New QCD sum rules for the nucleon tensor charge

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.5618· OSTI ID:543893

Jin, X; Tang, J ^[1]

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1. Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

Two new QCD sum rules for the nucleon tensor charge are derived from a mixed correlator of spin-1/2 and spin-3/2 nucleon interpolating fields. These sum rules are analyzed along with a sum rule obtained from the usual correlator of a general spin-1/2 nucleon interpolating field. The validity and reliability of the sum rules are examined by monitoring the contaminations arising from the transitions and continuum and the convergence of the operator product expansion. Valid sum rules are identified and their predictions are presented. It is found that the vacuum tensor susceptibility induced by the external field plays an important role in determining both the validity and predictions of the sum rules. The uncertainties associated with the sum-rule predictions are also discussed. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 543893
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGES
CORRELATIONS
NUCLEONS
QUANTUM CHROMODYNAMICS
SPINORS
SUM RULES
TENSORS