Easy as $\pi^o$: On the Interpretation of Recent Electroproduction Results - INSPIRE

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Easy as $\pi^o$ : On the Interpretation of Recent Electroproduction Results

Gary R. Goldstein
(
- Tufts U.
)
,
J.Osvaldo Gonzalez Hernandez
(
- Virginia U.
)
,
Simonetta Liuti
(
- Virginia U.
)

Jan, 2012

12 pages

Published in:

J.Phys.G 39 (2012) 115001

e-Print:

1201.6088 [hep-ph]

DOI:

10.1088/0954-3899/39/11/115001

View in:

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Abstract: (arXiv)

Exclusive

\pi^o

electroproduction from nucleons was first suggested by Ahmad, Goldstein and Liuti for extracting from experimental data the tensor charge, transversity and other quantities related to chiral odd combinations of generalized parton distributions. We now explain the details of the process: {\it i)} the connection between the helicity description and the cartesian basis; {\it ii)} the dependence on the momentum transfer squared,

Q^2

, and {\it iii)} the angular momentum, parity, and charge conjugation constraints (

J^{PC}

quantum numbers).

Note:

15 pages, 2 figures, some changes in formalism, and text. Introduced section titles

charge: tensor
parton: distribution function
pi0: electroproduction
generalized parton distribution
momentum transfer dependence
quantum number
transversity
helicity: amplitude analysis
electron p: exclusive reaction
photon p: exclusive reaction

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Figures(3)

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