Determination of the beam-spin asymmetry of deuteron photodisintegration in the energy region Eγ=1.1–2.3 GeV

N. Zachariou Y. Ilieva B. L. Berman N. Ya. Ivanov M. M. Sargsian R. Avakian G. Feldman P. Nadel-Turonski K. P. Adhikari D. Adikaram M. D. Anderson S. Anefalos Pereira H. Avakian R. A. Badui N. A. Baltzell M. Battaglieri V. Baturin I. Bedlinskiy A. S. Biselli W. J. Briscoe W. K. Brooks V. D. Burkert T. Cao D. S. Carman A. Celentano S. Chandavar G. Charles 1 L. Colaneri P. L. Cole N. Compton M. Contalbrigo O. Cortes V. Crede A. D'Angelo R. De Vita E. De Sanctis A. Deur C. Djalali R. Dupre 1 H. Egiyan A. El Alaoui L. El Fassi L. Elouadrhiri G. Fedotov S. Fegan A. Filippi J. A. Fleming T. A. Forest A. Fradi 1 N. Gevorgyan Y. Ghandilyan G. P. Gilfoyle K. L. Giovanetti F. X. Girod 2 D. I. Glazier E. Golovatch R. W. Gothe K. A. Griffioen M. Guidal 1 K. Hafidi C. Hanretty N. Harrison M. Hattawy 1 K. Hicks D. Ho M. Holtrop S. M. Hughes D. G. Ireland B. S. Ishkhanov E. L. Isupov H. Jiang H. S. Jo K. Joo D. Keller G. Khachatryan M. Khandaker A. Kim W. Kim F. J. Klein V. Kubarovsky P. Lenisa K. Livingston H. Y. Lu I. J. D. Macgregor N. Markov P. T. Mattione B. Mckinnon T. Mineeva M. Mirazita V. I. Mokeeev R. A. Montgomery H. Moutarde 2 C. Munoz Camacho L. A. Net S. Niccolai 1 G. Niculescu I. Niculescu M. Osipenko A. I. Ostrovidov K. Park E. Pasyuk W. Phelps J. J. Phillips S. Pisano 1 O. Pogorelko S. Pozdniakov J. W. Price S. Procureur 2 Y. Prok D. Protopopescu A. J. R. Puckett M. Ripani A. Rizzo G. Rosner P. Rossi P. Roy F. Sabatié 2 C. Salgado D. Schott R. A. Schumacher E. Seder I. Senderovich Y. G. Sharabian Iu. Skorodumina G. D. Smith D. I. Sober D. Sokhan N. Sparveris S. Stepanyan S. Strauch V. Sytnik M. Taiuti Ye Tian M. Ungaro H. Voskanyan E. Voutier N. K. Walford D. Watts X. Wei M. H. Wood L. Zana J. Zhang Z. W. Zhao I. Zonta
Abstract : The beam-spin asymmetry, Σ, for the reaction γd→pn has been measured using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility (JLab) for six photon-energy bins, between 1.1 and 2.3 GeV, and proton angles in the center-of-mass frame, θc.m., between 25∘ and 160∘. These are the first measurements of beam-spin asymmetries at θc.m.=90∘ for photon-beam energies above 1.6 GeV, and the first measurements for angles other than θc.m.=90∘. The angular and energy dependence of Σ is expected to aid in the development of QCD-based models to understand the mechanisms of deuteron photodisintegration in the transition region between hadronic and partonic degrees of freedom, where both effective field theories and perturbative QCD cannot make reliable predictions.
Type de document :
Article dans une revue
Physical Review C, American Physical Society, 2015, 91 (5), pp.055202. 〈10.1103/PhysRevC.91.055202〉
Liste complète des métadonnées

http://hal.in2p3.fr/in2p3-01192634
Contributeur : Sophie Heurteau <>
Soumis le : jeudi 3 septembre 2015 - 11:03:44
Dernière modification le : mercredi 31 janvier 2018 - 12:12:54

Lien texte intégral

Identifiants

Citation

N. Zachariou, Y. Ilieva, B. L. Berman, N. Ya. Ivanov, M. M. Sargsian, et al.. Determination of the beam-spin asymmetry of deuteron photodisintegration in the energy region Eγ=1.1–2.3 GeV. Physical Review C, American Physical Society, 2015, 91 (5), pp.055202. 〈10.1103/PhysRevC.91.055202〉. 〈in2p3-01192634〉

Partager

Métriques

Consultations de la notice

90