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Titolo:
Evidence for a single-spin azimuthal asymmetry in semi-inclusive pion electroproduction
Autore:
Airapetian, A; Akopov, N; Amarian, M; Aschenauer, EC; Avakian, H; Avakian, R; Avetissian, A; Avetissian, E; Bains, B; Baumgarten, C; Beckmann, M; Belostotski, S; Belz, JE; Benisch, T; Bernreuther, S; Bianchi, N; Blouw, J; Bottcher, H; Borissov, A; Bouwhuis, M; Brack, J; Brauksiepe, S; Braun, B; Bray, B; Brons, S; Bruckner, W; Brull, A; Bruins, EEW; Bulten, HJ; Capitani, GP; Carter, P; Chumney, P; Cisbani, E; Court, GR; Dalpiaz, PF; De Sanctis, E; De Schepper, D; Devitsin, E; Huberts, PKAD; Di Nezza, P; Duren, M; Dvoredsky, A; Elbakian, G; Ely, J; Fantoni, A; Fechtchenko, A; Ferstl, M; Fiedler, K; Filippone, BW; Fischer, H; Fox, B; Franz, J; Frullani, S; Funk, MA; Garber, Y; Gao, H; Garibaldi, F; Gavrilov, G; Geiger, P; Gharibyan, V; Golendukhin, A; Graw, G; Grebeniouk, O; Green, PW; Greeniaus, LG; Grosshauser, C; Guidal, M; Gute, A; Gyurjyan, V; Haas, JP; Haeberli, W; Hansen, JO; Hartig, M; Hasch, D; Hausser, O; Heinsius, FH; Henderson, R; Henoch, M; Hertenberger, R; Holler, Y; Holt, RJ; Hoprich, W; Ihssen, H; Iodice, M; Izotov, A; Jackson, HE; Jgoun, A; Kaiser, R; Kinney, E; Kisselev, A; Kitching, P; Kobayashi, H; Koch, N; Konigsmann, K; Kolstein, M; Kolster, H; Korotkov, V; Korsch, W; Kozlov, V; Kramer, LH; Krivokhijine, VG; Kurisuno, M; Kyle, G; Lachnit, W; Lenisa, P; Lorenzon, W; Makins, NCR; Martens, FK; Martin, JW; Masoli, F; Mateos, A; McAndrew, M; McIlhany, K; McKeown, RD; Meissner, F; Menden, F; Metz, A; Meyners, N; Mikloukho, O; Miller, CA; Miller, MA; Milner, R; Most, A; Muccifora, V; Mussa, R; Nagaitsev, A; Naryshkin, Y; Nathan, AM; Neunreither, F; Niczyporuk, M; Nowak, WD; Nupieri, M; Oganessyan, KA; ONeill, TG; Openshaw, R; Ouyang, J; Owen, BR; Papavassiliou, V; Pate, SF; Pitt, M; Potashov, S; Potterveld, DH; Rakness, G; Reali, A; Redwine, R; Reolon, AR; Ristinen, R; Rith, K; Rossi, P; Rudnitsky, S; Ruh, M; Ryckbosch, D; Sakemi, Y; Savin, I; Scarlett, C; Schafer, A; Schmidt, F; Schmitt, H; Schnell, G; Schuler, KP; Schwind, A; Seibert, J; Shibata, TA; Shibatani, K; Shin, T; Shutov, V; Simani, C; Simon, A; Sinram, K; Slavich, P; Spengos, M; Steffens, E; Stenger, J; Stewart, J; Stoesslein, U; Sutter, M; Tallini, H; Taroian, S; Terkulov, A; Teryaev, O; Thomas, E; Tipton, B; Tytgat, M; Urciuoli, GM; van den Brand, JFJ; van der Steenhoven, G; van de Vyver, R; van Hunen, JJ; Vetterli, MC; Vikhrov, V; Vincter, MG; Visser, J; Volk, E; Wander, W; Wendland, J; Williamson, SE; Wise, T; Woller, K; Yoneyama, S; Zohrabian, H;
Indirizzi:
Yerevan Phys Inst, Yerevan 375036, Armenia Yerevan Phys Inst Yerevan Armenia 375036 s Inst, Yerevan 375036, Armenia Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada Univ Alberta Edmonton AB Canada T6G 2J1 hys, Edmonton, AB T6G 2J1, Canada Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA Argonne Natl Lab Argonne IL USA 60439 ab, Div Phys, Argonne, IL 60439 USA CALTECH, WK Kellogg Radiat Lab, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125 Kellogg Radiat Lab, Pasadena, CA 91125 USA Univ Colorado, Nucl Phys Lab, Boulder, CO 80309 USA Univ Colorado BoulderCO USA 80309 , Nucl Phys Lab, Boulder, CO 80309 USA DESY, D-22603 Hamburg, Germany DESY Hamburg Germany D-22603DESY, D-22603 Hamburg, Germany DESY, D-15738 Zeuthen, Germany DESY Zeuthen Germany D-15738DESY, D-15738 Zeuthen, Germany Joint Inst Nucl Res, Dubna 141980, Russia Joint Inst Nucl Res Dubna Russia 141980 t Nucl Res, Dubna 141980, Russia Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany Univ ErlangenNurnberg Erlangen Germany D-91058 -91058 Erlangen, Germany Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100 artimento Fis, I-44100 Ferrara, Italy Univ Ferrara, Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100 , Sez Ferrara, I-44100 Ferrara, Italy Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy Ist Nazl FisNucl Frascati Italy I-00044 ascati, I-00044 Frascati, Italy Florida Int