Quark fragmentation to π±, π0, K ±, p and p̄ in the nuclear environment

A. Airapetian; N. Akopov; Z. Akopov; M. Amarian; V. V. Ammosov; A. Andrus; E. C. Aschenauer; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetissian; P. Bailey; V. Baturin; C. Baumgarten; M. Beckmann; S. Belostotski; S. Bernreuther; N. Bianchi; H. P. Blok; H. Böttcher; A. Borissov; A. Borysenko; M. Bouwhuis; J. Brack; A. Brüll; V. Bryzgalov; G. P. Capitani; H. C. Chiang; G. Ciullo; M. Contalbrigo; P. F. Dalpiaz; R. De Leo; L. De Nardo; E. De Sanctis; E. Devitsin; P. Di Nezza; M. Düren; M. Ehrenfried; A. Elalaoui-Moulay; G. Elbakian; F. Ellinghaus; U. Elschenbroich; J. Ely; R. Fabbri; A. Fantoni; A. Fechtchenko; L. Felawka; B. Fox; J. Franz; S. Frullani; G. Gapienko; V. Gapienko; F. Garibaldi; K. Garrow; E. Garutti; D. Gaskell; G. Gavrilov; V. Gharibyan; G. Graw; O. Grebeniouk; L. G. Greeniaus; I. M. Gregor; K. Hafidi; M. Hartig; D. Hasch; D. Heesbeen; M. Henoch; R. Hertenberger; W. H.A. Hesselink; A. Hillenbrand; M. Hoek; Y. Holler; B. Hommez; G. Iarygin; A. Ivanilov; A. Izotov; H. E. Jackson; A. Jgoun; R. Kaiser; E. Kinney; A. Kisselev; K. Königsmann; M. Kopytin; V. Korotkov; V. Kozlov; B. Krauss; V. G. Krivokhijine; L. Lagamba; L. Lapikás; A. Laziev; P. Lenisa; P. Liebing; T. Lindemann; K. Lipka; W. Lorenzon; J. Lu; B. Maiheu; N. C.R. Makins; B. Marianski; H. Marukyan; F. Masoli; V. Mexner; N. Meyners; O. Mikloukho; C. A. Miller; Y. Miyachi; V. Muccifora; A. Nagaitsev; E. Nappi; Y. Naryshkin; A. Nass; M. Negodaev; W. D. Nowak; K. Oganessyan; H. Ohsuga; N. Pickert; S. Potashov; D. H. Potterveld; M. Raithel; D. Reggiani; P. E. Reimer; A. Reischl; A. R. Reolon; C. Riedl; K. Rith; G. Rosner; A. Rostomyan; L. Rubacek; D. Ryckbosch; Y. Salomatin; I. Sanjiev; I. Savin; C. Scarlett; A. Schäfer; C. Schill; G. Schnell; K. P. Schüler; A. Schwind; J. Seele; R. Seidl; B. Seitz; R. Shanidze; C. Shearer; T. A. Shibata; V. Shutov; M. C. Simani; K. Sinram; M. Stancari; M. Statera; E. Steffens; J. J.M. Steijger; H. Stenzel; J. Stewart; U. Stösslein; P. Tait; H. Tanaka; S. Taroian; B. Tchuiko; A. Terkulov; A. Tkabladze; A. Trzcinski; M. Tytgat; A. Vandenbroucke; P. van der Nat; G. van der Steenhoven; M. C. Vetterli; V. Vikhrov; M. G. Vincter; C. Vogel; M. Vogt; J. Volmer; C. Weiskopf; J. Wendland; J. Wilbert; G. Ybeles Smit; S. Yen; B. Zihlmann; H. Zohrabian; P. Zupranski

