Measurement of semi-inclusive pi(+) electroproduction off the proton
| dc.contributor.author | Skabelin, Alexander V. | |
| dc.date.accessioned | 2011-08-05T18:48:50Z | |
| dc.date.available | 2011-08-05T18:48:50Z | |
| dc.date.issued | 2009-08 | |
| dc.date.submitted | 2008-09 | |
| dc.identifier.issn | 1550-7998 | |
| dc.identifier.issn | 1550-2368 | |
| dc.identifier.uri | http://hdl.handle.net/1721.1/65096 | |
| dc.description.abstract | Semi-inclusive π+ [pi superscript +] electroproduction on protons has been measured with the CLAS detector at Jefferson Lab. The measurement was performed on a liquid-hydrogen target using a 5.75 GeV electron beam. The complete five-fold differential cross sections were measured over a wide kinematic range including the complete range of azimuthal angles between hadronic and leptonic planes, ϕ [phi], enabling us to separate the ϕ-dependent [phi-dependent] terms. Our measurements of the ϕ-independent [phi-independent] term of the cross section at low Bjorken x were found to be in fairly good agreement with pQCD calculations. Indeed, the conventional current fragmentation calculation can account for almost all of the observed cross section, even at small π+ [pi superscript +] momentum. The measured center-of-momentum spectra are in qualitative agreement with high-energy data, which suggests a surprising numerical similarity between the spectator diquark fragmentation in the present reaction and the antiquark fragmentation measured in e+e- [e superscript + e superscript -] collisions. We have observed that the two ϕ-dependent [phi-dependent] terms of the cross section are small. Within our precision the cos2ϕ [cos 2 phi] term is compatible with zero, except for the low-z region, and the measured cosϕ [cos phi]term is much smaller in magnitude than the sum of the Cahn and Berger effects. | en_US |
| dc.description.sponsorship | United States. Dept. of Energy | en_US |
| dc.description.sponsorship | United States. Dept. of Energy (Contract No. DE-AC05- 84ER40150) | en_US |
| dc.description.sponsorship | National Science Foundation (U.S.) | en_US |
| dc.language.iso | en_US | |
| dc.publisher | American Physical Society | en_US |
| dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevD.80.032004 | en_US |
| dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en_US |
| dc.source | APS | en_US |
| dc.title | Measurement of semi-inclusive pi(+) electroproduction off the proton | en_US |
| dc.type | Article | en_US |
| dc.identifier.citation | Osipenko, M. et al. “Measurement of Semi-inclusive Π+ Electroproduction Off the Proton.” Physical Review D 80.3 (2009) : n. pag. © 2009 The American Physical Society | en_US |
| dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | en_US |
| dc.contributor.department | Massachusetts Institute of Technology. Laboratory for Nuclear Science | en_US |
| dc.contributor.approver | Skabelin, Alexander V. | |
| dc.contributor.mitauthor | Skabelin, Alexander V. | |
| dc.relation.journal | Physical review D | en_US |
| dc.eprint.version | Final published version | en_US |
| dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
| eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
