PIONIC D-WAVE EFFECTS IN PP -] PP-PI(0) NEAR-THRESHOLD

Authors
ZLOMANCZUK J BILGER R BRODOWSKI W CALEN H CLEMENT H DYRING J EKSTROM C FALDT G FRANSSON K GUSTAFSSON L HAGGSTROM S HOISTAD B JOHANSSON A JOHANSSON T KILIAN K KULLANDER S KUPSC A MARCINIEWSKI P MOROSOV B MORTSELL A OELERT W RUBER RJMY SCHUBERTH U SHWARTZ B STEPANIAK J SUKHANOV A TUROWIECKI A WAGNER GJ WILHELMI Z WILKIN C ZABIEROWSKI J ZERNOV A
Citation
J. Zlomanczuk et al., PIONIC D-WAVE EFFECTS IN PP -] PP-PI(0) NEAR-THRESHOLD, Physics letters. Section B, 436(3-4), 1998, pp. 251-256
Citations number
14
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
436
Issue
3-4
Year of publication
1998
Pages
251 - 256
Database
ISI
SICI code
0370-2693(1998)436:3-4<251:PDEIP->2.0.ZU;2-M
Abstract
The angular distribution of neutral pions produced in the pp --> pp pi (0) reaction has been measured at a beam energy of 310 MeV. Significan t deviations from isotropy are found, which increase for small excitat ion energies of the final proton-proton pair. The results imply that d -wave pion production is important, even close to threshold. The param eter deduced for this is in quantitative agreement with data taken at very low excitation energy but various beam energies. Evidence is also presented for some P-wave excitation in the final proton-proton syste m. (C) 1998 Elsevier Science B.V. All rights reserved.