doi:10.1016/j.physletb.2003.10.026

Quark fragmentation to π^±, π⁰, K ^±, p and p̄ in the nuclear environment

A. Airapetian, N. Akopov, Z. Akopov, M. Amarian, V. V. Ammosov, A. Andrus, E. C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, V. Baturin, C. Baumgarten, M. Beckmann, S. Belostotski, S. Bernreuther, N. Bianchi, H. P. Blok, H. BöttcherA. Borissov, A. Borysenko, M. Bouwhuis, J. Brack, A. Brüll, V. Bryzgalov, G. P. Capitani, H. C. Chiang, G. Ciullo, M. Contalbrigo, P. F. Dalpiaz, R. De Leo, L. De Nardo, E. De Sanctis, E. Devitsin, P. Di Nezza, M. Düren, M. Ehrenfried, A. Elalaoui-Moulay, G. Elbakian, F. Ellinghaus, U. Elschenbroich, J. Ely, R. Fabbri, A. Fantoni, A. Fechtchenko, L. Felawka, B. Fox, J. Franz, S. Frullani, G. Gapienko, V. Gapienko, F. Garibaldi, K. Garrow, E. Garutti, D. Gaskell, G. Gavrilov, V. Gharibyan, G. Graw, O. Grebeniouk, L. G. Greeniaus, I. M. Gregor, K. Hafidi, M. Hartig, D. Hasch, D. Heesbeen, M. Henoch, R. Hertenberger, W. H.A. Hesselink, A. Hillenbrand, M. Hoek, Y. Holler, B. Hommez, G. Iarygin, A. Ivanilov, A. Izotov, H. E. Jackson, A. Jgoun, R. Kaiser, E. Kinney, A. Kisselev, K. Königsmann, M. Kopytin, V. Korotkov, V. Kozlov, B. Krauss, V. G. Krivokhijine, L. Lagamba, L. Lapikás, A. Laziev, P. Lenisa, P. Liebing, T. Lindemann, K. Lipka, W. Lorenzon, J. Lu, B. Maiheu, N. C.R. Makins, B. Marianski, H. Marukyan, F. Masoli, V. Mexner, N. Meyners, O. Mikloukho, C. A. Miller, Y. Miyachi, V. Muccifora, A. Nagaitsev, E. Nappi, Y. Naryshkin, A. Nass, M. Negodaev, W. D. Nowak, K. Oganessyan, H. Ohsuga, N. Pickert, S. Potashov, D. H. Potterveld, M. Raithel, D. Reggiani, P. E. Reimer, A. Reischl, A. R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, L. Rubacek, D. Ryckbosch, Y. Salomatin, I. Sanjiev, I. Savin, C. Scarlett, A. Schäfer, C. Schill, G. Schnell, K. P. Schüler, A. Schwind, J. Seele, R. Seidl, B. Seitz, R. Shanidze, C. Shearer, T. A. Shibata, V. Shutov, M. C. Simani, K. Sinram, M. Stancari, M. Statera, E. Steffens, J. J.M. Steijger, H. Stenzel, J. Stewart, U. Stösslein, P. Tait, H. Tanaka, S. Taroian, B. Tchuiko, A. Terkulov, A. Tkabladze, A. Trzcinski, M. Tytgat, A. Vandenbroucke, P. van der Nat, G. van der Steenhoven, M. C. Vetterli, V. Vikhrov, M. G. Vincter, C. Vogel, M. Vogt, J. Volmer, C. Weiskopf, J. Wendland, J. Wilbert, G. Ybeles Smit, S. Yen, B. Zihlmann, H. Zohrabian, P. Zupranski

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi-inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium, nitrogen and krypton targets. The differential multiplicity for krypton relative to that of deuterium has been measured for the first time for various identified hadrons (π ⁺, π^-, π⁰, K⁺, K^-, p and p̄) as a function of the virtual photon energy v, the fraction z of this energy transferred to the hadron, and the hadron transverse momentum squared p_t². The multiplicity ratio is strongly reduced in the nuclear medium at low v and high z, with significant differences among the various hadrons. The distribution of the hadron transverse momentum is broadened towards high p_t² in the nuclear medium, in a manner resembling the Cronin effect previously observed in collisions of heavy ions and protons with nuclei.

