/*===================================================================*/ /* NRDF D1610 Data No.4 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,4; D#=D1610; TITLE=/ Lambda hyperon production at backward angles in the reaction 6Li(pi-,Lambda)X at 4GeV/c /; PURPOSE=/ To measure invariant cross sections and polarizations of Lambda hyperons /; ATH=(K.TOMIZAWA'1', I.ARAI'1', H.KITAYAMA'1', N.KATO'1', Y.NAGASAKA'1', M.TANAKA'1', K.YAGI'1', J.CHIBA'2', T.KOBAYASHI'2', A.MANABE'2', T.NAGAE'3', M.SEKIMOTO'3', V.PANTUEV'4'); INST-ATH=(2JPNTSU'1', 2JPNKEK'2', 2JPNINS'3', 4RUSJIA'4'); /* '1' Institute of Physics */ REF=PL/B; VLP=328(1994)264; RCTS=6LI(PIN,LAMDA)X; PHQS=(DATA'5', ENGY-SPEC'6', ANGL-DSTRN, POL); /* '5' Invariant-mass spectra of a (proton,pi-) pair */ /* '6' Invariant cross sections */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,4; /* 2003-08-13 : Converted, Am + On. Data converted to EXFOR E1610 /* 2005-11-03 : Converted, On. Converted from EXFOR E1610 */ RTY=INCL; ENR=93%; CHM=ELM; PHYS-FORM=SLD; THK-TGT=XMG/CM**2'7'; /* '7' 36 mm thick and 32 mm in diameter */ ACC=SYN'8'; /* '8' pi2 beam line of 12 GeV proton synchrotron (12GeV PS) */ INST-ACC=2JPNKEK; INC-MOM-LAB=4GEV/C; ION-SOURCE=/ Spallation /; DET-PARTCL=(PIN,P); COINC=(P,PIN); ANT-COINC=NO; DET-SYS=(X'9',SCT'10',X'11'); /* '9' Cylindrical drift chamber (CDC) for measuring the momentum and trajectory of the outgoing particles with a momentum resolution of Delta P/P is about 10%. */ /* '10' Cylindrical hodoscope (CDH) which consists of 24 plastic scintillator counters used to measure the time-of-flight of the outgoing particle */ /* '11' Cylindrical drift chamber (VC) used to detect a vertex point by measuring the trajectories of the Lambda hyperon's decay products (proton and pi-). */ /* 2006-12-19 : Altered, At. Re-digitized */ RCT=6LI(PIN,LAMDA)X; PHQ=ENGY-SPEC'23'; /* '23' Invariant cross sections */ ANL=X'24'; /* '24' Quark-parton model [G.Berlad et al., Phys. Rev. D22(1980)1547]. */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,4; INC-MOM-LAB=4GEV/C; THTL=90[100DEG; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; ENGY-EMT'25' DATA1'26' DELTA-DATA1'26' (MEV) (UNIT1) (UNIT1) 3.473E+01 1.008E+00 +-NEGLIGIBLE 8.561E+01 2.727E-01 +-NEGLIGIBLE 1.340E+02 4.680E-02 +-2.635E-02 \END; /*===================================================================*/ |