STUDY OF THE REACTION PBARP-]LAMBDA-BAR-LAMBDA AT 1.546 AND 1.695 GEV/C

被引：91

作者：

BARNES, PD

DIEBOLD, G

FRANKLIN, G

MAHER, C

QUINN, B

SEYDOUX, J

KILIAN, K

BESOLD, R

EYRICH, W

VONFRANKENBERG, R

HOFMANN, A

MALZ, D

STINZING, F

WOLDT, P

BIRIEN, P

DUTTY, W

FRANZ, J

HAMANN, N

ROSSLE, E

SCHLEDERMANN, H

SCHMITT, H

URBAN, HJ

EISENSTEIN, RA

HERTZOG, D

OELERT, W

SEHL, G

BONNER, BE

ERICSSON, G

JOHANSSON, T

OHLSSON, S

BREUNLICH, WH

PAWLEK, P

机构：

[1] CERN, CH-1211 GENEVA 23, SWITZERLAND

[2] UNIV ERLANGEN NURNBERG, W-8520 ERLANGEN, GERMANY

[3] UNIV FREIBURG, W-7800 FREIBURG, GERMANY

[4] UNIV ILLINOIS, CHAMPAIGN, IL 61820 USA

[5] FORSCHUNGSZENTRUM JULICH, INST KERNPHYS, W-5170 JULICH 1, GERMANY

[6] UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA

[7] UNIV UPPSALA, S-75121 UPPSALA, SWEDEN

[8] AUSTRIAN ACAD SCI, INST MITTELENERGIEPHYS, A-1090 VIENNA, AUSTRIA

来源：

NUCLEAR PHYSICS A | 1991年 / 526卷 / 3-4期

基金：

美国国家科学基金会; 美国能源部;

关键词：

PBARP-]LAMBDA-BAR-LAMBDA; PLAB=1.546; 1.695; GEV/C; MEASURED SIGMA; SIGMA(THETA); POLARIZATION; AND SPIN CORRELATION;

D O I：

10.1016/0375-9474(91)90434-8

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The PS185 experiment at the CERN Low Energy Antiproton Ring (LEAR) has studied the reaction pBARp --> LAMDA-BAR-LAMDA at several momenta. In this paper results from two runs with high statistics at 1.546 GeV/c and 1.695 GeV/c are described. Based on 4063 and 11362 analysed events, respectively, differential and integrated cross sections, polarizations and spin correlations are presented. The singlet fraction, extracted from the spin correlations, is consistent with zero at both momenta, showing that the LAMDA-BAR-LAMDA pairs are produced in a pure triplet state. A comparison of the decay asymmetry parameters of LAMDA and LAMDA-BAR reduces the upper limits for the violation of the CP invariance for this system.

引用

页码：575 / 601

页数：27

共 51 条

[1] STUDY OF KDEGREES A AND KDEGREES SIGMA DEGREES FINAL STATES FROM PI P INTERACTIONS AT 3.9 GEV/C [J].

ABRAMOVICH, M ;

BLUMENFELD, H ;

CHALOUPKA, V ;

CHUNG, SU ;

DIAZ, J ;

MONTANET, L ;

PERNEGR, J ;

REUCROFT, S ;

RUBIO, J ;

SADOULET, B .

NUCLEAR PHYSICS B, 1971, B 27 (03) :477-+

[2]

ALBERG MA, 1990, NUCL PHYS A, V508, pE323

[3]

ALBERG MA, 1987, 4TH P LEAR WORKSH VI, P361

[4] STUDY OF REACTIONS PBARP-]LAMBDABARLAMBDA, LAMBDA BAR SIGMA0 OR SIGMA0BARLAMBDA, SIGMA+BARSIGMA+ AT 3.6 GEV-C [J].

ATHERTON, HW ;

FRENCH, BR ;

MOEBES, JP ;

QUERCIGH, E .

NUCLEAR PHYSICS B, 1974, 69 (01) :1-14

[5] REACTIONS PBARP-]DELTABARDELTA AT 2.5 GEV/C [J].

BADIER, J ;

BONNET, A ;

BRIANDET, P ;

SADOULET, B .

PHYSICS LETTERS B, 1967, B 25 (02) :152-&

[6] CP INVARIANCE IN THE REACTION PBAR-P-]LAMBDABAR-LAMBDA-]PBAR-PI+P-PI- AT 1.546 GEV/C [J].

