$\eta$ MAID-2015: update with new data and new resonances - INSPIRE

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$\eta$ MAID-2015: update with new data and new resonances

2015

6 pages

Part of Proceedings, Mini-Workshop Bled 2015: Exploring Hadron Resonances : Bled, Slovenia, July 5-11, 2015, 9-15

Published in:

Bled Workshops Phys. 16 (2015) 1, 9-15

Contribution to:

Mini-Workshop Bled 2015: Exploring Hadron Resonances, 9-15

e-Print:

1602.05820 [nucl-th]

View in:

ADS Abstract Service

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Abstract: (arXiv)

Recent data for

\eta

and

\eta\prime

photoproduction on protons obtained by the A2 Collaboration at MAMI are presented. The total cross section for

\eta

photoproduction demonstrates a cusp at the energy corresponding to the

\eta\prime

threshold. The new data and existing data from GRAAL, CBELSA/TAPS, and CLAS collaborations have been analyzed by an expansion in terms of associated Legendre polynomials. %A Legendre decomposition shows the sensitivity to small partial-wave contributions. The isobar model

\eta

MAID updated with

\eta \prime

channel and new resonances have been used to fit the new data. The new solution

\eta

MAID-2015 reasonably good describes the data in the photon beam energy region up to 3.7 GeV.

Note:

6 pages, 6 figures, Mini-Workshop "Exploring Hadron Resonances", Bled, Slovenia, July 5-11, 2015

eta: photoproduction
eta(958): photoproduction
beam: energy
photon: beam
total cross section
isobar model
partial wave
Mainz Linac
sensitivity
CLAS

References(12)

Figures(6)

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