Double-hadron leptoproduction in the nuclear medium

Airapetian, A; Akopov, N; Akopov, Z; Amarian, M; Andrus, A; Aschenauer, Ec; Augustyniak, W; Avakian, R; Avetissian, A; Avetissian, E; Bailey, P; Belostotski, S; Bianchi, N; Blok, Hp; Bottcher, H; Borissov, A; Borysenko, A; Brull, A; Bryzgalov, V; Capiluppi, Marco; Capitani, Gp; Ciullo, Giuseppe; Contalbrigo, Marco; Ferretti, Paola; Deconinck, W; De Leo, R; Demey, M; De Nardo, L; De Sanctis, E; Devitsin, E; Diefenthaler, M; Di Nezza, P; Dreschler, J; Duren, M; Ehrenfried, M; Elalaoui Moulay, A; Elbakian, G; Ellinghaus, F; Elschenbroich, U; Fabbri, R; Fantoni, A; Felawka, L; Frullani, S; Funel, A; Gapienko, G; Gapienko, V; Garibaldi, F; Garrow, K; Gavrilov, G; Gharibyan, V; Giordano, F; Grebeniouk, O; Gregor, Im; Griffioen, K; Guler, H; Hadjidakis, C; Hartig, M; Hasch, D; Hasegawa, T; Hesselink, Wh; Hillenbrand, A; Hoek, M; Holler, Y; Hommez, B; Hristova, I; Iarygin, G; Ivanilov, A; Izotov, A; Jackson, He; Jgoun, A; Kaiser, R; Keri, T; Kinney, E; Kisselev, A; Kobayashi, T; Kopytin, M; Korotkov, V; Kozlov, V; Krauss, B; Kravchenko, P; Krivokhijine, Vg; Lagamba, L; Lapikas, L; Lenisa, Paolo; Liebing, P; Linden Levy La,; Lorenzon, W; Lu, J; Lu, S; Ma, Bq; Maiheu, B; Makins, Ncr; Mao, Y; Marianski, B; Marukyan, H; Masoli, Francesco Antonio; Mexner, V; Meyners, N; Michler, T; Mikloukho, O; Miller, Ca; Miyachi, Y; Muccifora, V; Murray, M; Nagaitsev, A; Nappi, E; Naryshkin, Y; Negodaev, M; Nowak, Wd; Ohsuga, H; Osborne, A; Perez Benito, R; Pickert, N; Raithel, M; Reggiani, D; Reimer, Pe; Reischl, A; Roelon, Ar; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubacek, L; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanjiev, I; Savin, I; Schafer, A; Schnell, G; Schuler, Kp; Seele, J; Seidl, R; Seitz, B; Shearer, C; Shibata, Ta; Shutov, V; Sinram, K; Stancari, Michelle Dawn; Statera, Marco; Steffens, E; Steijger, Jjm; Stenzel, H; Stewart, J; Stinzing, F; Streit, J; Tait, P; Tanaka, H; Taroian, S; Tchuiko, B; Terkulov, A; Trzcinski, A; Tytgat, M; Vandenbroucke, A; Van Der Nat Pb,; Van Der Steenhoven, G; Van Haarlem, Y; Veretennikov, D; Vikhrov, V; Vogel, C; Wang, S; Ye, Y; Ye, Z; Yen, S; Zihlmann, B; Zupranski, P.

doi:10.1103/PhysRevLett.96.162301

The first measurements of double-hadron production in deep-inelastic scattering within the nuclear medium were made with the HERMES spectrometer at DESY HERA using a 27.6 GeV positron beam. By comparing data for deuterium, nitrogen, krypton, and xenon nuclei, the influence of the nuclear medium on the ratio of double-hadron to single-hadron yields was investigated. Nuclear effects on the additional hadron are clearly observed, but with little or no difference among nitrogen, krypton, or xenon, and with smaller magnitude than effects seen on previously measured single-hadron multiplicities. The data are compared with models based on partonic energy loss or prehadronic scattering and with a model based on a purely absorptive treatment of the final-state interactions. Thus, the double-hadron ratio provides an additional tool for studying modifications of hadronization in nuclear matter.