BARNES, PD ;

BIRIEN, P ;

BONNER, BE ;

BREUNLICH, WH ;

DIEBOLD, G ;

DUTTY, W ;

EISENSTEIN, RA ;

ERICSSON, G ;

EYRICH, W ;

VONFRANKENBERG, R ;

FRANKLIN, G ;

FRANZ, J ;

HAMANN, N ;

HERTZOG, D ;

HOFMANN, A ;

JOHANSSON, T ;

KILIAN, K ;

MAHER, C ;

OELERT, W ;

OHLSSON, S ;

ORTNER, HW ;

PAWLEK, P ;

QUINN, B ;

ROSSLE, E ;

SCHLEDERMANN, H ;

SCHMITT, H ;

SEYDOUX, J ;

STINZING, F ;

SZYMANSKI, J .

PHYSICS LETTERS B, 1987, 199 (01) :147-150

[7] THRESHOLD MEASUREMENT OF THE REACTION PBARP-]LAMBDABAR-LAMBDA AT LEAR [J].

BARNES, PD ;

BESOLD, R ;

BIRIEN, P ;

BONNER, BE ;

BREUNLICH, WH ;

DIEBOLD, G ;

DUTTY, W ;

EISENSTEIN, RA ;

ERICSSON, G ;

EYRICH, W ;

VONFRANKENBERG, R ;

FRANKLIN, G ;

FRANZ, J ;

HAMANN, N ;

HERTZOG, D ;

HOFMANN, A ;

JOHANSSON, T ;

KILIAN, K ;

MAHER, C ;

OELERT, W ;

OHLSSON, S ;

ORTNER, HW ;

PAWLEK, P ;

QUINN, B ;

ROSSLE, E ;

SCHLEDERMANN, H ;

SCHMITT, H ;

SEYDOUX, J ;

WOLDT, P .

PHYSICS LETTERS B, 1989, 229 (04) :432-438

[8] STUDY OF THE REACTION PBARP-]LAMBDABARLAMBDA NEAR THRESHOLD [J].

BARNES, PD ;

BESOLD, R ;

BIRIEN, P ;

BONNER, B ;

BREUNLICH, WH ;

DUTTY, W ;

EISENSTEIN, RA ;

ERICSSON, G ;

EYRICH, W ;

VONFRANKENBERG, R ;

FRANKLIN, G ;

FRANZ, J ;

HAMANN, N ;

HERTZOG, D ;

HOFMANN, A ;

JOHANSSON, T ;

KILIAN, K ;

MAHER, CJ ;

OHLSSON, S ;

ORTNER, H ;

PAWLEK, P ;

QUINN, B ;

ROSSLE, E ;

SCHLEDERMANN, H ;

SCHMITT, H ;

WHARTON, W .

PHYSICS LETTERS B, 1987, 189 (1-2) :249-253

[9] MEASUREMENT OF THE REACTION PBARP-]LAMBDA-BAR-SIGMA-0+CC AT 1.695 GEV/C [J].

BARNES, PD ;

BIRIEN, P ;

BONNER, BE ;

BREUNLICH, WH ;

DIEBOLD, G ;

DUTTY, W ;

EISENSTEIN, RA ;

ERICSSON, G ;

EYRICH, W ;

VONFRANKENBERG, R ;

FRANKLIN, G ;

FRANZ, J ;

HAMANN, N ;

HERTZOG, D ;

HOFMANN, A ;

JOHANSSON, T ;

KILIAN, K ;

MAHER, C ;

MALZ, D ;

OELERT, W ;

OHLSSON, S ;

PAWLEK, P ;

QUINN, B ;

ROSSLE, E ;

SCHLEDERMANN, H ;

SCHMITT, H ;

SEYDOUX, J ;

STINZING, F .

PHYSICS LETTERS B, 1990, 246 (1-2) :273-277

[10] SET OF EFFICIENT ESTIMATORS FOR POLARIZATION MEASUREMENTS [J].

BESSET, D ;

FAVIER, B ;

GREENIAUS, LG ;

HESS, R ;

LECHANOINE, C ;

RAPIN, D ;

WERREN, DW .

NUCLEAR INSTRUMENTS & METHODS, 1979, 166 (03) :515-520

← 1 2 3 4 5 6 →