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

CLAS Collaboration; Nicholas 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; 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; H. Egiyan; A. El Alaoui; L. El Fassi; L. Elouadrhiri; G. Fedotov; S. Fegan; A. Filippi; J. A. Fleming; Gary Smith; D. Watts; L. Zana

doi:10.1103/PhysRevC.91.055202

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

CLAS Collaboration, Nicholas 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. BiselliW. J. Briscoe, W. K. Brooks, V. D. Burkert, T. Cao, D. S. Carman, A. Celentano, S. Chandavar, G. Charles, 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, H. Egiyan, A. El Alaoui, L. El Fassi, L. Elouadrhiri, G. Fedotov, S. Fegan, A. Filippi, J. A. Fleming, Gary Smith, D. Watts, L. Zana

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The beam-spin asymmetry, Sigma, for the reaction gamma d -> 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, theta(c.m.), between 25 degrees and 160 degrees. These are the first measurements of beam-spin asymmetries at theta(c.m.) = 90. for photon-beam energies above 1.6 GeV, and the first measurements for angles other than theta(c.m.) = 90 degrees. The angular and energy dependence of Sigma 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.

Original language	English
Article number	055202
Number of pages	16
Journal	Physical Review C
Volume	91
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.91.055202
Publication status	Published - 13 May 2015

Keywords / Materials (for Non-textual outputs)

LINEARLY POLARIZED PHOTONS
PROTON ELASTIC-SCATTERING
2-BODY PHOTODISINTEGRATION
CROSS-SECTION
HARD PHOTODISINTEGRATION
QUANTUM CHROMODYNAMICS
STRING MODEL
CLAS
PHOTOPRODUCTION
DISINTEGRATION

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CLAS Collaboration, Zachariou, N., Ilieva, Y., Berman, B. L., Ivanov, N. Y., Sargsian, M. M., Avakian, R., Feldman, G., Nadel-Turonski, P., Adhikari, K. P., Adikaram, D., Anderson, M. D., Pereira, S. A., Avakian, H., Badui, R. A., Baltzell, N. A., Battaglieri, M., Baturin, V., Bedlinskiy, I., ... Zana, L. (2015). Determination of the beam-spin asymmetry of deuteron photodisintegration in the energy region E-gamma=1.1-2.3 GeV. Physical Review C, 91(5), Article 055202. https://doi.org/10.1103/PhysRevC.91.055202

@article{a218a15e84a14b69825485c3808457d9,

title = "Determination of the beam-spin asymmetry of deuteron photodisintegration in the energy region E-gamma=1.1-2.3 GeV",

abstract = "The beam-spin asymmetry, Sigma, for the reaction gamma d -> 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, theta(c.m.), between 25 degrees and 160 degrees. These are the first measurements of beam-spin asymmetries at theta(c.m.) = 90. for photon-beam energies above 1.6 GeV, and the first measurements for angles other than theta(c.m.) = 90 degrees. The angular and energy dependence of Sigma 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.",

keywords = "LINEARLY POLARIZED PHOTONS, PROTON ELASTIC-SCATTERING, 2-BODY PHOTODISINTEGRATION, CROSS-SECTION, HARD PHOTODISINTEGRATION, QUANTUM CHROMODYNAMICS, STRING MODEL, CLAS, PHOTOPRODUCTION, DISINTEGRATION",

author = "{CLAS Collaboration} and Nicholas Zachariou and Y. Ilieva and Berman, {B. L.} and Ivanov, {N. Ya.} and Sargsian, {M. M.} and R. Avakian and G. Feldman and P. Nadel-Turonski and Adhikari, {K. P.} and D. Adikaram and Anderson, {M. D.} and Pereira, {S. Anefalos} and H. Avakian and Badui, {R. A.} and Baltzell, {N. A.} and M. Battaglieri and V. Baturin and I. Bedlinskiy and Biselli, {A. S.} and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and T. Cao and Carman, {D. S.} and A. Celentano and S. Chandavar and G. Charles and L. Colaneri and Cole, {P. L.} and N. Compton and M. Contalbrigo and O. Cortes and V. Crede and A. D'Angelo and {De Vita}, R. and {De Sanctis}, E. and A. Deur and C. Djalali and R. Dupre and H. Egiyan and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and G. Fedotov and S. Fegan and A. Filippi and Fleming, {J. A.} and Gary Smith and D. Watts and L. Zana",

