/*===================================================================*/ /* NRDF D1632 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; 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,2; /* 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,2*P)N; PHQ=DATA'12'; /* '12' The pp mass distribution */ INC-MOM-LAB=2060MEV/C; DET-PARTCL=(P,P); COINC=(P,P); /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; INC-MOM-LAB=2060MEV/C; SYS-ERR=10%'13'; /* '13' 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=P; RSD=N; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; DATA1'14' COUNTS DELTA-COUNTS (MEV/C**2) (ARB) (ARB) 1.959E+03 3.401E+01 +-5.875E+00 1.960E+03 5.917E+01 +-1.261E+00 1.961E+03 4.445E+01 +-5.455E+00 1.962E+03 4.695E+01 +-3.772E+00 1.964E+03 5.531E+01 +-4.199E+00 1.965E+03 5.109E+01 +-3.355E+00 1.966E+03 6.869E+01 +-4.620E+00 1.967E+03 7.664E+01 +-8.392E+00 1.968E+03 7.619E+01 +-2.941E+00 1.969E+03 7.952E+01 +-5.041E+00 1.970E+03 1.101E+02 +-4.200E+00 1.971E+03 9.921E+01 +-3.358E+00 1.972E+03 1.130E+02 +-2.941E+00 1.973E+03 9.791E+01 +-7.978E+00 1.974E+03 1.378E+02 +-7.140E+00 1.975E+03 1.306E+02 +-5.876E+00 1.975E+03 1.478E+02 +-5.458E+00 1.976E+03 1.637E+02 +-7.976E+00 1.977E+03 1.570E+02 +-7.135E+00 1.979E+03 1.855E+02 +-8.405E+00 1.979E+03 1.964E+02 +-9.659E+00 1.980E+03 2.027E+02 +-5.880E+00 1.981E+03 1.964E+02 +-1.007E+01 1.982E+03 1.833E+02 +-8.818E+00 1.983E+03 2.299E+02 +-1.259E+01 1.984E+03 2.500E+02 +-7.133E+00 1.985E+03 2.420E+02 +-8.397E+00 1.987E+03 2.768E+02 +-7.979E+00 1.987E+03 2.609E+02 +-1.133E+01 1.989E+03 2.793E+02 +-1.007E+01 1.990E+03 3.103E+02 +-1.386E+01 1.991E+03 3.053E+02 +-1.259E+01 1.992E+03 3.048E+02 +-1.134E+01 1.993E+03 3.191E+02 +-7.968E+00 1.994E+03 3.396E+02 +-1.512E+01 1.995E+03 3.123E+02 +-1.259E+01 1.997E+03 3.572E+02 +-1.596E+01 1.997E+03 3.924E+02 +-1.552E+01 1.998E+03 3.761E+02 +-1.595E+01 1.999E+03 4.037E+02 +-1.510E+01 1.999E+03 3.819E+02 +-1.973E+01 2.000E+03 4.125E+02 +-1.386E+01 2.002E+03 4.150E+02 +-1.721E+01 2.002E+03 4.037E+02 +-2.056E+01 2.003E+03 4.418E+02 +-1.762E+01 2.004E+03 4.712E+02 +-1.889E+01 2.005E+03 4.741E+02 +-1.930E+01 2.007E+03 4.820E+02 +-1.806E+01 2.008E+03 4.963E+02 +-2.140E+01 2.010E+03 5.403E+02 +-1.637E+01 2.010E+03 5.445E+02 +-3.313E+01 2.012E+03 5.210E+02 +-2.350E+01 2.013E+03 5.465E+02 +-2.057E+01 2.014E+03 