EVIDENCE FOR LAMBDA-C(+) IN INCLUSIVE PP-](LAMBDA-O-PI+PI+PI-)+CHI AND PP -](K-PI+P) +CHI AT SQUARE-ROOT-S=53 AND 62 GEV

被引：77

作者：

LOCKMAN, W ^{[1
]}

MEYER, T ^{[1
]}

RANDER, J ^{[1
]}

SCHLEIN, P ^{[1
]}

WEBB, R ^{[1
]}

ERHAN, S ^{[1
]}

ZSEMBERY, J ^{[1
]}

机构：

[1] CENS,F-91190 GIF SUR YVETTE,FRANCE

来源：

PHYSICS LETTERS B | 1979年 / 85卷 / 04期

关键词：

D O I：

10.1016/0370-2693(79)91292-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for the charmed baryon, Λc+, has been carried out in inclusively, measured Λ0π±π+π- and K-π±p final states with longitudinal x > 0.75 in an experiment at the CERN intersecting storage rings. An effect with invariant mass near 2.3 GeV is observed in Λ0π+π+π- with cross section times branching ratio Bσ = (2.8±1.0) μb; similar effect is observed in K-π+p with Bσ = (2.3 ± 0.3) μb. The effect is seen only in the positive charge state, in agreement with an interpretation as Λc+. However, it is pointed out that in the same experiment, the non-charmed hyperon state Σ(1385)+ also has a cross section much larger than its corresponding negative charge state Σ(1385)-. © 1979.

引用

页码：443 / 446

页数：4

共 26 条

[1] NEGATIVE PARTICLE PRODUCTION IN FRAGMENTATION REGION AT CERN ISR [J].

ALBROW, MG ;

BAGCHUS, A ;

BARBER, DP ;

BOGAERTS, A ;

BOSNJAKOVIC, B ;

BROOKS, JR ;

CLEGG, AB ;

ERNE, FC ;

GEE, CNP ;

LOCKE, DH ;

LOEBINGER, FK ;

MURPHY, PG ;

RUDGE, A ;

SENS, JC ;

VANDERVE.F .

NUCLEAR PHYSICS B, 1973, B 56 (02) :333-345

[2] SEARCH FOR NARROW RESONANCES IN PROTON-PROTON COLLISIONS AT 53 GEV CENTRE-OF-MASS ENERGY [J].

ALBROW, MG ;

ALPER, B ;

ARMITAGE, J ;

ASTON, D ;

BENZ, P ;

BOBBINK, GJ ;

BOSNJAKOVIC, B ;

CLARK, AG ;

ERNE, FC ;

EVANS, WM ;

GEE, CNP ;

GROVES, ES ;

HOLLOWAY, LE ;

JACKSON, JN ;

JARLSKOG, G ;

JENSEN, H ;

KOOIJMAN, P ;

KORDER, D ;

LOEBINGER, FK ;

MACBETH, AA ;

MCCUBBIN, NA ;

MONTGOMERY, HE ;

MORRIS, JV ;

MURPHY, PG ;

OGREN, H ;

OTT, RJ ;

RADOJICIC, D ;

ROCK, S ;

RUDGE, A ;

SENS, JC ;

SESSOMS, AL ;

SINGH, J ;

STORK, D ;

STROLIN, P ;

TIMMER, J ;

WENZEL, WA .

NUCLEAR PHYSICS B, 1976, 114 (03) :365-379

[3] SEARCH FOR D0-MESON PRODUCTION IN P-P INTERACTIONS AT A CENTER-OF-MASS ENERGY OF 53 GEV [J].

ALDER, JC ;

BLOCK, M ;

BOHM, A ;

CERADINI, F ;

DIBITONTO, D ;

IRION, J ;

JOSEPH, C ;

KERNAN, A ;

LAYTER, J ;

MULLER, F ;

NAROSKA, B ;

NUSSBAUM, M ;

ORKINLECOURTOIS, A ;

PERROUD, JP ;

RUBBIA, C ;

SCHINZEL, D ;

SEEBRUNNER, H ;

SHEN, B ;

STAUDE, A ;

TIRLER, R ;

TRAN, MT ;

VANDALEN, G ;

VOSS, R ;

ZUPANCIC, C .

PHYSICS LETTERS B, 1977, 66 (04) :401-404

[4] OBSERVATION OF AN EXCESS OF NU-E, NUBAR-E EVENTS IN A BEAM DUMP EXPERIMENT AT 400 GEV [J].