Original language	English (US)
Pages (from-to)	37-46
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	577
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2003.10.026
State	Published - Dec 18 2003

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2003.10.026

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Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V. V., Andrus, A., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H. P., ... Zupranski, P. (2003). Quark fragmentation to π^±, π⁰, K ^±, p and p̄ in the nuclear environment. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 577(1-2), 37-46. https://doi.org/10.1016/j.physletb.2003.10.026

Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Ammosov, VV, Andrus, A, Aschenauer, EC, Augustyniak, W, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Baturin, V, Baumgarten, C, Beckmann, M, Belostotski, S, Bernreuther, S, Bianchi, N, Blok, HP, Böttcher, H, Borissov, A, Borysenko, A, Bouwhuis, M, Brack, J, Brüll, A, Bryzgalov, V, Capitani, GP, Chiang, HC, Ciullo, G, Contalbrigo, M, Dalpiaz, PF, De Leo, R, De Nardo, L, De Sanctis, E, Devitsin, E, Di Nezza, P, Düren, M, Ehrenfried, M, Elalaoui-Moulay, A, Elbakian, G, Ellinghaus, F, Elschenbroich, U, Ely, J, Fabbri, R, Fantoni, A, Fechtchenko, A, Felawka, L, Fox, B, Franz, J, Frullani, S, Gapienko, G, Gapienko, V, Garibaldi, F, Garrow, K, Garutti, E, Gaskell, D, Gavrilov, G, Gharibyan, V, Graw, G, Grebeniouk, O, Greeniaus, LG, Gregor, IM, Hafidi, K, Hartig, M, Hasch, D, Heesbeen, D, Henoch, M, Hertenberger, R, Hesselink, WHA, Hillenbrand, A, Hoek, M, Holler, Y, Hommez, B, Iarygin, G, Ivanilov, A, Izotov, A, Jackson, HE, Jgoun, A, Kaiser, R, Kinney, E, Kisselev, A, Königsmann, K, Kopytin, M, Korotkov, V, Kozlov, V, Krauss, B, Krivokhijine, VG, Lagamba, L, Lapikás, L, Laziev, A, Lenisa, P, Liebing, P, Lindemann, T, Lipka, K, Lorenzon, W, Lu, J, Maiheu, B, Makins, NCR, Marianski, B, Marukyan, H, Masoli, F, Mexner, V, Meyners, N, Mikloukho, O, Miller, CA, Miyachi, Y, Muccifora, V, Nagaitsev, A, Nappi, E, Naryshkin, Y, Nass, A, Negodaev, M, Nowak, WD, Oganessyan, K, Ohsuga, H, Pickert, N, Potashov, S, Potterveld, DH, Raithel, M, Reggiani, D, Reimer, PE, Reischl, A, Reolon, AR, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubacek, L, Ryckbosch, D, Salomatin, Y, Sanjiev, I, Savin, I, Scarlett, C, Schäfer, A, Schill, C, Schnell, G, Schüler, KP, Schwind, A, Seele, J, Seidl, R, Seitz, B, Shanidze, R, Shearer, C, Shibata, TA, Shutov, V, Simani, MC, Sinram, K, Stancari, M, Statera, M, Steffens, E, Steijger, JJM, Stenzel, H, Stewart, J, Stösslein, U, Tait, P, Tanaka, H, Taroian, S, Tchuiko, B, Terkulov, A, Tkabladze, A, Trzcinski, A, Tytgat, M, Vandenbroucke, A, van der Nat, P, van der Steenhoven, G, Vetterli, MC, Vikhrov, V, Vincter, MG, Vogel, C, Vogt, M, Volmer, J, Weiskopf, C, Wendland, J, Wilbert, J, Ybeles Smit, G, Yen, S, Zihlmann, B, Zohrabian, H & Zupranski, P 2003, 'Quark fragmentation to π^±, π⁰, K ^±, p and p̄ in the nuclear environment', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 577, no. 1-2, pp. 37-46. https://doi.org/10.1016/j.physletb.2003.10.026

@article{e962a18cd9324f98a8853d1df9335a13,

title = "Quark fragmentation to π±, π0, K ±, p and {\=p} in the nuclear environment",

abstract = "The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi-inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium, nitrogen and krypton targets. The differential multiplicity for krypton relative to that of deuterium has been measured for the first time for various identified hadrons (π +, π-, π0, K+, K-, p and {\=p}) as a function of the virtual photon energy v, the fraction z of this energy transferred to the hadron, and the hadron transverse momentum squared pt2. The multiplicity ratio is strongly reduced in the nuclear medium at low v and high z, with significant differences among the various hadrons. The distribution of the hadron transverse momentum is broadened towards high pt2 in the nuclear medium, in a manner resembling the Cronin effect previously observed in collisions of heavy ions and protons with nuclei.",

