/*===================================================================*/ /* NRDF D1632 Data No.1 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,1; D#=D1632; TITLE=/Search for proton-proton dibaryon resonances in the dp -> (pp)n reaction/; PURPOSE=/The present experiment has been performed to search for ppdibaryon resonances in the dp->ppn reaction/; ATH=(H.KAWAI'1', M.KOBAYASHI'1', J.HABA'1', T.HOMMA'1', K.MIYAKE'1', T.S.NAKAMURA'1', N.SASAO'1', Y.SUGIMOTO'1'); INST-ATH=(2JPNKTO'1'); /* '1' Department of Physics */ REF=NP/A; VLP=481(1988)806; RCTS=(P(D,D)P, P(D,2*P)N); PHQS=(ANGL-DSTRN, DATA'2'); /* '2' The pp mass distribution */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,1; /* 2003-10-23 : Compiled */ CHM=ELM; PHYS-FORM=LIQD; THK-TGT=XMG/CM**2'3'; /* '3' The liquid hydrogen target with a cylindrical shape of 300 mm long and 50 mm in diameter was placed. */ POL-TGT=0%; ALGN-TGT=0%; ACC=SYN'4'; /* '4' A deuteron beam was separated from a secondary beam through an intermediate-energy beam line (K2) of 12 GeV Proton Synchrotron. */ INST-ACC=2JPNKEK; ERS-PRJ=[0.5%'5'; /* '5' The momentum resolution of about 0.5 percents was achieved. BEAM-INTNSTY=XPPS'6'; /* '6' A typical intensity of the deuteron beam was about 2-3E+5 particles per 400-msec-long machine spill. */ POL-PRJ=0%; ANT-COINC=NO; DET-SYS=(MAG'7',SCT'8',MWPC,X'9'); /* '7' C-type spectrometer magnet (TELAS) */ /* '8' Used as trigger counter and ToF counter [T.Tanimori et al., Nucl. Instr. Meth. 216(1983)57] */ /* '9' Drift chamber */ ERS-DET=[2.2%'10'; /* '10' about 2.4% (rms) for left arm and about 2.0% (rms) for right arm. */ /* Experimental Method: - Time-of-flight (The timing resolution of the ToF system was about 200 psec [T.Tanimori et al., Nucl. Instr. Meth. 216(1983)57].) RCT=P(D,D)P; RTY=ELA-SCATT; PHQ=ANGL-DSTRN; INC-MOM-LAB=2060MEV/C; DET-PARTCL=(P,D); COINC=(P,D); /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,1; INC-MOM-LAB=2060MEV/C; SYS-ERR=10%'11'; /* '11' Systematic error on the normalization */ NORM=/ To demonstrate the validity of the normalization, d+p elastic cross section evaliated was compared with the previous measurement by Booth et al [N.E.Booth et al., Phys. Rev. D4(1971)1261]. /; EMT-1=P; EMT-2=D; RSD=P; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; COS-CM DSIGMA/DOMEGA DELTA-DSIGMA/DOMEGA (NODIM) (UB/SR) (UB/SR) -8.611E-01 8.080E+01 +-6.041E+00 -8.106E-01 6.970E+01 +-6.483E+00 -7.650E-01 5.659E+01 +-4.666E+00 -7.091E-01 4.521E+01 +-1.658E+00 -6.490E-01 3.739E+01 +-9.828E-01 -6.034E-01 3.444E+01 +-NEGLIGIBLE -5.570E-01 3.489E+01 +-NEGLIGIBLE -5.115E-01 3.668E+01 +-9.922E-01 -4.594E-01 3.776E+01 +-9.085E-01 -4.019E-01 4.021E+01 +-1.188E+00 -3.491E-01 4.117E+01 +-1.146E+00 -2.988E-01 4.461E+01 +-1.145E+00 -2.610E-01 4.773E+01 +-1.145E+00 -2.109E-01 4.896E+01 +-1.303E+00 -1.530E-01 5.398E+01 +-1.542E+00 -9.838E-02 5.604E+01 +-1.383E+00 -4.526E-02 5.787E+01 +-1.030E+00 -5.108E-04 6.112E+01 +-1.226E+00 4.059E-02 6.387E+01 +-1.779E+00 8.952E-02 6.393E+01 +-1.425E+00 1.477E-01 6.974E+01 +-2.218E+00 2.039E-01 7.215E+01 +-2.409E+00 2.532E-01 7.659E+01 +-2.491E+00 2.916E-01 7.934E+01 +-4.308E+00 \END; /*===================================================================*/ |