DETERMINATION OF THE RELATIVE BRANCHING RATIOS FOR PPBAR-]PI+PI- AND PPBAR-]K+K-

被引：23

作者：

ADLER, R

ANGELOPOULOS, A

APOSTOLAKIS, A

ASLANIDES, E

BACKENSTOSS, G

BEE, CP

BENNET, J

BLOCH, P

BULA, C

BURGUN, C

CARLSON, P

CARVALHO, J

CHARDALAS, M

CHARALAMBOUS, S

COBBAERT, H

DEDOUSSIS, S

DEJARDIN, M

DERRE, J

DODGSON, M

DOUSSE, JC

DUCLOS, J

EALET, A

ECKART, B

FARAVEL, L

FASSNACHT, P

FAURE, JL

FELDER, C

FERREIRA-MARQUES, R

FETSCHER, W

FIDECARO, M

FILIPCIC, A

FRANCIS, D

FRY, JR

FUGLESANG, C

GABATHULER, E

GAMET, R

GARRETA, D

GERALIS, T

GERBER, HJ

GO, A

GUMPLINGER, P

GUYOT, C

HARRISON, PF

HAYMAN, PJ

HEYES, WG

HOLLANDER, RW

JOHNER, HU

JON-AND, K

JANSSON, K

KEREK, A

机构：

[1] University of Basle, Basle

[2] University of Athens, Athens

[3] CERN

[4] CPPM, CNRS/IN2P3

[5] University of Liverpool, Liverpool

[6] Paul-Scherrer-Institut (PSI)

[7] DPhPe, CEN Saclay

[8] MSI

[9] LIP, P-1000 Lisbon, Portugal and University of Coimbra, Coimbra

[10] University of Thessaloniki, Thessaloniki

[11] University of Fribourg, Fribourg

[12] ETH-IMP

[13] Boston University, Boston

[14] Technical University of Delft, Delft

[15] Demokritos INP

[16] University of Ioannina

[17] CSNSM, CNRS/IN2P3

来源：

PHYSICS LETTERS B | 1991年 / 267卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(91)90541-W

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The ratio of the branching fractions for ppBAR --> K+K- and ppBAR --> pi+-pi- was determined with the CPLEAR detector, by stopping antiprotons in a gaseous hydrogen target at 15 bar pressure. It was found to be BR(K+K-)/BR(pi+-pi-) = 0.205 +/- 0.016. The fraction of P-wave annihilation at rest at this target density was deduced to be (38 +/- 9)%.

引用

页码：154 / 158

页数：5

共 10 条

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