Hard Photodisintegration of a Proton Pair
Journal Article
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· Physics Letters B
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- 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.
- 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
Cited by: 14 works
Citation information provided by
Web of Science
Web of Science
Transition between nuclear and quark–gluon descriptions of hadrons and light nuclei
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journal | July 2012 |
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