Transverse momentum broadening of hadrons produced in semi-inclusive deep-inelastic scattering on nuclei

A. Airapetian, N. Akopov, Z. Akopov, E. C. Aschenauer, W. Augustyniak, A. Avetissian, E. Avetisyan, B. Ball, S. Belostotski, N. Bianchi, H. P. Blok, H. Böttcher, C. Bonomo, A. Borissov, V. Bryzgalov, J. Burns, M. Capiluppi, G. P. Capitani, E. Cisbani, G. CiulloM. Contalbrigo, P. F. Dalpiaz, W. Deconinck, L. De Nardo, R. De Leo, J. Dreschler, E. De Sanctis, M. Diefenthaler, P. Di Nezza, M. Düren, M. Ehrenfried, G. Elbakian, F. Ellinghaus, R. Fabbri, L. Felawka, A. Fantoni, S. Frullani, D. Gabbert, V. Gapienko, F. Garibaldi, V. Gharibyan, F. Giordano, S. Gliske, C. Hadjidakis, M. Hartig, D. Hasch, G. Hill, A. Hillenbrand, M. Hoek, Y. Holler, I. Hristova, Y. Imazu, A. Ivanilov, H. E. Jackson, H. S. Jo, A. Jgoun, S. Joosten, R. Kaiser, G. Karyan, T. Keri, E. Kinney, A. Kisselev, V. Korotkov, V. Kozlov, P. Kravchenko, L. Lagamba, R. Lamb, L. Lapikás, I. Lehmann, P. Lenisa, L. A. Linden-Levy, A. López Ruiz, W. Lorenzon, X. G. Lu, X. R. Lu, B. Q. Ma, D. Mahon, N. C.R. Makins, S. I. Manaenkov, L. Manfré, Y. Mao, B. Marianski, A. Martinez de la Ossa, H. Marukyan, C. A. Miller, Y. Miyachi, A. Movsisyan, V. Muccifora, M. Murray, A. Mussgiller, E. Nappi, Y. Naryshkin, A. Nass, M. Negodaev, W. D. Nowak, L. L. Pappalardo, R. Perez-Benito, N. Pickert, M. Raithel, P. E. Reimer, A. R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, J. Rubin, D. Ryckbosch, Y. Salomatin, F. Sanftl, A. Schäfer, G. Schnell, K. P. Schüler, B. Seitz, T. A. Shibata, V. Shutov, M. Stancari, M. Statera, E. Steffens, J. J.M. Steijger, H. Stenzel, J. Stewart, F. Stinzing, S. Taroian, A. Trzcinski, M. Tytgat, A. Vandenbroucke, P. B. van der Nat, Y. Van Haarlem, C. Van Hulse, D. Veretennikov, V. Vikhrov, I. Vilardi, C. Vogel, S. Wang, S. Yaschenko, H. Ye, Z. Ye, W. Yu, D. Zeiler, B. Zihlmann, P. Zupranski

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Abstract

The first detailed measurement of the dependence on target nuclear mass of the average squared transverse momentum 〈 pt2 〉 of π+, π-, and K+ mesons from deep-inelastic lepton scattering is obtained as a function of several kinematic variables. The data were accumulated at the Hermes experiment at Desy, in which the Hera 27.6 GeV lepton beam was scattered off several nuclear gas targets. The average squared transverse momentum was clearly observed to increase with atomic mass number. The effect increases as a function of Q2 and x and remains constant as a function of both the virtual photon energy ν and the fractional hadron energy z, except that it vanishes as z approaches unity.

Original languageEnglish (US)
Pages (from-to)114-118
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume684
Issue number2-3
DOIs
StatePublished - Feb 8 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Airapetian, A., Akopov, N., Akopov, Z., Aschenauer, E. C., Augustyniak, W., Avetissian, A., Avetisyan, E., Ball, B., Belostotski, S., Bianchi, N., Blok, H. P., Böttcher, H., Bonomo, C., Borissov, A., Bryzgalov, V., Burns, J., Capiluppi, M., Capitani, G. P., Cisbani, E., ... Zupranski, P. (2010). Transverse momentum broadening of hadrons produced in semi-inclusive deep-inelastic scattering on nuclei. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 684(2-3), 114-118. https://doi.org/10.1016/j.physletb.2010.01.020