note = "18 pages",

year = "2015",

month = may,

day = "13",

doi = "10.1103/PhysRevC.91.055202",

language = "English",

volume = "91",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "5",

}

CLAS Collaboration, Zachariou, N, Ilieva, Y, Berman, BL, Ivanov, NY, Sargsian, MM, Avakian, R, Feldman, G, Nadel-Turonski, P, Adhikari, KP, Adikaram, D, Anderson, MD, Pereira, SA, Avakian, H, Badui, RA, Baltzell, NA, Battaglieri, M, Baturin, V, Bedlinskiy, I, Biselli, AS, Briscoe, WJ, Brooks, WK, Burkert, VD, Cao, T, Carman, DS, Celentano, A, Chandavar, S, Charles, G, Colaneri, L, Cole, PL, Compton, N, Contalbrigo, M, Cortes, O, Crede, V, D'Angelo, A, De Vita, R, De Sanctis, E, Deur, A, Djalali, C, Dupre, R, Egiyan, H, El Alaoui, A, El Fassi, L, Elouadrhiri, L, Fedotov, G, Fegan, S, Filippi, A, Fleming, JA, Smith, G, Watts, D & Zana, L 2015, 'Determination of the beam-spin asymmetry of deuteron photodisintegration in the energy region E-gamma=1.1-2.3 GeV', Physical Review C, vol. 91, no. 5, 055202. https://doi.org/10.1103/PhysRevC.91.055202

TY - JOUR

T1 - Determination of the beam-spin asymmetry of deuteron photodisintegration in the energy region E-gamma=1.1-2.3 GeV

AU - CLAS Collaboration

AU - Zachariou, Nicholas

AU - Ilieva, Y.

AU - Berman, B. L.

AU - Ivanov, N. Ya.

AU - Sargsian, M. M.

AU - Avakian, R.

AU - Feldman, G.

AU - Nadel-Turonski, P.

AU - Adhikari, K. P.

AU - Adikaram, D.

AU - Anderson, M. D.

AU - Pereira, S. Anefalos

AU - Avakian, H.

AU - Badui, R. A.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Baturin, V.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Cao, T.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Compton, N.

AU - Contalbrigo, M.

AU - Cortes, O.

AU - Crede, V.

AU - D'Angelo, A.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Djalali, C.

AU - Dupre, R.

AU - Egiyan, H.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Fedotov, G.

AU - Fegan, S.

AU - Filippi, A.

AU - Fleming, J. A.

AU - Smith, Gary

AU - Watts, D.

AU - Zana, L.

N1 - 18 pages

PY - 2015/5/13

Y1 - 2015/5/13

N2 - The beam-spin asymmetry, Sigma, for the reaction gamma d -> 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, theta(c.m.), between 25 degrees and 160 degrees. These are the first measurements of beam-spin asymmetries at theta(c.m.) = 90. for photon-beam energies above 1.6 GeV, and the first measurements for angles other than theta(c.m.) = 90 degrees. The angular and energy dependence of Sigma 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.

AB - The beam-spin asymmetry, Sigma, for the reaction gamma d -> 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, theta(c.m.), between 25 degrees and 160 degrees. These are the first measurements of beam-spin asymmetries at theta(c.m.) = 90. for photon-beam energies above 1.6 GeV, and the first measurements for angles other than theta(c.m.) = 90 degrees. The angular and energy dependence of Sigma 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.

KW - LINEARLY POLARIZED PHOTONS

KW - PROTON ELASTIC-SCATTERING

KW - 2-BODY PHOTODISINTEGRATION

KW - CROSS-SECTION

KW - HARD PHOTODISINTEGRATION

KW - QUANTUM CHROMODYNAMICS

KW - STRING MODEL

KW - CLAS

KW - PHOTOPRODUCTION

KW - DISINTEGRATION

U2 - 10.1103/PhysRevC.91.055202

DO - 10.1103/PhysRevC.91.055202

M3 - Article

SN - 2469-9985

VL - 91

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 055202

ER -

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

Abstract

Keywords / Materials (for Non-textual outputs)

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