Moments of the Spin Structure Functions g1p and g1d for 0.05 < Q2 < 3.0 GeV2 [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 2009.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- page(s) 12-16 : digital, PDF file
- Additional Creators:
- Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- The spin structure functions $g_1$ for the proton and the deuteron have been measured over a wide kinematic range in $x$ and \Q2 using 1.6 and 5.7 GeV longitudinally polarized electrons incident upon polarized NH$_3$ and ND$_3$ targets at Jefferson Lab. Scattered electrons were detected in the CEBAF Large Acceptance Spectrometer, for $0.05 < Q^2 < 5 $\ GeV$^2$ and $W < 3$ GeV. The first moments of $g_1$ for the proton and deuteron are presented -- both have a negative slope at low \Q2, as predicted by the extended Gerasimov-Drell-Hearn sum rule. The first result for the generalized forward spin polarizability of the proton $\gamma_0^p$ is also reported, and shows evidence of scaling above $Q^2$ = 1.5 GeV$^2$. Although the first moments of $g_1$ are consistent with Chiral Perturbation Theory (\ChPT) calculations up to approximately $Q^2 = 0.06$ GeV$^2$, a significant discrepancy is observed between the $\gamma_0^p$ data and \ChPT\ for $\gamma_0^p$,even at the lowest \Q2.
- Report Numbers:
- E 1.99:jlab-phy-08-778
E 1.99: arxiv:0802.2232
E 1.99: doe/or/23177-0301
doe/or/23177-0301
arxiv:0802.2232
jlab-phy-08-778 - Subject(s):
- Other Subject(s):
- Note:
- Published through SciTech Connect.
02/01/2009.
"jlab-phy-08-778"
" arxiv:0802.2232"
" doe/or/23177-0301"
Physics Letters B 672 ISSN 0370-2693; PYLBAJ FT
Pierce, J.; Ball, J.P.; Funsten, Herbert; Cords, Dieter; Price, John; Degtiarenko, Pavel; Dugger, Michael; Gyurjyan, Vardan; Biselli, Angela; Bosted, Peter; Dale, Daniel; Forest, Tony; Griffioen, Keith; Kuhn, Joachim; Lachniet, Jeff; Niccolai, Silvia; Stepanyan, Samuel; Lukashin, K.; Salgado, Carlos; Hersman, F.; Niculescu, Gabriel; Lima, Ana; Kim, Kui; Rossi, Patrizia; Asryan, G.; Burkert, Volker; Johnstone, John; Sharabian, Youri; Garcon, Michel; Brooks, William; Dickson, Richard; Smith, Elton; Beard, Kevin; Egiyan, Hovanes; Egiyan, Kim; Giovanetti, Kevin; Stepanyan, Stepan; Mecking, Bernhard; Raue, Brian; Joo, Kyungseon; Ripani, Marco; Mestayer, Mac; Feuerbach, Robert; Hicks, Kenneth; Schumacher, Reinhard; Qin, Liming; Hafidi, Kawtar; Berman, Barry; Briscoe, William; Cole, Philip; Feldman, Gerald; Philips, Sasha; Sober, Daniel; Guidal, Michel; Ritchie, Barry; Marchand, Claude; Elouadrhiri, Latifa; Calarco, John; Deur, Alexandre; Strauch, Steffen; Suleiman, Riad; Todor, Luminita; Klein, Franz; Mueller, James; Meyer, Curtis; Kramer, Laird; Minehart, Ralph; Stoler, Paul; Adams, Gary; Kim, Wooyoung; Nozar, Mina; Bultmann, S.; Dodge, Gail; Crabb, Donald; Kuhn, Sebastian; Pocanic, Dinko; Sabatie, Franck; Prok, Yelena