The origins of quark-hadron duality: How does the square of the sum become the sum of the squares?

Journal Article · Tue Jan 30 00:00:00 EST 2001 · Phys.Lett.B509:81-86,2001

OSTI ID:775025

Close, Frank E; Isgur, Nathan

Bloom-Gilman duality demonstrates empirically that the electroproduction of N*'s at low momentum transfers averages smoothly around the scaling curve measured at large momentum transfers. The latter is proportional to the sum of the squares of the constituent charges whereas the former involves the coherent excitation of resonances and is driven by the square of summed constituent charges. We determine the minimal necessary conditions for this equality to be realized so that duality can occur and consider the implications for a range of processes that may be studied soon at CEBAF.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 775025
• Report Number(s): JLAB-THY-01-01; DOE/ER/40150-1807; hep-ph/0102067; OUTP-0107P; TRN: US0200919
• Journal Information: Phys.Lett.B509:81-86,2001, Other Information: No journal information given for this preprint; PBD: 30 Jan 2001; PBD: 30 Jan 2001
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DUALITY
ELECTROPRODUCTION
EXCITATION
MOMENTUM TRANSFER