ALIBRAN, P ;

ARMENISE, N ;

ARNOLD, R ;

BARTLEY, JH ;

BELLOTTI, E ;

BERTRAND, D ;

BLAES, R ;

BLONDEL, A ;

BLUM, D ;

BOLOGNESE, T ;

BONETTI, S ;

BONNEAUD, G ;

BOUROTTE, J ;

BULLOCK, FW ;

BURMEISTER, H ;

CARNESECCHI, G ;

CAVALLI, D ;

CONFORTO, G ;

DEGRANGE, B ;

DEWIT, M ;

ERRIQUEZ, O ;

ESCOUBES, B ;

FIORINI, E ;

FRODESEN, AG ;

GILLESPIE, J ;

HAGUENAUER, M ;

HEUSSE, P ;

JACQUET, F ;

JONES, TW ;

LUTZ, AM ;

MATTEUZZI, C ;

MORFIN, J ;

MUCIACCIAFOGLI, MT ;

MUSSET, P ;

NATALI, S ;

NGUYENKHAC, U ;

NUZZO, S ;

PASCAUD, C ;

PATTISON, B ;

PATY, M ;

PETITJEAN, P ;

PRICE, M ;

PULLIA, A ;

RIESTER, JL ;

ROGNEBAKKE, A ;

ROLLIER, M ;

ROMANO, F ;

SACTON, J ;

SKJEGGESTAD, O ;

SLEEMAN, J .

PHYSICS LETTERS B, 1978, 74 (1-2) :134-138

[5] LIFETIME OF CHARGED CHARMED PARTICLES 1ST DIRECT OBSERVATION OF A CHARMED BARYON DECAY [J].

ANGELINI, C ;

BAGNAIA, P ;

BARONI, G ;

BARTLEY, JH ;

BERTRANDCOREMANS, G ;

BISI, V ;

BRESLIN, A ;

BURHOP, EHS ;

CARENA, F ;

CASALI, R ;

CIAPETTI, G ;

CONVERSI, M ;

DAVIS, DH ;

DILIBERTO, S ;

FERRER, ML ;

FRANZINETTI, C ;

GAMBA, D ;

GODFREY, L ;

KEANE, D ;

LAMANNA, E ;

MARZARI, A ;

MARZANO, F ;

MONTWILL, A ;

MORGANTI, R ;

NAPPI, A ;

PALAZZICERRINA, C ;

PAZZI, R ;

PETRERA, S ;

PIERAZZINI, GM ;

RICCATI, L ;

ROMANO, G ;

ROMERO, A ;

SACTON, J ;

SANTONICO, R ;

SEVER, R ;

STANNARD, FR ;

TOLUN, P ;

TOVEE, DN ;

VILAIN, P ;

WICKENS, JH ;

WILQUET, G .

PHYSICS LETTERS B, 1979, 84 (01) :150-155

[6] OBSERVATION OF DIFFRACTION EXCITATION IN PP-] (PPI+PI-)+X AT CERN-ISR AND TESTS OF LIMITING FRAGMENTATION [J].

BAKSAY, L ;

BOEHM, A ;

FOETH, H ;

STAUDE, A ;

LOCKMAN, W ;

MEDINNIS, M ;

MEYER, T ;

RANDER, J ;

SCHLEIN, P ;

TRIPPE, T ;

WEBB, R ;

ELLIS, R ;

NAROSKA, B ;

STROLIN, P .

PHYSICS LETTERS B, 1975, B 53 (05) :484-488

[7] EVIDENCE FOR DOUBLE DIFFRACTIVE EXCITATION IN PP-](PPI+PI-) + X AT CERN ISR AND TEST OF FACTORIZATION [J].

BAKSAY, L ;

BOEHM, A ;

FOETH, H ;

STAUDE, A ;

LOCKMAN, W ;

MEDINNIS, M ;

MEYER, T ;

RANDER, J ;

SCHLEIN, P ;

WEBB, R ;

ELLIS, R ;

NAROSKA, B ;

STROLIN, P .

PHYSICS LETTERS B, 1975, B 55 (05) :491-494

[8] MULTIWIRE PROPORTIONAL CHAMBER SPECTROMETER FOR CERN INTERSECTING STORAGE-RINGS [J].

BAKSAY, L ;

BOHM, A ;

FOETH, H ;

STAUDE, A ;

LOCKMAN, W ;

MEYER, T ;

RANDER, J ;

SCHLEIN, P ;

WEBB, R ;

BOZZO, M ;

ELLIS, R ;

NAROSKA, B ;

RUBBIA, C ;

STROLIN, P .

NUCLEAR INSTRUMENTS & METHODS, 1976, 133 (02) :219-229

[9]

BAKSAY L, 1975, PHYS LETT B, V55, P331

[10]

BAKSAY L, 1975, PHYS LETT B, V55, P336

← 1 2 3 →