IMPROVED SENSITIVITY IN A SEARCH FOR THE RARE DECAY K(L)(0)-]E-(E)

Authors
ARISAKA K AUERBACH LB AXELROD S BELZ J BIERY KA BUCHHOLZ P CHAPMAN MD COUSINS RD DIWAN MV ECKHAUSE M GINKEL JF GUSS C HANCOCK AD HEINSON AP HIGHLAND VL HOFFMANN GW HORVATH J IRWIN GM JOYCE D KAARSBERG T KANE JR KENNEY CJ KETTELL SH KINNISON WW KNIBBE P KONIGSBERG J KUANG Y LANG K LEE DM MARGULIES J MATHIAZHAGAN C MCFARLANE WK MCKEE RJ MELESE P MILNER EC MOLZON WR OUIMETTE DA RILEY PJ RITCHIE JL RUBIN P SANDERS GH SCHWARTZ AJ SIVERTZ M SLATER WE URHEIM J VULCAN WF WAGNER DL WELSH RE WHYLEY RJ WINTER RG WITKOWSKI MT WOJCICKI SG YAMASHITA A ZIOCK HJ
Citation
K. Arisaka et al., IMPROVED SENSITIVITY IN A SEARCH FOR THE RARE DECAY K(L)(0)-]E-(E), Physical review letters, 71(24), 1993, pp. 3910-3913
Citations number
20
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
24
Year of publication
1993
Pages
3910 - 3913
Database
ISI
SICI code
0031-9007(1993)71:24<3910:ISIASF>2.0.ZU;2-U
Abstract
In a search for the decay K(L)0 --> e+e-, no candidates have been obse rved. We determine the sensitivity from the detected number of CP-viol ating K(L)0 --> pi+pi- decays and place a 90% confidence level upper l imit on the branching ratio of B(K(L)0 --> e+e-, \M(K) - M(ee)\; < 6 M eV/c2) less-than-or-equal-to 4.1 x 10(-11). This result is a significa nt improvement over previous measurements, although still above the st andard model prediction of 3 x 10(-12).