ENTRY E1632 20040311 0000E163200000001 SUBENT E1632001 20040311 0000E163200100001 BIB 14 43 E163200100002 TITLE Search for proton-proton dibaryon resonances in the dp E163200100003 -> (pp)n reaction E163200100004 AUTHOR (H.Kawai, M.Kobayashi, J.Haba, T.Homma, K.Miyake, E163200100005 T.S.Nakamura, N.Sasao, Y.Sugimoto) E163200100006 INSTITUTE (2JPNKTO)Department of Physics E163200100007 REFERENCE (J,NP/A,481,(4),806,19880516) E163200100008 INC-SOURCE Beam intensity: A typical intensity of the deuteron E163200100009 beam was about 2-3E+5 particles per 400-msec-long E163200100010 machine spill. E163200100011 INC-SPECT EN-RSL: The momentum resolution of about 0.5 percents E163200100012 was achieved. E163200100013 SAMPLE - Chemical-form of target is element. E163200100014 - Physical-form of target is liquid. E163200100015 - Target-thickness: The liquid hydrogen target with a E163200100016 cylindrical shape of 300 mm long and 50 mm in E163200100017 diameter was placed. E163200100018 METHOD (TOF)The timing resolution of the ToF system was about E163200100019 200 psec [T.Tanimori et al., Nucl. Instr. Meth. E163200100020 216(1983)57]. E163200100021 FACILITY (SYNCH,2JPNLEP)A deuteron beam was separated from a E163200100022 secondary beam through an E163200100023 intermediate-energy beam line (K2) of E163200100024 12 GeV Proton Synchrotron. E163200100025 DETECTOR Detector resolution is about 2.2%.(about 2.4% (rms) E163200100026 for left arm and about 2.0% (rms) for right arm.) E163200100027 Drift chamber E163200100028 (MAGSP)C-type spectrometer magnet (TELAS) E163200100029 (SCIN)Used as trigger counter and ToF counter E163200100030 [T.Tanimori et al., Nucl. Instr. Meth. E163200100031 216(1983)57] E163200100032 (MWPC) E163200100033 ERR-ANALYS (ERR-1)Systematic error on the normalization E163200100034 ADD-RES Subentry 003:1-H-1(D,2P)0-NN-1 E163200100035 The pp mass distribution E163200100036 See NRDF D1632 DATA,2 for detail. E163200100037 Subentry 004:1-H-1(D,2P)0-NN-1 E163200100038 The pp mass distribution E163200100039 See NRDF D1632 DATA,3 for detail. E163200100040 COMMENT To demonstrate the validity of the normalization, d+p E163200100041 elastic cross section evaliated was compared with the E163200100042 previous measurement by Booth et al [N.E.Booth et al., E163200100043 Phys. Rev. D4(1971)1261]. E163200100044 HISTORY (20031023C) E163200100045 ENDBIB 43 0 E163200100046 COMMON 2 3 E163200100047 EN-RSL ERR-1 E163200100048 PER-CENT PER-CENT E163200100049 0.5 10.0 E163200100050 ENDCOMMON 3 0 E163200100051 ENDSUBENT 50 0 E163200199999 SUBENT E1632002 20040311 0000E163200200001 BIB 5 10 E163200200002 REL-REF (A,,N.E.Booth+,J,PR/D,4,1261,1971) E163200200003 Two measurements agree fairly well with each other, E163200200004 although our data points are systematically large for E163200200005 cos(theta)>-0.5, where theta denotes the scattering E163200200006 angle in the center-of-mass (c.m.) system. E163200200007 REACTION (1-H-1(D,EL)1-H-1,,DA) E163200200008 PART-DET (P) E163200200009 (D) E163200200010 METHOD (COINC)Detect proton and deuteron in coincidence. E163200200011 STATUS (CURVE)Data scanned from Fig.5, p813 in reference E163200200012 ENDBIB 10 0 E163200200013 COMMON 1 3 E163200200014 MOM E163200200015 MEV/C E163200200016 2060.0 E163200200017 ENDCOMMON 3 0 E163200200018 DATA 3 24 E163200200019 COS-CM DATA-CM DATA-ERR E163200200020 NO-DIM MU-B/SR MU-B/SR E163200200021 -8.611E-01 8.080E+01 6.041E+00 E163200200022 -8.106E-01 6.970E+01 6.483E+00 E163200200023 -7.650E-01 5.659E+01 4.666E+00 E163200200024 -7.091E-01 4.521E+01 1.658E+00 E163200200025 -6.490E-01 3.739E+01 9.828E-01 E163200200026 -6.034E-01 3.444E+01 E163200200027 -5.570E-01 3.489E+01 E163200200028 -5.115E-01 3.668E+01 9.922E-01 E163200200029 -4.594E-01 3.776E+01 9.085E-01 E163200200030 -4.019E-01 4.021E+01 1.188E+00 E163200200031 -3.491E-01 4.117E+01 1.146E+00 E163200200032 -2.988E-01 4.461E+01 1.145E+00 E163200200033 -2.610E-01 4.773E+01 1.145E+00 E163200200034 -2.109E-01 4.896E+01 1.303E+00 E163200200035 -1.530E-01 5.398E+01 1.542E+00 E163200200036 -9.838E-02 5.604E+01 1.383E+00 E163200200037 -4.526E-02 5.787E+01 1.030E+00 E163200200038 -5.108E-04 6.112E+01 1.226E+00 E163200200039 4.059E-02 6.387E+01 1.779E+00 E163200200040 8.952E-02 6.393E+01 1.425E+00 E163200200041 1.477E-01 6.974E+01 2.218E+00 E163200200042 2.039E-01 7.215E+01 2.409E+00 E163200200043 2.532E-01 7.659E+01 2.491E+00 E163200200044 2.916E-01 7.934E+01 4.308E+00 E163200200045 ENDDATA 26 0 E163200200046 ENDSUBENT 45 0 E163200299999 NOSUBENT E1632003 20040311 0000E163200300001 NOSUBENT E1632004 20040311 0000E163200400001 ENDENTRY 4 0 E163299999999