author = "A. Airapetian and N. Akopov and Z. Akopov and M. Amarian and Ammosov, {V. V.} and A. Andrus and Aschenauer, {E. C.} and W. Augustyniak and R. Avakian and A. Avetissian and E. Avetissian and P. Bailey and V. Baturin and C. Baumgarten and M. Beckmann and S. Belostotski and S. Bernreuther and N. Bianchi and Blok, {H. P.} and H. B{\"o}ttcher and A. Borissov and A. Borysenko and M. Bouwhuis and J. Brack and A. Br{\"u}ll and V. Bryzgalov and Capitani, {G. P.} and Chiang, {H. C.} and G. Ciullo and M. Contalbrigo and Dalpiaz, {P. F.} and {De Leo}, R. and {De Nardo}, L. and {De Sanctis}, E. and E. Devitsin and {Di Nezza}, P. and M. D{\"u}ren and M. Ehrenfried and A. Elalaoui-Moulay and G. Elbakian and F. Ellinghaus and U. Elschenbroich and J. Ely and R. Fabbri and A. Fantoni and A. Fechtchenko and L. Felawka and B. Fox and J. Franz and S. Frullani and G. Gapienko and V. Gapienko and F. Garibaldi and K. Garrow and E. Garutti and D. Gaskell and G. Gavrilov and V. Gharibyan and G. Graw and O. Grebeniouk and Greeniaus, {L. G.} and Gregor, {I. M.} and K. Hafidi and M. Hartig and D. Hasch and D. Heesbeen and M. Henoch and R. Hertenberger and Hesselink, {W. H.A.} and A. Hillenbrand and M. Hoek and Y. Holler and B. Hommez and G. Iarygin and A. Ivanilov and A. Izotov and Jackson, {H. E.} and A. Jgoun and R. Kaiser and E. Kinney and A. Kisselev and K. K{\"o}nigsmann and M. Kopytin and V. Korotkov and V. Kozlov and B. Krauss and Krivokhijine, {V. G.} and L. Lagamba and L. Lapik{\'a}s and A. Laziev and P. Lenisa and P. Liebing and T. Lindemann and K. Lipka and W. Lorenzon and J. Lu and B. Maiheu and Makins, {N. C.R.} and B. Marianski and H. Marukyan and F. Masoli and V. Mexner and N. Meyners and O. Mikloukho and Miller, {C. A.} and Y. Miyachi and V. Muccifora and A. Nagaitsev and E. Nappi and Y. Naryshkin and A. Nass and M. Negodaev and Nowak, {W. D.} and K. Oganessyan and H. Ohsuga and N. Pickert and S. Potashov and Potterveld, {D. H.} and M. Raithel and D. Reggiani and Reimer, {P. E.} and A. Reischl and Reolon, {A. R.} and C. Riedl and K. Rith and G. Rosner and A. Rostomyan and L. Rubacek and D. Ryckbosch and Y. Salomatin and I. Sanjiev and I. Savin and C. Scarlett and A. Sch{\"a}fer and C. Schill and G. Schnell and Sch{\"u}ler, {K. P.} and A. Schwind and J. Seele and R. Seidl and B. Seitz and R. Shanidze and C. Shearer and Shibata, {T. A.} and V. Shutov and Simani, {M. C.} and K. Sinram and M. Stancari and M. Statera and E. Steffens and Steijger, {J. J.M.} and H. Stenzel and J. Stewart and U. St{\"o}sslein and P. Tait and H. Tanaka and S. Taroian and B. Tchuiko and A. Terkulov and A. Tkabladze and A. Trzcinski and M. Tytgat and A. Vandenbroucke and {van der Nat}, P. and {van der Steenhoven}, G. and Vetterli, {M. C.} and V. Vikhrov and Vincter, {M. G.} and C. Vogel and M. Vogt and J. Volmer and C. Weiskopf and J. Wendland and J. Wilbert and {Ybeles Smit}, G. and S. Yen and B. Zihlmann and H. Zohrabian and P. Zupranski",

