Third Zemach moment of the proton

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.83.012201· OSTI ID:1004065

Ian C. Cloet, Gerald A. Miller

Modern electron scattering experiments have determined the proton electric form factor, G_{Ep}(Q^2), to high precision. We utilize this data, represented by the different form factor parametrizations, to compute the third Zemach moment of the proton charge distribution. We find that existing data rule out a value of the third Zemach moment large enough to explain the current puzzle with the proton charge radius determined from the Lamb shift in muonic hydrogen. This is in contrast with the recent claim of De Rujula [arXiv:1008.3861].

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1004065
• Report Number(s): JLAB-THY-11-1159; DOE/OR/23177-1422; arXiv:1008.4345; TRN: US201103%%305
• Journal Information: Physical Review C, Vol. 83
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
ACCURACY
CHARGE DISTRIBUTION
ELECTRONS
FORM FACTORS
HYDROGEN
LAMB SHIFT
PROTONS
SCATTERING