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Type: Journal article
Title: Spin structure of the pion
Author: Brommel, D.
Diehl, M.
Gockeler, M.
Hagler, P.
Horsley, R.
Nakamura, Y.
Pleiter, D.
Rakow, P.
Schafer, A.
Schierholz, G.
Stüben, H.
Zanotti, J.
Citation: Physical Review Letters, 2008; 101(12):122001:1-122001:4
Publisher: American Physical Soc
Issue Date: 2008
ISSN: 0031-9007
Statement of
D. Brömmel, M. Diehl, M. Göckeler, Ph. Hägler, R. Horsley, Y. Nakamura, D. Pleiter, P. E. L. Rakow, A. Schäfer, G. Schierholz, H. Stüben, and J. M. Zanotti (QCDSF/UKQCD Collaborations)
Abstract: We present the first calculation of the transverse spin structure of the pion in lattice QCD. Our simulations are based on two flavors of nonperturbatively improved Wilson fermions, with pion masses as low as 400 MeV in volumes up to (2.1 fm)³ and lattice spacings below 0.1 fm. We find a characteristic asymmetry in the spatial distribution of transversely polarized quarks. This asymmetry is very similar in magnitude to the analogous asymmetry we previously obtained for quarks in the nucleon. Our results support the hypothesis that all Boer-Mulders functions are alike.
Keywords: QCDSF/UKQCD Collaborations
Rights: © 2008 The American Physical Society
RMID: 0020120171
DOI: 10.1103/PhysRevLett.101.122001
Appears in Collections:Chemistry and Physics publications

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