note = "Funding Information: We thank A. Accardi, F. Arleo, W. Cassing, T. Falter, B.Z. Kopeliovich, U. Mosel, J. Nemchik, H.J. Pirner and X.N. Wang for many interesting discussions on this subject. We gratefully acknowledge the DESY management for its support, the staffs at DESY, and the collaborating institutions for their significant effort. This work was supported by the FWO-Flanders, Belgium; the Natural Sciences and Engineering Research Council of Canada; the ESOP, INTAS and TMR network contributions from the European Union; the German Bundesministerium f{\"u}r Bildung und Forschung; the Italian Istituto Nazionale di Fisica Nucleare (INFN); Monbusho International Scientific Research Program, JSPS and Toray Science Foundation of Japan; the Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); the UK Particle Physics and Astronomy Research Council; and the US Department of Energy and National Science Foundation.",

year = "2003",

month = dec,

day = "18",

doi = "10.1016/j.physletb.2003.10.026",

language = "English (US)",

volume = "577",

pages = "37--46",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Quark fragmentation to π±, π0, K ±, p and p̄ in the nuclear environment

AU - Airapetian, A.

AU - Akopov, N.

AU - Akopov, Z.

AU - Amarian, M.

AU - Ammosov, V. V.

AU - Andrus, A.

AU - Aschenauer, E. C.

AU - Augustyniak, W.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetissian, E.

AU - Bailey, P.

AU - Baturin, V.

AU - Baumgarten, C.

AU - Beckmann, M.

AU - Belostotski, S.

AU - Bernreuther, S.

AU - Bianchi, N.

AU - Blok, H. P.

AU - Böttcher, H.

AU - Borissov, A.

AU - Borysenko, A.

AU - Bouwhuis, M.

AU - Brack, J.

AU - Brüll, A.

AU - Bryzgalov, V.

AU - Capitani, G. P.

AU - Chiang, H. C.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - Dalpiaz, P. F.

AU - De Leo, R.

AU - De Nardo, L.

AU - De Sanctis, E.

AU - Devitsin, E.

AU - Di Nezza, P.

AU - Düren, M.

AU - Ehrenfried, M.

AU - Elalaoui-Moulay, A.

AU - Elbakian, G.

AU - Ellinghaus, F.

AU - Elschenbroich, U.

AU - Ely, J.

AU - Fabbri, R.

AU - Fantoni, A.

AU - Fechtchenko, A.

AU - Felawka, L.

AU - Fox, B.

AU - Franz, J.

AU - Frullani, S.

AU - Gapienko, G.

AU - Gapienko, V.

AU - Garibaldi, F.

AU - Garrow, K.

AU - Garutti, E.

AU - Gaskell, D.

AU - Gavrilov, G.

AU - Gharibyan, V.

AU - Graw, G.

AU - Grebeniouk, O.

AU - Greeniaus, L. G.

AU - Gregor, I. M.

AU - Hafidi, K.

AU - Hartig, M.

AU - Hasch, D.

AU - Heesbeen, D.

AU - Henoch, M.

AU - Hertenberger, R.

AU - Hesselink, W. H.A.

AU - Hillenbrand, A.

AU - Hoek, M.

AU - Holler, Y.

AU - Hommez, B.

AU - Iarygin, G.

AU - Ivanilov, A.

AU - Izotov, A.

AU - Jackson, H. E.

AU - Jgoun, A.

AU - Kaiser, R.

AU - Kinney, E.

AU - Kisselev, A.

AU - Königsmann, K.

AU - Kopytin, M.

AU - Korotkov, V.

AU - Kozlov, V.

AU - Krauss, B.

AU - Krivokhijine, V. G.

AU - Lagamba, L.

AU - Lapikás, L.

AU - Laziev, A.

AU - Lenisa, P.

AU - Liebing, P.

AU - Lindemann, T.

AU - Lipka, K.

AU - Lorenzon, W.

AU - Lu, J.

AU - Maiheu, B.

AU - Makins, N. C.R.

AU - Marianski, B.

AU - Marukyan, H.

AU - Masoli, F.

AU - Mexner, V.

AU - Meyners, N.

AU - Mikloukho, O.

AU - Miller, C. A.

AU - Miyachi, Y.

AU - Muccifora, V.

AU - Nagaitsev, A.

AU - Nappi, E.

AU - Naryshkin, Y.

AU - Nass, A.

AU - Negodaev, M.

AU - Nowak, W. D.

AU - Oganessyan, K.

AU - Ohsuga, H.

AU - Pickert, N.

AU - Potashov, S.

AU - Potterveld, D. H.

