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Title: Single spin asymmetries of inclusive hadrons produced in electron scattering from a transversely polarized 3 He target

Journal Article · · Physical Review C, Nuclear Physics
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We report the first measurement of target single-spin asymmetries (AN) in the inclusive hadron production reaction, e + 3He↑→h+X, using a transversely polarized 3 He target. This experiment was conducted at Jefferson Lab in Hall A using a 5.9-GeV electron beam. Three types of hadrons (π±, K± and proton) were detected in the transverse hadron momentum range 0.54 < pT < 0.74 GeV/c. The range of xF for pions was -0.29 < xF< -0.23 and for kaons -0.25 < xF<-0.18. The observed asymmetry strongly depends on the type of hadron. A positive asymmetry is observed for π+ and K+. A negative asymmetry is observed for π–. The magnitudes of the asymmetries follow |Aπ |<|Aπ +|<|AK +|. The K and proton asymmetries are consistent with zero within the experimental uncertainties. The π+ and π asymmetries measured for the 3He target and extracted for neutrons are opposite in sign with a small increase observed as a function of pT.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Mississippi State Univ., Mississippi State, MS (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
Jefferson Lab Hall A Collaboration
Grant/Contract Number:
AC05-06OR23177; FG02-07ER41528
OSTI ID:
1127121
Alternate ID(s):
OSTI ID: 1599865
Report Number(s):
JLAB-PHY-13-1826; DOE/OR/23177-2907; arXiv:1311.1866; PRVCAN; TRN: US1601146
Journal Information:
Physical Review C, Nuclear Physics, Vol. 89, Issue 4; ISSN 0556-2813
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 38 works
Citation information provided by
Web of Science

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Cited By (8)

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3D structure and nuclear targets journal June 2016
Where do we stand with a 3-D picture of the proton? journal June 2016
The spin structure of the nucleon journal January 2005
The spin structure of the nucleon journal January 1994
The Spin Structure of the Nucleon: Proceeding of International School of Nucleon Structure: 1st Course conference April 2017
Operator Constraints for Twist-3 Functions and Lorentz Invariance Properties of Twist-3 Observables text January 2015
Double-Longitudinal Spin Asymmetry in Single-Inclusive Lepton Scattering at NLO text January 2017