5.083E+02 +-2.097E+01 2.015E+03 5.847E+02 +-1.848E+01 2.017E+03 6.027E+02 +-2.729E+01 2.017E+03 6.077E+02 +-2.434E+01 2.018E+03 5.838E+02 +-2.224E+01 2.019E+03 6.173E+02 +-2.056E+01 2.020E+03 5.980E+02 +-1.804E+01 2.021E+03 6.026E+02 +-2.056E+01 2.022E+03 6.076E+02 +-1.301E+01 2.023E+03 6.034E+02 +-2.434E+01 2.024E+03 6.609E+02 +-2.727E+01 2.024E+03 6.617E+02 +-2.223E+01 2.026E+03 6.378E+02 +-2.224E+01 2.026E+03 6.932E+02 +-2.602E+01 2.027E+03 6.466E+02 +-1.469E+01 2.028E+03 6.898E+02 +-2.183E+01 2.030E+03 6.868E+02 +-2.855E+01 2.030E+03 7.095E+02 +-2.602E+01 2.030E+03 6.729E+02 +-2.309E+01 2.032E+03 6.813E+02 +-2.435E+01 2.034E+03 7.022E+02 +-2.268E+01 2.034E+03 6.787E+02 +-2.979E+01 2.035E+03 7.463E+02 +-2.771E+01 2.037E+03 6.862E+02 +-2.771E+01 2.037E+03 7.714E+02 +-2.810E+01 2.038E+03 7.987E+02 +-1.888E+01 2.040E+03 7.332E+02 +-2.391E+01 2.041E+03 7.944E+02 +-2.182E+01 2.042E+03 7.734E+02 +-2.601E+01 2.043E+03 7.767E+02 +-2.307E+01 2.044E+03 7.549E+02 +-2.351E+01 2.045E+03 7.750E+02 +-2.391E+01 2.046E+03 7.481E+02 +-2.812E+01 2.047E+03 7.674E+02 +-2.434E+01 2.048E+03 7.686E+02 +-2.980E+01 2.049E+03 7.686E+02 +-1.847E+01 2.049E+03 8.236E+02 +-2.686E+01 2.051E+03 8.202E+02 +-2.015E+01 2.051E+03 7.505E+02 +-2.518E+01 2.053E+03 8.231E+02 +-2.225E+01 2.053E+03 7.664E+02 +-3.146E+01 2.054E+03 7.773E+02 +-2.560E+01 2.055E+03 8.785E+02 +-3.273E+01 2.056E+03 8.302E+02 +-2.560E+01 2.057E+03 7.743E+02 +-2.602E+01 2.059E+03 8.121E+02 +-2.393E+01 2.060E+03 8.137E+02 +-1.553E+01 2.061E+03 8.620E+02 +-2.980E+01 2.062E+03 7.834E+02 +-2.182E+01 2.063E+03 8.225E+02 +-2.853E+01 2.065E+03 7.649E+02 +-2.686E+01 2.065E+03 8.539E+02 +-2.686E+01 2.066E+03 8.220E+02 +-2.435E+01 2.068E+03 8.236E+02 +-2.644E+01 2.069E+03 8.127E+02 +-1.973E+01 2.069E+03 8.198E+02 +-2.643E+01 2.071E+03 8.517E+02 +-3.106E+01 2.072E+03 8.302E+02 +-2.643E+01 2.071E+03 7.459E+02 +-2.098E+01 2.073E+03 8.760E+02 +-2.644E+01 2.074E+03 8.516E+02 +-3.148E+01 2.075E+03 8.260E+02 +-2.686E+01 2.075E+03 8.092E+02 +-2.560E+01 2.077E+03 8.154E+02 +-2.224E+01 2.077E+03 8.368E+02 +-2.224E+01 2.078E+03 8.288E+02 +-1.972E+01 2.078E+03 8.196E+02 +-2.140E+01 2.080E+03 7.902E+02 +-2.768E+01 2.082E+03 8.015E+02 +-2.267E+01 2.083E+03 8.590E+02 +-2.771E+01 2.084E+03 8.106E+02 +-2.687E+01 2.085E+03 8.543E+02 +-3.063E+01 2.086E+03 8.270E+02 +-2.433E+01 2.087E+03 8.072E+02 +-2.935E+01 