Electromagnetic form factors of the Delta with D-waves

Ramalho, G.; Pena, M.T.; Gross, Franz

doi:10.1103/PhysRevD.81.113011

Electromagnetic form factors of the Delta with D-waves

G. Ramalho
(
- Jefferson Lab and
- Lisbon, CFTP
)
,
M.T. Pena
(
- Lisbon, CFTP and
- Lisbon, IST
)
,
Franz Gross
(
- Jefferson Lab and
- William-Mary Coll.
)

Feb, 2010

30 pages

Published in:

Phys.Rev.D 81 (2010) 113011

e-Print:

1002.4170 [hep-ph]

DOI:

10.1103/PhysRevD.81.113011

Report number:

JLAB-THY-10-1139

View in:

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Abstract: (arXiv)

The electromagnetic form factors of the Delta baryon are evaluated within the framework of a covariant spectator quark model, where S and D-states are included in the

\Delta

wave function. We predict all the four Delta multipole form factors: the electric charge GE0, the magnetic dipole GM1, the electric quadrupole GE2 and the magnetic octupole GM3. We compare our predictions with other theoretical calculations. Our results are compatible with the available experimental data and recent lattice QCD data.

Note:

Accepted for publication in PRD. Version with typographic and orthographic corrections. 30 pages, 11 figures

12.38.Gc
14.20.Gk
13.40.Gp
12.39.Ki
form factor: electric
form factor: multipole
Delta(1232): form factor
form factor: magnetic
Delta(1232): wave function
quark model

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