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Titolo:	Double-hadron leptoproduction in the nuclear medium
Autori:	AIRAPETIAN A AKOPOV N AKOPOV Z AMARIAN M ANDRUS A ASCHENAUER EC AUGUSTYNIAK W AVAKIAN R AVETISSIAN A AVETISSIAN E BAILEY P BELOSTOTSKI S BIANCHI N BLOK HP BOTTCHER H BORISSOV A BORYSENKO A BRULL A BRYZGALOV V CAPILUPPI, Marco CAPITANI GP CIULLO, Giuseppe CONTALBRIGO, Marco FERRETTI, Paola DECONINCK W DE LEO R DEMEY M DE NARDO L DE SANCTIS E DEVITSIN E DIEFENTHALER M DI NEZZA P DRESCHLER J DUREN M EHRENFRIED M ELALAOUI MOULAY A ELBAKIAN G ELLINGHAUS F ELSCHENBROICH U FABBRI R FANTONI A FELAWKA L FRULLANI S FUNEL A GAPIENKO G GAPIENKO V GARIBALDI F GARROW K GAVRILOV G GHARIBYAN V GIORDANO F GREBENIOUK O GREGOR IM GRIFFIOEN K GULER H HADJIDAKIS C HARTIG M HASCH D HASEGAWA T HESSELINK WH HILLENBRAND A HOEK M HOLLER Y HOMMEZ B HRISTOVA I IARYGIN G IVANILOV A IZOTOV A JACKSON HE JGOUN A KAISER R KERI T KINNEY E KISSELEV A KOBAYASHI T KOPYTIN M KOROTKOV V KOZLOV V KRAUSS B KRAVCHENKO P KRIVOKHIJINE VG LAGAMBA L LAPIKAS L LENISA, Paolo LIEBING P LINDEN LEVY LA LORENZON W LU J LU S MA BQ MAIHEU B MAKINS NCR MAO Y MARIANSKI B MARUKYAN H MASOLI, Francesco Antonio MEXNER V MEYNERS N MICHLER T MIKLOUKHO O MILLER CA MIYACHI Y MUCCIFORA V MURRAY M NAGAITSEV A NAPPI E NARYSHKIN Y NEGODAEV M NOWAK WD OHSUGA H OSBORNE A PEREZ BENITO R PICKERT N RAITHEL M REGGIANI D REIMER PE REISCHL A ROELON AR RIEDL C RITH K ROSNER G ROSTOMYAN A RUBACEK L RUBIN J RYCKBOSCH D SALOMATIN Y SANJIEV I SAVIN I SCHAFER A SCHNELL G SCHULER KP SEELE J SEIDL R SEITZ B SHEARER C SHIBATA TA SHUTOV V SINRAM K STANCARI, Michelle Dawn STATERA, Marco STEFFENS E STEIJGER JJM STENZEL H STEWART J STINZING F STREIT J TAIT P TANAKA H TAROIAN S TCHUIKO B TERKULOV A TRZCINSKI A TYTGAT M VANDENBROUCKE A VAN DER NAT PB VAN DER STEENHOVEN G VAN HAARLEM Y VERETENNIKOV D VIKHROV V VOGEL C WANG S YE Y YE Z YEN S ZIHLMANN B ZUPRANSKI P. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2006
Rivista:	PHYSICAL REVIEW LETTERS
Abstract:	The first measurements of double-hadron production in deep-inelastic scattering within the nuclear medium were made with the HERMES spectrometer at DESY HERA using a 27.6 GeV positron beam. By comparing data for deuterium, nitrogen, krypton, and xenon nuclei, the influence of the nuclear medium on the ratio of double-hadron to single-hadron yields was investigated. Nuclear effects on the additional hadron are clearly observed, but with little or no difference among nitrogen, krypton, or xenon, and with smaller magnitude than effects seen on previously measured single-hadron multiplicities. The data are compared with models based on partonic energy loss or prehadronic scattering and with a model based on a purely absorptive treatment of the final-state interactions. Thus, the double-hadron ratio provides an additional tool for studying modifications of hadronization in nuclear matter.
Handle:	http://hdl.handle.net/11392/517186
Appare nelle tipologie:	03.1 Articolo su rivista

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