This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1016/S0370-2693(02)03166-0 in citations.
Isospin symmetry breaking and scaling observed in pion production in p+d reactions
Isospin symmetry breaking and scaling observed in pion production in p+d reactions
A stack of annular detectors made of high purity germanium was used to measure p+d --> He-3+pi(0) and p+d --> H-3+pi(+) differential and total cross sections at beam momenta from 900 to 1050 MeV/c. The total cross sections are consistent with Delta-excitation. The differential data consist of...
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Personal Name(s): | Abdel-Samad, S. |
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Bojowald, J. / Budzanowski, A. / Chatterjee, A. / Ernst, J. / Frekers, D. / Hawranek, P. / Ilieva, J. / Jarczyk, L. / Kilian, K. / Kliczewski, S. / Klimala, W. / Kolev, D. / Kravcikova, M. / Kutsarova, T. / Lieb, J. / Machner, H. / Magiera, A. / Martinska, G. / Nann, H. / Pentchev, L. / Protic, R. K. / Razen, B. / von Rossen, P. / Roy, B. J. / Siudak, I. M. / Strzalkowski, A. / Tsenov, R. / Ulicny, M. / Urban, J. / Zwoll, K. | |
Contributing Institute: |
Institut 1 (Experimentelle Kernphysik I); IKP-E-I |
Published in: | Physics letters / B, 553 (2003) |
Imprint: |
Amsterdam
North-Holland Publ.
2003
|
DOI: |
10.1016/S0370-2693(02)03166-0 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen |
Series Title: |
Physics Letters B
553 |
Subject (ZB): | |
Publikationsportal JuSER |
A stack of annular detectors made of high purity germanium was used to measure p+d --> He-3+pi(0) and p+d --> H-3+pi(+) differential and total cross sections at beam momenta from 900 to 1050 MeV/c. The total cross sections are consistent with Delta-excitation. The differential data consist of two components. One corresponds to large momentum transfer from the projectile to the pion, the other to small momentum transfer. The former shows an independence of the slope as function of the momentum transfer t (scaling). The scale parameter is different for pi(+) and pi(0) emission which violates isospin symmetry. The second component which is almost isotropic is in agreement with isospin symmetry. It is approximately a quarter of the total yield in the Delta resonance region. (C) 2002 Elsevier Science B.V. All rights reserved. |