; Miskimen, Rory; Amaryan, Moscov; Morand, Ludyvine; Carman, Daniel; Pasyuk, Evgueni; Tedeschi, David; O'Rielly, Grant; Kubarovsky, Valery; Dharmawardane, Kahanawita; Fatemi, Renee; Nasseripour, Rakhsha; Niyazov, Rustam; Khandaker, Mahbubul; Niculescu, Maria-Ioana; Holtrop, Maurik; Osipenko, Mikhail; Mikhaylov, Konstantin; Stavinskiy, Aleksey; Skabelin, Alexander; McNabb, John; McAleer, Simeon; Hadjidakis, Cynthia; Bektasoglu, Mehmet; Protopopescu, Dan; Taiuti, Mauro; Smith, Lee; Butuceanu, Cornel; Rosner, Guenther; Ilieva, Yordanka; Dashyan, Natalya; Battaglieri, Marco; Juengst, Henry; Gothe, Ralf; Shaw, Jeffrey; Laget, Jean; Mokeev, Viktor; Anghinolfi, Marco; Fedotov, Gleb; Ishkhanov, Boris; Ricco, Giovanni; Sapunenko, Vladimir; Shvedunov, Nikolay; Ball, Jacques; Rowntree, David; Goetz, John; Guo, Lei; Audit, Gerard; Baghdasaryan, Hovhannes; Barrow, Steve; Bellis, Matthew; Cummings, John; Eugenio, Paul; Ostrovidov, Alexander; Mutchler, Gordon; Bueltmann, Stephen; Klusman, Mike; Klein, Andreas; Hleiqawi, Ishaq; Ito, Mark; Avagyan, Harutyun; Bradford, Robert; Gilfoyle, Gerard; Kossov, Mikhail; Dytman, Steven; Mirazita, Marco; Baltzell, Nathan; McKinnon, Bryan; Mibe, Tsutomu; Baillie, Nathan; Bedlinskiy, Ivan; Benmouna, Nawal; Boyarinov, Sergey; Bouchigny, Sylvain; Branford, Derek; Chen, Shifeng; Collins, Patrick; Coltharp, Philip; Djalali, Chaden; Doughty, David; Gavalian, Gagik; Girod, Francois-Xavier; Guler, Nevzat; Hakobyan, Hayk; Hardie, John; Ireland, David; Jenkins, David; Jo, Hyon-Suk; Kellie, James; Kuleshov, Sergey; Langheinrich, Jorn; Livingston, Kenneth; MacCormick, Marion; Markov, Nikolai; Morrow, Steven; Moteabbed, Maryam; Nadel-Turonski, Pawel; Niczyporuk, Bogdan; Niroula, Megh; Paterson, Craig; Pivnyuk, Nikolay; Pogorelko, Oleg; Pozdnyakov, Sergey; Preedom, Barry; Riccardi, Gregory; Santoro, Joseph; Serov, Vladimir; Stokes, Burnham; Strakovski, Igor; Tkabladze, Avtandil; Tkachenko, Svyatoslav; Ungaro, Maurizio; Keith, Christopher; Seely, Mikell; Careccia, Sharon; Crede, Volker; Park, Kijun; Kalantarians, Narbe; Elfassi, Lamiaa; Lawrence, Dave; Lu, Haiyun; Gevorgyan, Nerses; Blaszczyk, Lukasz; Cazes, Antoine; Corvisiero, Pietro; Denizli, Haluk; Dennis, Lawrence; Fersch, Robert; Guillo, Matthieu; Hanretty, Charles; Krahn, Zebulun; Mattione, Paul; Moriya, Kei; Salamanca, Julian; Sokhan, Daria; Bonner, Billy; Dhuga, Kalvir; Heddle, David; Hyde, Charles; Rubin, Philip; Kuznetsov, Viacheslav; Sharov, Dmitri; Huertas, Marco; Cheng, Lu; V; De Masi, Rita; De Vita, Raffaella; Anefalos Pereira, S.; Casey, Liam; Fradi, Ahmed; Hassall, Neil; Moreno, Brahim; Procureur, Sebastien; Amaryan, Moskov; Dzyubak, Oleksandr; De Sanctis, Enzo; Isupov, Evgeny; Kim, Kyungmo; Munevar Espitia, Edwin; Popa, Iulian; Golovach, Evgeny. - Funding Information:
- AC05-060R23177
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