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Measurement of the pn -> pp pi(0)pi(-) reaction in search for the recently observed resonance structure in d pi(0)pi(0) and d pi(+)pi(-) systems

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Title Measurement of the pn -> pp pi(0)pi(-) reaction in search for the recently observed resonance structure in d pi(0)pi(0) and d pi(+)pi(-) systems
 
Creator ADLARSON, P
AUGUSTYNIAK, W
BARDAN, W
BASHKANOV, M
BERGMANN, FS
BERLOWSKI, M
BHATT, H
BUSCHER, M
CALEN, H
CIEPAL, I
CLEMENT, H
CODERRE, D
CZERWINSKI, E
DEMMICH, K
DOROSHKEVICH, E
ENGELS, R
ERVEN, W
EYRICH, W
FEDORETS, P
FOHL, K
FRANSSON, K
GOLDENBAUM, F
GOSLAWSKI, P
GOSWAMI, A
GRIGORYEV, K
GULLSTROM, CO
HAUENSTEIN, F
HEIJKENSKJOLD, L
HEJNY, V
HINTERBERGER, F
HODANA, M
HOISTAD, B
JANY, A
JANY, BR
JARCZYK, L
JOHANSSON, T
KAMYS, B
KEMMERLING, G
KHAN, FA
KHOUKAZ, A
KIRILLOV, DA
KISTRYN, S
KLAJA, J
KLEINES, H
KLOS, B
KRAPP, M
KRZEMIEN, W
KULESSA, P
KUPSC, A
LALWANI, K
LERSCH, D
LI, L
LORENTZ, B
MAGIERA, A
MAIER, R
MARCINIEWSKI, P
MARIANSKI, B
MIKIRTYCHIANTS, M
MORSCH, HP
MOSKAL, P
NANDI, BK
OHM, H
OZERIANSKA, I
DEL RIO, EP
PISKUNOV, NM
PLUCINSKI, P
PODKOPAL, P
PRASUHN, D
PRICKING, A
PSZCZEL, D
PYSZ, K
PYSZNIAK, A
REDMER, CF
RITMAN, J
ROY, A
RUDY, Z
SAWANT, S
SCHMIDT, A
SCHADMAND, S
SEFZICK, T
SERDYUK, V
SHAH, N
SIEMASZKO, M
SIUDAK, R
SKORODKO, T
SKURZOK, M
SMYRSKI, J
SOPOV, V
STASSEN, R
STEPANIAK, J
STEPHAN, E
STERZENBACH, G
STOCKHORST, H
STROHER, H
SZCZUREK, A
TOLBA, T
TRZCINSKI, A
VARMA, R
WAGNER, GJ
EGLORZ, WW
WOLKE, M
WRONSKA, A
WUSTNER, P
WURM, P
YAMAMOTO, A
YUAN, X
ZABIEROWSKI, J
ZHENG, C
ZIELINSKI, MJ
ZIPPER, W
ZLOMANCZUK, J
ZUPRANSKI, P
ZUREK, M
 
Subject NUCLEON-NUCLEON COLLISIONS
PROTON-PROTON COLLISIONS
DOUBLE-PION PRODUCTION
CROSS-SECTIONS
ISOSPIN DECOMPOSITION
PI(0)PI(0) PRODUCTION
MESON PRODUCTION
ROPER RESONANCE
GEV/C
EXCITATION
 
Description Exclusive measurements of the quasifree pn -> pp pi(0)pi(-) reaction have been performed by means of pd collisions at T-p = 1.2 GeV using the wide angle shower apparatus (WASA) detector setup at the cooler synchrotron COSY (Institut fur Kernphysik, Julich). Total and differential cross sections have been obtained covering the energy region root s = (2.35-2.46) GeV, which includes the region of the ABC effect and its associated resonance structure. NoABCeffect, i.e., low-mass enhancement is found in the pi(0)pi(-) -invariant mass spectrum, in agreement with the constraint from Bose statistics that the isovector pion pair can not be in relative s wave. At the upper end of the covered energy region t-channel processes for Roper, Delta(1600) and Delta Delta excitations provide a reasonable description of the data, but at low energies the measured cross sections are much larger than predicted by such processes. Adding a resonance amplitude for the resonance at m = 2.37 GeV with Gamma = 70 MeV and I (J(P)) = 0(3(+)) observed recently in pn -> d pi(0)pi(0) and pn -> d pi(+)pi(-) reactions leads to an agreement with the data also at low energies.
 
Publisher AMER PHYSICAL SOC
 
Date 2014-10-17T06:05:40Z
2014-10-17T06:05:40Z
2013
 
Type Article
 
Identifier PHYSICAL REVIEW C, 88(5)
0556-2813
1089-490X
http://dx.doi.org/10.1103/PhysRevC.88.055208
http://dspace.library.iitb.ac.in/jspui/handle/100/16140
 
Language en