/*===================================================================*/ /* NRDF D1733 Data No.3 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,3; D#=D1733; TITLE=/ Double-pion production induced by deutron-proton collisions in the incident deutron momentum range 2.1-3.8 GeV/c /; PURPOSE=/ The purpose of this experiment is (1) to extend the analysis of d-p interactions to obtain the d-p double-pion production cross sections, and from them deduce the p-p and n-p double-pion production cross sections, (2) to analyze the N-N double-pion production data in terms of various production mechanisms such as N-N double-pion production with one nucleon in the deuteron and the other as the spectator nucleon, and two sequential N-N single-pion production reactions involving all two nucleons in the deuteron, and (3) to analyze the d-p double-pion production reactions as the sum of the N-N double-pion production reactions and two sequential N-N single-pion production reactions. /; ATH=(T.TSUBOYAMA'1', F.SAI'1', N.KATAYAMA'1', T.KISHIDA'1', S.S.YAMAMOTO'1'); INST-ATH=(2JPNTOK'1'); /* '1' Department of Physics */ REF=PR/C; VLP=62(2000)034001; RCTS=(P(D,PIN,PIP,N,P)P, P(D,PIN,PI0,P,P)P, P(D,PIN,PIP,P)D, P(D,PIN,PIP,D)P); PHQS=(TOT-XSECTN, MOM-DSTRN'2', MOM-DSTRN'3', MOM-DSTRN'4', ENGY-SPEC'5'); /* '2' Momentum distributions of the slowest proton in the deuteron rest frame */ /* '3' Momentum distributions of the slowest neutron in the deuteron rest frame */ /* '4' Momentum distributions of proton in the deuteron rest frame /* '5' Invariant mass distribution among N-pi-pi */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,3; /* 2002-02-03 : Compiled */ CHM=ELM; PHYS-FORM=LIQD'6'; /* '6' KEK 1m bubble chamber filled with liquid hydrogen */ BAC=X; POL-TGT=0%; ALGN-TGT=0%; ACC=SYN; INST-ACC=2JPNKEK; ERS-PRJ=1%'7'; /* '7' See [N.Katayama et al., NP/A438(1985)685] */ POL-PRJ=0%; COINC=NO; ANT-COINC=NO; DET-SYS=(BUBBLC,TOF'8'); /* '8' See [N.Katayama et al., NP/A438(1985)685] */ /* Experimental Method: - Time-of-flight (See [N.Katayama et al., NP/A438(1985)685]) RCT=P(D,PIN,PIP,P)D; PHQ=TOT-XSECTN; INC-MOM-LAB=(2.08GEV/C, 2.28GEV/C, 2.49GEV/C, 2.68GEV/C, 2.88GEV/C, 2.96GEV/C, 3.18GEV/C, 3.38GEV/C, 3.57GEV/C, 3.79GEV/C); DET-PARTCL=(PIP,PIN,D,P); /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,3; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB SIGMA DELTA-SIGMA (GEV/C) (MB) (MB) 2.68 0.03 +-0.01 2.88 0.07 +-0.01 2.96 0.10 +-0.02 3.18 0.17 +-0.02 3.38 0.25 +-0.03 3.57 0.41 +-0.04 3.79 0.49 +-0.04 \END; /*===================================================================*/ |