Double Pion Photoproduction off nuclei - search for the in-medium modification of theσ-meson

Data for quasi-free photoproduction of π0π0 and π0π+/- pairs from 7 Li have been analyzed in view of the in-medium properties of hadrons. Data have been measured with the CB/TAPS detector setup using the Glasgow photon tagging spectrometer for incident photon energies up to 820 MeV. The double π0 invariant mass distributions show an enhancement with respect to the mixed charged channel at small invariant masses. This enhancement could be consistent with an in-medium modification of the ππ interaction in the I = J = 0 channel, however effects from final state interactions must also be considered.

Download Full-text

Low energy expansions for double-pion photoproduction

Physical Review Letters ◽

10.1103/physrevlett.73.400 ◽

1994 ◽

Vol 73 (3) ◽

pp. 400-403 ◽

Cited By ~ 9

Author(s):

M. Benmerrouche ◽

E. Tomusiak

Keyword(s):

Pion Photoproduction ◽

Low Energy ◽

Double Pion

Download Full-text

Current Algebra and Double-Pion Photoproduction

Physical Review ◽

10.1103/physrev.174.1969 ◽

1968 ◽

Vol 174 (5) ◽

pp. 1969-1976 ◽

Cited By ~ 3

Author(s):

S. C. Bhargava

Keyword(s):

Current Algebra ◽

Pion Photoproduction ◽

Double Pion

Download Full-text

DOUBLE PION PHOTOPRODUCTION EXPERIMENT AT LNS–TOHOKU

Modern Physics Letters A ◽

10.1142/s0217732308029277 ◽

2008 ◽

Vol 23 (27n30) ◽

pp. 2313-2316 ◽

Cited By ~ 1

Author(s):

◽

H. KANDA ◽

N. CHIGA ◽

Y. FUJII ◽

K. FUTATSUKAWA ◽

...

Keyword(s):

Total Cross Section ◽

Energy Range ◽

Cross Section ◽

Cross Sections ◽

Pion Photoproduction ◽

Total Cross Sections ◽

Free Proton ◽

Double Pion ◽

The Cross

The total cross sections for the π+π− photoproduction on the deuteron were measured in an energy range of 0.8 to 1.1 GeV. The obtained total cross section for the quasi-free π+π− photoproduction on the deuteron was about 60 % of those on the free proton. The cross section for Δ++Δ− photoproduction was derived from the non-quasi-free π+π− photoproduction events. It was smaller than the previous data.

Download Full-text