AU - Raithel, M.

AU - Reggiani, D.

AU - Reimer, P. E.

AU - Reischl, A.

AU - Reolon, A. R.

AU - Riedl, C.

AU - Rith, K.

AU - Rosner, G.

AU - Rostomyan, A.

AU - Rubacek, L.

AU - Ryckbosch, D.

AU - Salomatin, Y.

AU - Sanjiev, I.

AU - Savin, I.

AU - Scarlett, C.

AU - Schäfer, A.

AU - Schill, C.

AU - Schnell, G.

AU - Schüler, K. P.

AU - Schwind, A.

AU - Seele, J.

AU - Seidl, R.

AU - Seitz, B.

AU - Shanidze, R.

AU - Shearer, C.

AU - Shibata, T. A.

AU - Shutov, V.

AU - Simani, M. C.

AU - Sinram, K.

AU - Stancari, M.

AU - Statera, M.

AU - Steffens, E.

AU - Steijger, J. J.M.

AU - Stenzel, H.

AU - Stewart, J.

AU - Stösslein, U.

AU - Tait, P.

AU - Tanaka, H.

AU - Taroian, S.

AU - Tchuiko, B.

AU - Terkulov, A.

AU - Tkabladze, A.

AU - Trzcinski, A.

AU - Tytgat, M.

AU - Vandenbroucke, A.

AU - van der Nat, P.

AU - van der Steenhoven, G.

AU - Vetterli, M. C.

AU - Vikhrov, V.

AU - Vincter, M. G.

AU - Vogel, C.

AU - Vogt, M.

AU - Volmer, J.

AU - Weiskopf, C.

AU - Wendland, J.

AU - Wilbert, J.

AU - Ybeles Smit, G.

AU - Yen, S.

AU - Zihlmann, B.

AU - Zohrabian, H.

AU - Zupranski, P.

N1 - Funding Information: We thank A. Accardi, F. Arleo, W. Cassing, T. Falter, B.Z. Kopeliovich, U. Mosel, J. Nemchik, H.J. Pirner and X.N. Wang for many interesting discussions on this subject. We gratefully acknowledge the DESY management for its support, the staffs at DESY, and the collaborating institutions for their significant effort. This work was supported by the FWO-Flanders, Belgium; the Natural Sciences and Engineering Research Council of Canada; the ESOP, INTAS and TMR network contributions from the European Union; the German Bundesministerium für Bildung und Forschung; the Italian Istituto Nazionale di Fisica Nucleare (INFN); Monbusho International Scientific Research Program, JSPS and Toray Science Foundation of Japan; the Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); the UK Particle Physics and Astronomy Research Council; and the US Department of Energy and National Science Foundation.

PY - 2003/12/18

Y1 - 2003/12/18

N2 - The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi-inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium, nitrogen and krypton targets. The differential multiplicity for krypton relative to that of deuterium has been measured for the first time for various identified hadrons (π +, π-, π0, K+, K-, p and p̄) as a function of the virtual photon energy v, the fraction z of this energy transferred to the hadron, and the hadron transverse momentum squared pt2. The multiplicity ratio is strongly reduced in the nuclear medium at low v and high z, with significant differences among the various hadrons. The distribution of the hadron transverse momentum is broadened towards high pt2 in the nuclear medium, in a manner resembling the Cronin effect previously observed in collisions of heavy ions and protons with nuclei.

AB - The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi-inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium, nitrogen and krypton targets. The differential multiplicity for krypton relative to that of deuterium has been measured for the first time for various identified hadrons (π +, π-, π0, K+, K-, p and p̄) as a function of the virtual photon energy v, the fraction z of this energy transferred to the hadron, and the hadron transverse momentum squared pt2. The multiplicity ratio is strongly reduced in the nuclear medium at low v and high z, with significant differences among the various hadrons. The distribution of the hadron transverse momentum is broadened towards high pt2 in the nuclear medium, in a manner resembling the Cronin effect previously observed in collisions of heavy ions and protons with nuclei.

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U2 - 10.1016/j.physletb.2003.10.026

DO - 10.1016/j.physletb.2003.10.026

M3 - Article

AN - SCOPUS:0344440760

SN - 0370-2693

VL - 577

SP - 37

EP - 46

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 - 1-2

ER -