HERA-B experiment at the HERA proton ring of the DESY laboratory. The measurement explores the negative region of x F for the first time. The average value of α in the measured x F region is 0.981±0.015. The data suggest that the strong nuclear suppression of J/ψ production previously observed at high x F turns into an enhancement at negative x F . © 2009 Springer-Verlag / Società Italiana di Fisica.

Original language	English
Pages (from-to)	525-542
Journal	European Physical Journal C
Volume	60
Issue number	4
DOIs	https://doi.org/10.1140/epjc/s10052-009-0965-7
Publication status	Published - Apr 2009
Externally published	Yes

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10.1140/epjc/s10052-009-0965-7

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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. (2009). Kinematic distributions and nuclear effects of J/ψ production in 920 GeV fixed-target proton-nucleus collisions. European Physical Journal C, 60(4), 525-542. https://doi.org/10.1140/epjc/s10052-009-0965-7

@article{00ab2992fc464a5bbcfa9d0693215dea,

title = "Kinematic distributions and nuclear effects of J/ψ production in 920 GeV fixed-target proton-nucleus collisions",

abstract = "Measurements of the kinematic distributions of J/ψ mesons produced in p-C, p-Ti and p-W collisions at sqrt{s}=41.6∼\mathrm{GeV}$ in the Feynman-x region -0.34<x F <0.14 and for transverse momentum up to p T =5.4 GeV/c are presented. The x F and p T dependencies of the nuclear suppression parameter, α, are also given. The results are based on 2.4×105 J/ψ mesons reconstructed in both the e + e - and μ + μ - decay channels. The data have been collected by the HERA-B experiment at the HERA proton ring of the DESY laboratory. The measurement explores the negative region of x F for the first time. The average value of α in the measured x F region is 0.981±0.015. The data suggest that the strong nuclear suppression of J/ψ production previously observed at high x F turns into an enhancement at negative x F . {\textcopyright} 2009 Springer-Verlag / Societ{\`a} Italiana di Fisica.",

author = "I. Abt and M. Adams and M. Agari and H. Albrecht and A. Aleksandrov and V. Amaral and A. Amorim and S.J. Aplin 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 Th.S. Bauer and Ar. 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 K.M. Danielsen and M. Danilov and {De Castro}, S. and H. Deppe and X. Dong and H.B. Dreis 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 D.C. Goulart and S. Gradl and W. Gradl and F. Grimaldi and J. Groth-Jensen and Yu. Guilitsky and J.D. Hansen and J.M. Hern{\'a}ndez 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 K.T. Kn{\"o}pfle 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 {De Vera}, {M. T. N{\'u}{\~n}ez Pardo} and M. Ouchrif and F. Ould-Saada and C. Padilla and D. Peralta and R. Pernack and R. Pestotnik and B.A.A. Petersen and M. Piccinini and M.A. Pleier 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 A.J. Schwartz and A.S. Schwarz 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 H.S. Subramania 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 A.H. Walenta and M. Walter and J.J. Wang and D. Wegener and U. Werthenbach and H. Wolters and R. Wurth and A. Wurz and S. Xella-Hansen and Yu. Zaitsev and M. Zavertyaev and T. Zeuner and A. Zhelezov and Z. Zheng and R. Zimmermann and T. {\v Z}ivko and A. Zoccoli",

year = "2009",

month = apr,

doi = "10.1140/epjc/s10052-009-0965-7",

language = "English",

volume = "60",

pages = "525--542",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "4",

}

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, De Vera, MTNP, 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, Xella-Hansen, S, Zaitsev, Y, Zavertyaev, M, Zeuner, T, Zhelezov, A, Zheng, Z, Zimmermann, R, Živko, T & Zoccoli, A 2009, 'Kinematic distributions and nuclear effects of J/ψ production in 920 GeV fixed-target proton-nucleus collisions', European Physical Journal C, vol. 60, no. 4, pp. 525-542. https://doi.org/10.1140/epjc/s10052-009-0965-7

TY - JOUR

T1 - Kinematic distributions and nuclear effects of J/ψ production 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, 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 - De Vera, M. T. Núñez Pardo

AU - Ouchrif, M.

AU - Ould-Saada, F.

AU - Padilla, C.

AU - Peralta, D.

AU - Pernack, R.

AU - Pestotnik, R.

AU - Petersen, B.A.A.

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 - Xella-Hansen, S.

AU - Zaitsev, Yu.

AU - Zavertyaev, M.

AU - Zeuner, T.

AU - Zhelezov, A.

AU - Zheng, Z.

AU - Zimmermann, R.

AU - Živko, T.

AU - Zoccoli, A.

PY - 2009/4

Y1 - 2009/4

N2 - Measurements of the kinematic distributions of J/ψ mesons produced in p-C, p-Ti and p-W collisions at sqrt{s}=41.6∼\mathrm{GeV}$ in the Feynman-x region -0.34<x F <0.14 and for transverse momentum up to p T =5.4 GeV/c are presented. The x F and p T dependencies of the nuclear suppression parameter, α, are also given. The results are based on 2.4×105 J/ψ mesons reconstructed in both the e + e - and μ + μ - decay channels. The data have been collected by the HERA-B experiment at the HERA proton ring of the DESY laboratory. The measurement explores the negative region of x F for the first time. The average value of α in the measured x F region is 0.981±0.015. The data suggest that the strong nuclear suppression of J/ψ production previously observed at high x F turns into an enhancement at negative x F . © 2009 Springer-Verlag / Società Italiana di Fisica.

AB - Measurements of the kinematic distributions of J/ψ mesons produced in p-C, p-Ti and p-W collisions at sqrt{s}=41.6∼\mathrm{GeV}$ in the Feynman-x region -0.34<x F <0.14 and for transverse momentum up to p T =5.4 GeV/c are presented. The x F and p T dependencies of the nuclear suppression parameter, α, are also given. The results are based on 2.4×105 J/ψ mesons reconstructed in both the e + e - and μ + μ - decay channels. The data have been collected by the HERA-B experiment at the HERA proton ring of the DESY laboratory. The measurement explores the negative region of x F for the first time. The average value of α in the measured x F region is 0.981±0.015. The data suggest that the strong nuclear suppression of J/ψ production previously observed at high x F turns into an enhancement at negative x F . © 2009 Springer-Verlag / Società Italiana di Fisica.

UR - http://www.scopus.com/inward/record.url?scp=64849105422&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-009-0965-7

DO - 10.1140/epjc/s10052-009-0965-7

M3 - Article

SN - 1434-6044

VL - 60

SP - 525

EP - 542

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

ER -

Kinematic distributions and nuclear effects of J/ψ production in 920 GeV fixed-target proton-nucleus collisions

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