Measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the reaction (3)He(↑)(e,e')X

J Katich¹, X Qian², Y X Zhao³, K Allada⁴, K Aniol⁵, J R M Annand⁶, T Averett⁷, F Benmokhtar⁸, W Bertozzi⁹, P C Bradshaw⁷, P Bosted⁷, A Camsonne¹⁰, M Canan¹¹, G D Cates¹², C Chen¹³, J-P Chen¹⁰, W Chen¹⁴, K Chirapatpimol¹², E Chudakov¹⁰, E Cisbani¹⁵, J C Cornejo⁵, F Cusanno¹⁵, M M Dalton¹², W Deconinck⁹, C W de Jager¹⁶, R De Leo¹⁷, X Deng¹², A Deur¹⁰, H Ding¹², P A M Dolph¹², C Dutta⁴, D Dutta¹⁸, L El Fassi¹⁹, S Frullani¹⁵, H Gao¹⁴, F Garibaldi¹⁵, D Gaskell¹⁰, S Gilad⁹, R Gilman²⁰, O Glamazdin²¹, S Golge¹¹, L Guo²², D Hamilton⁶, O Hansen¹⁰, D W Higinbotham¹⁰, T Holmstrom²³, J Huang⁹, M Huang¹⁴, H F Ibrahim²⁴, M Iodice²⁵, X Jiang²⁶, G Jin¹², M K Jones¹⁰, A Kelleher⁷, W Kim²⁷, A Kolarkar⁴, W Korsch⁴, J J LeRose¹⁰, X Li²⁸, Y Li²⁸, R Lindgren¹², N Liyanage¹², E Long²⁹, H-J Lu³, D J Margaziotis⁵, P Markowitz³⁰, S Marrone¹⁷, D McNulty³¹, Z-E Meziani³², R Michaels¹⁰, B Moffit³³, C Muñoz Camacho³⁴, S Nanda¹⁰, A Narayan¹⁸, V Nelyubin¹², B Norum¹², Y Oh³⁵, M Osipenko³⁶, D Parno⁸, J C Peng³⁷, S K Phillips²⁹, M Posik³², A J R Puckett³⁸, Y Qiang³⁹, A Rakhman⁴⁰, R D Ransome⁴¹, S Riordan¹², A Saha¹⁰, B Sawatzky⁴², E Schulte⁴¹, A Shahinyan⁴³, M H Shabestari¹², S Širca⁴⁴, S Stepanyan⁴⁵, R Subedi¹², V Sulkosky³³, L-G Tang¹³, A Tobias¹², G M Urciuoli⁴⁶, I Vilardi¹⁷, K Wang¹², Y Wang³⁷, B Wojtsekhowski¹⁰, X Yan³, H Yao³², Y Ye³, Z Ye¹³, L Yuan¹³, X Zhan⁹, Y Zhang⁴⁷, Y-W Zhang⁴⁷, B Zhao⁷, X Zheng¹², L Zhu⁴⁸, X Zhu¹⁴, X Zong¹⁴

Affiliations

¹ College of William and Mary, Williamsburg, Virginia 23187, USA and University of Colorado, Boulder, Colorado 80309, USA.
² Duke University, Durham, North Carolina 27708, USA and Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA and Brookhaven National Laboratory, Upton, New York 11973, USA.
³ University of Science and Technology of China, Hefei 230026, People's Republic of China.
⁴ University of Kentucky, Lexington, Kentucky 40506, USA.
⁵ California State University, Los Angeles, Los Angeles, California 90032, USA.
⁶ University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom.
⁷ College of William and Mary, Williamsburg, Virginia 23187, USA.
⁸ Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
⁹ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
¹⁰ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
¹¹ Old Dominion University, Norfolk, Virginia 23529, USA.
¹² University of Virginia, Charlottesville, Virginia 22904, USA.
¹³ Hampton University, Hampton, Virginia 23187, USA.
¹⁴ Duke University, Durham, North Carolina 27708, USA.
¹⁵ INFN, Sezione di Roma, I-00161 Rome, Italy and Istituto Superiore di Sanità, I-00161 Rome, Italy.
¹⁶ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and University of Virginia, Charlottesville, Virginia 22904, USA.
¹⁷ INFN, Sezione di Bari and University of Bari, I-70126 Bari, Italy.
¹⁸ Mississippi State University, Mississippi State, Minnesota 39762, USA.
¹⁹ Old Dominion University, Norfolk, Virginia 23529, USA and Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA.
²⁰ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA.
²¹ Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine.
²² Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
²³ Longwood University, Farmville, Virginia 23909, USA.
²⁴ Cairo University, Giza 12613, Egypt.
²⁵ INFN, Sezione di Roma3, I-00146 Rome, Italy.
²⁶ Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA and Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
²⁷ Kyungpook National University, Taegu 702-701, Republic of Korea.
²⁸ China Institute of Atomic Energy, Beijing, People's Republic of China.
²⁹ University of New Hampshire, Durham, New Hampshire 03824, USA.
³⁰ Florida International University, Miami, Florida 33199, USA.
³¹ University of Massachusetts, Amherst, Massachusetts 01003, USA.
³² Temple University, Philadelphia, Pennsylvania 19122, USA.
³³ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
³⁴ Université Blaise Pascal/IN2P3, F-63177 Aubière, France.
³⁵ Seoul National University, Seoul, 151-747, Republic of Korea.
³⁶ INFN, Sezione di Genova, I-16146 Genova, Italy.
³⁷ University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
³⁸ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
³⁹ Duke University, Durham, North Carolina 27708, USA and Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
⁴⁰ Syracuse University, Syracuse, New York 13244, USA.
⁴¹ Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA.
⁴² Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Temple University, Philadelphia, Pennsylvania 19122, USA.
⁴³ Yerevan Physics Institute, Yerevan 375036, Armenia.
⁴⁴ University of Ljubljana, SI-1000 Ljubljana, Slovenia.
⁴⁵ Kyungpook National University, Daegu 702-701, Republic of Korea.
⁴⁶ INFN, Sezione di Roma, I-00161 Rome, Italy.
⁴⁷ Lanzhou University, Lanzhou 730000, Gansu, People's Republic of China.
⁴⁸ Hampton University, Hampton, Virginia 23187, USA and University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.