2.087E+03 8.106E+02 +-2.306E+01 2.089E+03 7.875E+02 +-2.350E+01 2.090E+03 8.017E+02 +-2.644E+01 2.091E+03 7.601E+02 +-3.356E+01 2.092E+03 8.180E+02 +-2.855E+01 2.092E+03 7.572E+02 +-2.474E+01 2.094E+03 8.394E+02 +-3.693E+01 2.095E+03 7.982E+02 +-2.601E+01 2.096E+03 7.928E+02 +-2.644E+01 2.097E+03 7.352E+02 +-2.435E+01 2.097E+03 8.062E+02 +-2.644E+01 2.098E+03 7.612E+02 +-2.771E+01 2.099E+03 7.717E+02 +-2.393E+01 2.100E+03 7.889E+02 +-3.063E+01 2.101E+03 7.796E+02 +-2.896E+01 2.101E+03 7.448E+02 +-2.475E+01 2.103E+03 7.855E+02 +-2.854E+01 2.103E+03 7.489E+02 +-2.811E+01 2.105E+03 7.552E+02 +-2.225E+01 2.106E+03 7.107E+02 +-2.812E+01 2.107E+03 7.405E+02 +-2.980E+01 2.109E+03 7.295E+02 +-3.233E+01 2.109E+03 7.119E+02 +-2.770E+01 2.111E+03 7.425E+02 +-3.064E+01 2.112E+03 6.551E+02 +-2.394E+01 2.113E+03 6.937E+02 +-3.399E+01 2.114E+03 6.937E+02 +-2.309E+01 2.114E+03 6.866E+02 +-2.391E+01 2.115E+03 6.681E+02 +-2.895E+01 2.118E+03 6.395E+02 +-2.435E+01 2.118E+03 6.672E+02 +-2.896E+01 2.119E+03 6.953E+02 +-3.189E+01 2.120E+03 6.550E+02 +-2.183E+01 2.121E+03 6.176E+02 +-2.182E+01 2.121E+03 6.608E+02 +-2.979E+01 2.122E+03 6.218E+02 +-2.392E+01 2.123E+03 6.175E+02 +-2.475E+01 2.124E+03 5.928E+02 +-2.057E+01 2.125E+03 6.297E+02 +-2.644E+01 2.125E+03 6.276E+02 +-2.349E+01 2.127E+03 5.918E+02 +-2.392E+01 2.128E+03 5.969E+02 +-2.854E+01 2.129E+03 5.826E+02 +-2.646E+01 2.130E+03 5.997E+02 +-2.478E+01 2.131E+03 5.531E+02 +-2.517E+01 2.132E+03 5.745E+02 +-2.014E+01 2.134E+03 5.812E+02 +-2.183E+01 2.134E+03 5.636E+02 +-2.180E+01 2.136E+03 5.320E+02 +-2.604E+01 2.137E+03 5.312E+02 +-2.097E+01 2.138E+03 5.232E+02 +-2.181E+01 2.139E+03 5.483E+02 +-3.106E+01 2.140E+03 5.311E+02 +-2.895E+01 2.142E+03 5.080E+02 +-1.972E+01 2.142E+03 4.773E+02 +-1.889E+01 2.143E+03 4.870E+02 +-2.100E+01 2.144E+03 4.933E+02 +-2.433E+01 2.145E+03 4.697E+02 +-2.224E+01 2.146E+03 4.428E+02 +-1.804E+01 2.146E+03 5.238E+02 +-2.686E+01 2.147E+03 4.600E+02 +-1.805E+01 2.148E+03 4.520E+02 +-2.056E+01 2.149E+03 4.474E+02 +-1.342E+01 2.149E+03 4.797E+02 +-1.636E+01 2.151E+03 4.587E+02 +-1.680E+01 2.151E+03 4.314E+02 +-2.099E+01 2.153E+03 4.355E+02 +-1.386E+01 2.154E+03 3.944E+02 +-1.679E+01 2.155E+03 3.675E+02 +-1.846E+01 2.157E+03 3.444E+02 +-2.058E+01 2.158E+03 3.532E+02 +-1.930E+01 \END; /*===================================================================*/ |