Elsevier

Nuclear Physics A

Volume 469, Issue 4, 10 August 1987, Pages 617-626
Nuclear Physics A

π+ absorption on 12C in the Δ(1232) region

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Abstract

A search for possible structure in the energy spectrum of forward going protons from the 12C(π+, 3p)X reaction was undertaken. The measurement was done for π+ momenta of 355, 375, and 405 MeV/c. No narrow (less than 20 MeV) structure was found. A broad structure corresponding to a quasi-free scattering of the pion before capture, superimposed on a continuum background, was observed. The data indicate that additional free nucleons or light products are usually present in the final state.

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a

On leave from the Univ. of Virginia, Charlottesville, VA, USA.

b

Present address: BASF, Heidelberg, Germany.

c

Present address: T.K.E., Nürnberg, Germany.

d

Present address: Univ. Florida, Gainsville, FL, USA.

e

Present address: Rutgers Univ., Piscataway, NJ, USA.

f

Present address: Univ. Mainz, Mainz, Germany.

g

Present address: NIKHEF, Amsterdam, Netherlands.

h

Present address: Univ. Bonn, Bonn, Germany.

i

Present address: New Mexico State Univ., Las Cruces, NM, USA.

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