PMID: 25062169
DOI: 10.1103/PhysRevLett.113.022502

Measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the reaction (3)He(↑)(e,e')X

J Katich et al. Phys Rev Lett. 2014.

. 2014 Jul 11;113(2):022502.

doi: 10.1103/PhysRevLett.113.022502. Epub 2014 Jul 11.

Authors

Affiliations

¹ College of William and Mary, Williamsburg, Virginia 23187, USA and University of Colorado, Boulder, Colorado 80309, USA.
² Duke University, Durham, North Carolina 27708, USA and Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA and Brookhaven National Laboratory, Upton, New York 11973, USA.
³ University of Science and Technology of China, Hefei 230026, People's Republic of China.
⁴ University of Kentucky, Lexington, Kentucky 40506, USA.
⁵ California State University, Los Angeles, Los Angeles, California 90032, USA.
⁶ University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom.
⁷ College of William and Mary, Williamsburg, Virginia 23187, USA.
⁸ Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
⁹ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
¹⁰ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
¹¹ Old Dominion University, Norfolk, Virginia 23529, USA.
¹² University of Virginia, Charlottesville, Virginia 22904, USA.
¹³ Hampton University, Hampton, Virginia 23187, USA.
¹⁴ Duke University, Durham, North Carolina 27708, USA.
¹⁵ INFN, Sezione di Roma, I-00161 Rome, Italy and Istituto Superiore di Sanità, I-00161 Rome, Italy.
¹⁶ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and University of Virginia, Charlottesville, Virginia 22904, USA.
¹⁷ INFN, Sezione di Bari and University of Bari, I-70126 Bari, Italy.
¹⁸ Mississippi State University, Mississippi State, Minnesota 39762, USA.
¹⁹ Old Dominion University, Norfolk, Virginia 23529, USA and Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA.
²⁰ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA.
²¹ Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine.
²² Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
²³ Longwood University, Farmville, Virginia 23909, USA.
²⁴ Cairo University, Giza 12613, Egypt.
²⁵ INFN, Sezione di Roma3, I-00146 Rome, Italy.
²⁶ Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA and Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
²⁷ Kyungpook National University, Taegu 702-701, Republic of Korea.
²⁸ China Institute of Atomic Energy, Beijing, People's Republic of China.
²⁹ University of New Hampshire, Durham, New Hampshire 03824, USA.
³⁰ Florida International University, Miami, Florida 33199, USA.
³¹ University of Massachusetts, Amherst, Massachusetts 01003, USA.
³² Temple University, Philadelphia, Pennsylvania 19122, USA.
³³ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
³⁴ Université Blaise Pascal/IN2P3, F-63177 Aubière, France.
³⁵ Seoul National University, Seoul, 151-747, Republic of Korea.
³⁶ INFN, Sezione di Genova, I-16146 Genova, Italy.
³⁷ University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
³⁸ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
³⁹ Duke University, Durham, North Carolina 27708, USA and Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
⁴⁰ Syracuse University, Syracuse, New York 13244, USA.
⁴¹ Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA.
⁴² Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Temple University, Philadelphia, Pennsylvania 19122, USA.
⁴³ Yerevan Physics Institute, Yerevan 375036, Armenia.
⁴⁴ University of Ljubljana, SI-1000 Ljubljana, Slovenia.
⁴⁵ Kyungpook National University, Daegu 702-701, Republic of Korea.
⁴⁶ INFN, Sezione di Roma, I-00161 Rome, Italy.
⁴⁷ Lanzhou University, Lanzhou 730000, Gansu, People's Republic of China.
⁴⁸ Hampton University, Hampton, Virginia 23187, USA and University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.

PMID: 25062169
DOI: 10.1103/PhysRevLett.113.022502

Abstract

We report the first measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the inclusive reaction 3)He(↑)(e,e')X on a polarized (3)He gas target. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation but can be nonzero if two-photon-exchange contributions are included. The experiment, conducted at Jefferson Lab using a 5.89 GeV electron beam, covers a range of 1.7<W<2.9 GeV, 1.0<Q(2)<4.0 GeV(2) and 0.16<x<0.65. Neutron asymmetries were extracted using the effective nucleon polarization and measured proton-to-(3)He cross-section ratios. The measured neutron asymmetries are negative with an average value of (-1.09±0.38)×10(-2) for invariant mass W>2 GeV, which is nonzero at the 2.89σ level. Our measured asymmetry agrees both in sign and magnitude with a two-photon-exchange model prediction that uses input from the Sivers transverse momentum distribution obtained from semi-inclusive deep-inelastic scattering.

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Measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the reaction (3)He(↑)(e,e')X

Affiliations

Measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the reaction (3)He(↑)(e,e')X

Authors

Affiliations

Abstract

LinkOut - more resources

Full Text Sources

Other Literature Sources

Miscellaneous