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Titolo:
Flavor asymmetry of the light quark sea from semi-inclusive deep-inelasticscattering
Autore:
Ackerstaff, K; Airapetian, A; Akopov, N; Akushevich, I; Amarian, M; Ashenauer, EC; Avakian, H; Avakian, R; Avetissian, A; Bains, B; Baumgarten, C; Beckmann, M; Belostotski, S; Belz, JE; Benisch, T; Bernreuther, S; Bianchi, N; Blouw, J; Bottcher, H; Borissov, A; Brack, J; Brauksiepe, S; Braun, B; Bray, B; Brons, S; Bruckner, W; Brull, A; Bruins, EEW; Bulten, KJ; Cadman, RV; 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; Fantoni, A; Fechtchenko, A; Ferstl, M; Fiedler, K; Filippone, BW; Fischer, H; Fox, B; Franz, J; Frullani, S; Funk, MA; Gagunashvili, ND; Gao, H; Garber, Y; Garibaldi, F; Gavrilov, G; Geiger, P; Gharibyan, V; Giordjian, V; Golendukhin, A; Graw, G; Grebeniouk, O; Green, PW; Greeniaus, LG; Grosshauser, C; Gute, A; Haeberli, W; Hansen, JO; Hasch, D; Hausser, O; Henderson, R; Henkes, T; 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; Lorenzon, W; Makins, NCR; Manaenkov, SI; Martens, FK; Martin, JW; Masoli, F; Mateos, A; McAndrew, M; McIlhany, K; McKeown, RD; Menden, FM; Meissner, F; Metz, A; Meyners, N; Mikloukho, O; Miller, CA; Miller, MA; Milner, R; Mitsyn, V; Most, A; Mozzetti, R; Muccifora, V; Nagaitsev, A; Naryshkin, Y; Nathan, AM; Neunreither, F; Niczyporuk, M; Nowak, WD; Nupieri, M; ONeill, TG; 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; Roloff, H; Rossi, P; Rudnitsky, S; Ruh, M; Ryckbosch, D; Sakemi, Y; Savin, I; Schmidt, F; Schmitt, H; Schnell, G; Schuler, KP; Schwind, A; 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; Tipton, B; Tytgat, M; Urciuoli, GM; van Hunen, JJ; de Vyver, RV; van den Brand, JFJ; van der Steenhoven, G; Vetterli, MC; Vincter, MG; Volk, E; Wander, W; Williamson, SE; Wise, T; Woller, K; Yoneyama, S; Zohrabian, H;
Indirizzi:
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, Dipartmento Fis, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100 partmento Fis, 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 Univ Marburg, Inst Phys, D-35037 Marburg, Germany Univ Marburg Marburg Germany D-35037 Inst Phys, D-35037 Marburg, Germany 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, St Petersburg 188350, Russia Petersburg Nucl Phys Inst St Petersburg Russia 188350 urg 188350, Russia 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, Tokyo 152, Japan Tokyo Inst Technol Tokyo Japan 152Tokyo Inst Technol, Tokyo 152, Japan Vrije Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands Vrije Univ Amsterdam Amsterdam Netherlands NL-1081 HV erdam, Netherlands Yerevan Phys Inst, Yerevan 375036, Armenia Yerevan Phys Inst Yerevan Armenia 375036 s Inst, Yerevan 375036, Armenia
Titolo Testata:
PHYSICAL REVIEW LETTERS
fascicolo: 25, volume: 81, anno: 1998,
pagine: 5519 - 5523
SICI:
0031-9007(199812)81:25<5519:FAOTLQ>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
DRELL-YAN PROCESS; PARTON DISTRIBUTIONS; BREAKING; NUCLEON; PROTON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Ackerstaff, K Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada Univ Alberta Edmonton AB Canada T6G 2J1 AB T6G 2J1, Canada
Citazione:
K. Ackerstaff et al., "Flavor asymmetry of the light quark sea from semi-inclusive deep-inelasticscattering", PHYS REV L, 81(25), 1998, pp. 5519-5523

Abstract

The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02 < x < 0.3 and 1 < Q(2) < 10 GeV2 for the first time from semi-inclusive deep-inelastic scattering. The quantity [(d) over bar(x) - (u) over bar(x)]/[u(x) - d(x)] is derived from a relationship between the yields of positive and negative pions from unpolarized hydrogen and deuterium targets. The flavor asymmetry (d) over bar - (u) over bar is found to be nonzero and x dependent, showing an excess of (d) over bar over (u)over bar quarks in the proton.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/05/20 alle ore 05:22:52