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Further search for the decay K+->pi(+)nu(nu)over-bar

Authors

Adler, S Atiya, MS Chiang, IH Diwan, MV Frank, JS Haggerty, JS Jain, V Kettell, SH Kycia, TF Li, KK Littenberg, LS Ng, C Strand, RC Witzig, C Kazumori, M Komatsubara, TK Kuriki, M Muramatsu, N Otomo, A Sugimoto, S Inagaki, T Kabe, S Kobayashi, M Kuno, Y Sato, T Shinkawa, T Yoshimura, Y Kishi, Y Nakano, T Sasaki, T Ardebili, M Bazarko, AO Convery, MR Ito, MM Marlow, DR McPherson, RA Meyers, PD Shoemaker, FC Smith, AJS Stone, JR Aoki, M Bergbusch, PC Blackmore, EW Bryman, DA Konaka, A Macdonald, JA Mildenberger, J Numao, T Padley, P Poutissou, JM Poutissou, R Redlinger, G Kitching, P Soluk, R

Citation

S. Adler et al., Further search for the decay K+->pi(+)nu(nu)over-bar, PHYS REV L, 84(17), 2000, pp. 3768-3770

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW LETTERS

ISSN journal

00319007 → ACNP

Volume

Issue

Year of publication

2000

Pages

3768 - 3770

Database

ISI

SICI code

0031-9007(20000424)84:17<3768:FSFTDK>2.0.ZU;2-#

Abstract

A search for additional evidence for the rare kaon decay K+ --> pi(+)nu<(nu )over bar> has been made with a new data set comparable in sensitivity to t he previous exposure that produced a single event. No new events were found in the pion momentum region examined, 211 < P < 229 MeV/c. Including a rea nalysis of the original data set, the backgrounds were estimated to contrib ute 0.08 +/- 0.02 events. Based on one observed event, the new branching ra tio is B(K+ --> pi(+)nu<(nu)over bar>) = 1.5(-1.2)(+3.4) x 10(-10).