Helicity dependence of pion photoproduction: New results from Mainz - INSPIRE

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Helicity dependence of pion photoproduction: New results from Mainz

GDH and
A2

Collaborations

•

P. Pedroni
(
- INFN, Pavia
)

for the collaborations.

Oct, 2002

10 pages

Part of The structure of baryons. Proceedings, 10th International Conference, Baryons'04, Palaiseau, France, October 25-29, 2004, 41-50

Published in:

Nucl.Phys.A 755 (2005) 451-454

Contribution to:

- Baryons 2004
, 41-50

DOI:

10.1016/j.nuclphysa.2005.03.054

Experiments:

View in:

Nuclear Science References

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Abstract: (Elsevier)

The helicity dependence of all single- and double-pion photoproduction channels on the proton has been measured for the first time at incident photon energies from 200 to 800 MeV. The measurement at the tagged photon beam facility of the MAMI accelerator in Mainz used the large acceptance detector DAPHNE and a frozen-spin target.

talk: Pittsburgh 2002/10/09
photon p: inelastic scattering
photon: polarized beam
polarized target
pi: photoproduction
pi: pair production
total cross section: energy dependence
total cross section: helicity
differential cross section: helicity
N(1520): photoproduction

References(9)

Figures(0)

[1]

S.B. Gerasimov

- J.Nucl.Phys. 2 (1966) 430

[1]

Exact Sum Rule for Nucleon Magnetic Moments

S.D. Drell
(
- SLAC
)
,
Anthony C. Hearn
(
- Stanford U., ITP
)

- Phys.Rev.Lett. 16 (1966) 908-911
•
DOI:
- 10.1103/PhysRevLett.16.908

[2]

Helicity dependence of gamma p --> N pi below 450-MeV and contribution to the Gerasimov-Drell-Hearn sum rule

GDH and
A2

Collaborations

•

J. Ahrens
(
- Mainz U.
)

et al.

- Phys.Rev.Lett. 84 (2000) 5950-5954
•
DOI:
- 10.1103/PhysRevLett.84.5950

[3]

J. Ahrens

- Phys.Rev.Lett. 87 (2001) 02203

[4]

The Helicity amplitudes A(1/2) and A(3/2) for the D(13)(1520) resonance obtained from the polarized-gamma polarized-p ---> p pi0 reaction

GDH and
A2

Collaborations

•

J. Ahrens

et al.

- Phys.Rev.Lett. 88 (2002) 232002
•
e-Print:
- hep-ex/0203006
•
DOI:
- 10.1103/PhysRevLett.88.232002

[5]

Helicity dependence of the gamma(pol.) p(pol.) --> n pi+ pi0 reaction in the second resonance region

GDH and
A2

Collaborations

•

J Ahrens
(
- Mainz U., Inst. Kernphys.
)

et al.

- Phys.Lett.B 551 (2003) 49-55
•
DOI:
- 10.1016/S0370-2693(02)03008-3

[6]

Helicity dependence of the $\gamma p\to N \pi$ channels and multipole analysis in the $\Delta$ region

GDH and
A2

Collaborations

•

J. Ahrens

et al.

- Eur.Phys.J.A 21 (2004) 2, 323-333
•
DOI:
- 10.1140/epja/i2003-10216-x

[7]

Updated resonance photodecay amplitudes to 2-GeV

- Phys.Rev.C 53 (1996) 430-440
•
e-Print:
- nucl-th/9509005
•
DOI:
- 10.1103/PhysRevC.53.430

[8]

A Unitary isobar model for pion photoproduction and electroproduction on the proton up to 1-GeV

- Nucl.Phys.A 645 (1999) 145-174
•
e-Print:
- nucl-th/9807001
•
DOI:
- 10.1016/S0375-9474(98)00572-7