Timelike gamma* N -> Delta form factors and Delta Dalitz decay - INSPIRE

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Timelike gamma* N -> Delta form factors and Delta Dalitz decay

G. Ramalho
(
- Lisbon, IST
)
,
M.T. Pena
(
- Lisbon, IST
)

May, 2012

14 pages

Published in:

Phys.Rev.D 85 (2012) 113014

e-Print:

1205.2575 [hep-ph]

DOI:

10.1103/PhysRevD.85.113014

View in:

ADS Abstract Service

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Abstract: (arXiv)

We extend a covariant model, tested before in the spacelike region for the physical and lattice QCD regimes, to a calculation of the gamma* N -> Delta reaction in the timelike region, where the square of the transfered momentum, q^2, is positive (q^2>0). We estimate the Dalitz decay Delta -> Ne+e- and the Delta distribution mass distribution function. The results presented here can be used to simulate the NN -> NNe+e- reactions at moderate beam kinetic energies.

Note:

14 pages, 11 figures

14.20.Gk
12.39.Ki
13.40.Gp
13.40.Hq
Delta: form factor
lattice field theory
covariance
photon nucleon: interaction
Delta: photoproduction
form factor: transition

References(49)

Figures(21)

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