Univ, Dept Phys, Miami, FL 33199 USA Florida Int Univ Miami FL USA 33199 Univ, Dept Phys, Miami, FL 33199 USA Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany Univ Freiburg Freiburg Germany D-79104 k Phys, D-79104 Freiburg, Germany State Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium State Univ Ghent Ghent Belgium B-9000 Radiat Phys, B-9000 Ghent, Belgium Max Planck Inst Kernphys, D-69029 Heidelberg, Germany Max Planck Inst Kernphys Heidelberg Germany D-69029 Heidelberg, Germany Univ Illinois, Dept Phys, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801 linois, Dept Phys, Urbana, IL 61801 USA Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA Univ Kentucky Lexington KY USA 40506 ys & Astron, Lexington, KY 40506 USA Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England Univ Liverpool Liverpool Merseyside England L69 7ZE , Merseyside, England Univ Wisconsin, Dept Phys, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 sin, Dept Phys, Madison, WI 53706 USA MIT, Nucl Sci Lab, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139MIT, Nucl Sci Lab, Cambridge, MA 02139 USA Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 ll Lab Phys, Ann Arbor, MI 48109 USA PN Lebedev Phys Inst, Moscow 117924, Russia PN Lebedev Phys Inst Moscow Russia 117924 ys Inst, Moscow 117924, Russia Univ Munich, Sekt Phys, D-85748 Garching, Germany Univ Munich Garching Germany D-85748 ekt Phys, D-85748 Garching, Germany New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA New Mexico State Univ Las Cruces NM USA 88003 s, Las Cruces, NM 88003 USA NIKHEF H, NL-1009 DB Amsterdam, Netherlands NIKHEF H Amsterdam Netherlands NL-1009 DB 1009 DB Amsterdam, Netherlands Petersburg Nucl Phys Inst, Gatchina 188350, Russia Petersburg Nucl Phys Inst Gatchina Russia 188350 Gatchina 188350, Russia Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany Univ Regensburg Regensburg Germany D-93040 , D-93040 Regensburg, Germany Ist Nazl Fis Nucl, Sez Sanita, I-00161 Rome, Italy Ist Nazl Fis Nucl Rome Italy I-00161 cl, Sez Sanita, I-00161 Rome, Italy Ist Super Sanita, Phys Lab, I-00161 Rome, Italy Ist Super Sanita Rome Italy I-00161 anita, Phys Lab, I-00161 Rome, Italy Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada Simon Fraser Univ Burnaby BC Canada V5A 1S6 , Burnaby, BC V5A 1S6, Canada TRIUMF, Vancouver, BC V6T 2A3, Canada TRIUMF Vancouver BC Canada V6T 2A3TRIUMF, Vancouver, BC V6T 2A3, Canada Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan Tokyo Inst Technol Tokyo Japan 1528551 , Dept Phys, Tokyo 1528551, Japan Free Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, NetherlandsFree Univ Amsterdam Amsterdam Netherlands NL-1081 HV terdam, Netherlands
Titolo Testata:
PHYSICAL REVIEW LETTERS
fascicolo: 18, volume: 84, anno: 2000,
pagine: 4047 - 4051
SICI:
0031-9007(20000501)84:18<4047:EFASAA>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRAGMENTATION FUNCTIONS; ANALYZING POWER; DISTRIBUTIONS; LEPTOPRODUCTION; NUCLEONS; BEAM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Airapetian, A Yerevan Phys Inst, Yerevan 375036, Armenia Yerevan Phys Inst Yerevan Armenia 375036 n 375036, Armenia
Citazione:
A. Airapetian et al., "Evidence for a single-spin azimuthal asymmetry in semi-inclusive pion electroproduction", PHYS REV L, 84(18), 2000, pp. 4047-4051

Abstract

Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distribution in the azimuthal angle phi of the pion relative to the lepton scattering plane was formed for pi(+) electroproduction on a longitudinally polarized hydrogen target. The corresponding analyzing power in the sin phi moment of the cross section is 0.022 +/- 0.005 +/- 0.003. This result can be interpreted as the effect of terms in the cross section involving chiral-odd spin distribution functions in combination with a chiral-odd fragmentation function that is sensitive to the transverse polarization of the fragmenting quark.

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Documento generato il 07/04/20 alle ore 22:46:30