| dspace.orderedauthors | Osipenko, M.; Ripani, M.; Ricco, G.; Avakian, H.; De Vita, R.; Adams, G.; Amaryan, M.; Ambrozewicz, P.; Anghinolfi, M.; Asryan, G.; Bagdasaryan, H.; Baillie, N.; Ball, J.; Baltzell, N.; Barrow, S.; Battaglieri, M.; Bedlinskiy, I.; Bektasoglu, M.; Bellis, M.; Benmouna, N.; Berman, B.; Biselli, A.; Blaszczyk, L.; Bonner, B.; Bouchigny, S.; Boiarinov, S.; Bradford, R.; Branford, D.; Briscoe, W.; Brooks, W.; Bültmann, S.; Burkert, V.; Butuceanu, C.; Calarco, J.; Careccia, S.; Carman, D.; Cazes, A.; Ceccopieri, F.; Chen, S.; Cole, P.; Collins, P.; Coltharp, P.; Corvisiero, P.; Crabb, D.; Crede, V.; Cummings, J.; Dashyan, N.; De Masi, R.; De Sanctis, E.; Degtyarenko, P.; Denizli, H.; Dennis, L.; Deur, A.; Dharmawardane, K.; Dhuga, K.; Dickson, R.; Djalali, C.; Dodge, G.; Donnelly, J.; Doughty, D.; Drozdov, V.; Dugger, M.; Dytman, S.; Dzyubak, O.; Egiyan, H.; Egiyan, K.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fatemi, R.; Fedotov, G.; Feldman, G.; Feuerbach, R.; Funsten, H.; Garçon, M.; Gavalian, G.; Gilfoyle, G.; Giovanetti, K.; Girod, F.; Goetz, J.; Golovach, E.; Gonenc, A.; Gordon, C.; Gothe, R.; Griffioen, K.; Guidal, M.; Guillo, M.; Guler, N.; Guo, L.; Gyurjyan, V.; Hadjidakis, C.; Hafidi, K.; Hakobyan, H.; Hakobyan, R.; Hanretty, C.; Hardie, J.; Hassall, N.; Heddle, D.; Hersman, F.; Hicks, K.; Hleiqawi, I.; Holtrop, M.; Hyde-Wright, C.; Ilieva, Y.; Ilyichev, A.; Ireland, D.; Ishkhanov, B.; Isupov, E.; Ito, M.; Jenkins, D.; Jo, H.; Joo, K.; Juengst, H.; Kalantarians, N.; Kellie, J.; Khandaker, M.; Kim, W.; Klein, A.; Klein, F.; Klimenko, A.; Kossov, M.; Krahn, Z.; Kramer, L.; Kubarovsky, V.; Kuhn, J.; Kuhn, S.; Kuleshov, S.; Lachniet, J.; Laget, J.; Langheinrich, J.; Lawrence, D.; Li, Ji; Livingston, K.; Lu, H.; MacCormick, M.; Markov, N.; Mattione, P.; McAleer, S.; McCracken, M.; McKinnon, B.; McNabb, J.; Mecking, B.; Mehrabyan, S.; Melone, J.; Mestayer, M.; Meyer, C.; Mibe, T.; Mikhailov, K.; Minehart, R.; Mirazita, M.; Miskimen, R.; Mokeev, V.; Moriya, K.; Morrow, S.; Moteabbed, M.; Mueller, J.; Munevar, E.; Mutchler, G.; Nadel-Turonski, P.; Napolitano, J.; Nasseripour, R.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Niczyporuk, B.; Niroula, M.; Niyazov, R.; Nozar, M.; O’Rielly, G.; Ostrovidov, A.; Park, K.; Pasyuk, E.; Paterson, C.; Pereira, S.; Philips, S.; Pierce, J.; Pivnyuk, N.; Pocanic, D.; Pogorelko, O.; Polli, E.; Popa, I.; Pozdniakov, S.; Preedom, B.; Price, J.; Prok, Y.; Protopopescu, D.; Qin, L.; Raue, B.; Riccardi, G.; Ritchie, B.; Rosner, G.; Rossi, P.; Rubin, P.; Sabatié, F.; Salamanca, J.; Salgado, C.; Santoro, J.; Sapunenko, V.; Schumacher, R.; Serov, V.; Sharabian, Y.; Shvedunov, N.; Skabelin, A.; Smith, E.; Smith, L.; Sober, D.; Sokhan, D.; Stavinsky, A.; Stepanyan, S.; Stepanyan, S.; Stokes, B.; Stoler, P.; Strakovsky, I.; Strauch, S.; Taiuti, M.; Tedeschi, D.; Thoma, U.; Tkabladze, A.; Tkachenko, S.; Todor, L.; Trentadue, L.; Tur, C.; Ungaro, M.; Vineyard, M.; Vlassov, A.; Watts, D.; Weinstein, L.; Weygand, D.; Williams, M.; Wolin, E.; Wood, M.; Yegneswaran, A.; Zana, L.; Zhang, J.; Zhao, B.; Zhao, Z. | en |
| mit.license | PUBLISHER_POLICY | en_US |
| mit.metadata.status | Complete |
