Hard Photodisintegration of a Proton Pair

Pomerantz, Ishay; Bubis, Nathaniel; Allada, Kalyan; Beck, Arie; Beck, Sara; Berman, Barry L.; Boeglin, Werner U.; Camsonne, Alexandre; Canan, Mustafa; Chirapatpimol, Khem; Cisbani, Evaristo; Cusanno, Francesco; de Jager, Cornelis W.; Dutta, Chirajib; Garibaldi, Franco; Geagla, Octavian; Gilman, Ronald; Glister, Jacqueline F.; Higinbotham, Douglas W.; Jiang, Xiaodong; Katramatou, A. T.; Khrosinkova, Elena; Lee, B. W.; LeRose, John J.; Lindgren, Richard A.; McCullough, Emily; Meekins, David G.; Michaels, Robert W.; Moffit, Bryan J.; Petratos, Gerassimos G.; Piasetzky, Eliazer I.; Qian, Xin; Qiang, Yi; Rodriguez, I.; Ron, Guy; Saha, Arun; Sarty, Adam J.; Sawatzky, Bradley D.; Schulte, Elaine C.; Shneor, Ran; Sparveris, NIkolaos; Subedi, Ramesh R.; Sulkosky, Vincent A.; Wang, Y.; Wojtsekhowski, Bogdan B.; Yan, X.; Yao, H.; Zhan, Xiaohui; Zheng, Xiaochao

doi:10.1016/j.physletb.2009.12.050

Title: Hard Photodisintegration of a Proton Pair

Journal Article · Fri Jan 08 00:00:00 EST 2010 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2009.12.050· OSTI ID:980896

Pomerantz, Ishay ^[1]; Bubis, Nathaniel ^[1]; Allada, Kalyan ^[2]; Beck, Arie ^[3]; Beck, Sara ^[3]; Berman, Barry L. ^[4]; Boeglin, Werner U. ^[5]; Camsonne, Alexandre ^[6]; Canan, Mustafa ^[7]; Chirapatpimol, Khem ^[8]; Cisbani, Evaristo ^[9]; Cusanno, Francesco ^[9]; de Jager, Cornelis W. ^[6]; Dutta, Chirajib ^[10]; Garibaldi, Franco ^[9]; Geagla, Octavian ^[7]; Gilman, Ronald ^[11]; Glister, Jacqueline F. ^[12]; Higinbotham, Douglas W. ^[6]; Jiang, Xiaodong ^[13] more »

Tel Aviv Univ., Tel Aviv Israel
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Nuclear Research Center -Negev, Beer-Sheva, Israel
George Washington Univ., Washington, DC (United States)
Florida Intl Univ., Miami, FL (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Old Dominion Univ., Norfolk, VA (United States)
Univ. of Virginia, Charlottesville, VA (United States)
National Inst. of Nuclear Physics (INFN), Rome (Italy)
Univ. of Kentucky, Lexington, KY (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Rutgers Univ., Piscataway, NJ (United States)
Saint Mary's Univ., Halifax, Nova Scotia, Canada; Dalhousie Univ., Halifax, Nova Scotia, Canada
Rutgers Univ., Piscataway, NJ (United States)
Kent State Univ., Kent, OH (United States)
Seoul National Univ. (Korea, Republic of)
Saint Mary's Univ., Halifax, Nova Scotia, Canada
College of William and Mary, Williamsburg, VA (United States)
Tel Aviv Univ., Tel Aviv, Israel
Duke Univ., Durham, NC (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Univ. of Virginia, Charlottesville, VA (United States); Temple Univ., Philadelphia, PA
Temple Univ., Philadelphia, PA
Univ. of Illinois, Urbana, IL (United States)

We present the first study of high energy photodisintegration of proton-pairs through the gamma + 3He -> p+p+n channel. Photon energies from 0.8 to 4.7 GeV were used in kinematics corresponding to a proton pair with high relative momentum and a neutron nearly at rest. An s^{-11} scaling of the cross section was observed, as predicted by the constituent counting rule. The onset of the scaling is at a higher energy and the cross section is significantly lower then for pn pair photodisintegration. For photon energies below the scaling region, the scaled cross section was found to present a strong energy-dependent structure not observed in deuteron photodisintegration.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 980896

Report Number(s):: JLAB-PHY-09-1050; DOE/OR/23177-0957; TRN: US1003961

Journal Information:: Physics Letters B, Vol. 684, Issue 2-3; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 14 works

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