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Direct observation of the decay of beauty particles into charm particles

Abstract

The associated production of a pair of beauty particles B/sup -/ and anti B/sup 0/ by a 350 GeV ..pi../sup -/ interaction has been observed in an emulsion target inserted in an array of silicon microstrip detectors. Both beauty particles decay into charm particles, both of which are also observed to decay in the emulsion. Two negative muons were identified and their momenta measured in a large muon spectrometer. One muon has a psub(T) of 1.9 GeV/c and is associated with a beauty particle decay. The other, with a psub(T) of 0.45 GeV/c is associated with a charm particle decay. The flight times of the two beauty particles are respectively (0.8 +- 0.1).10/sup -13/s and (5sub(-1)/sup +2/).10/sup -13/s. Alternative interpretations of this event have negligible probability.
Publication Date:
Aug 08, 1985
Product Type:
Journal Article
Reference Number:
AIX-16-073413; EDB-85-178549
Resource Relation:
Journal Name: Phys. Lett. B; (Netherlands); Journal Volume: 158:2
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B MESONS; SEMILEPTONIC DECAY; PION MINUS REACTIONS; INCLUSIVE INTERACTIONS; D MESONS; EXPERIMENTAL DATA; GEV RANGE 100-1000; LIFETIME; MUONS MINUS; NUCLEAR EMULSIONS; PAIR PRODUCTION; RELATIVISTIC RANGE; TRANSVERSE MOMENTUM; BOSONS; CHARGED-PARTICLE REACTIONS; CHARM PARTICLES; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON REACTIONS; HADRONS; INFORMATION; INTERACTIONS; LEPTONS; LINEAR MOMENTUM; MESON REACTIONS; MESONS; MUONS; NUCLEAR REACTIONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PION REACTIONS; PSEUDOSCALAR MESONS; WEAK PARTICLE DECAY; 645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties
OSTI ID:
5088521
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PYLBA
Submitting Site:
HEDB
Size:
Pages: 186-192
Announcement Date:
Oct 01, 1985

Citation Formats

Albanese, J P, Alpe, V, Aoki, S, Arnold, R, Baroni, G, Barth, M, Bartley, J H, Bertrand, D, Bertrand-Coremans, G, Bisi, V, Aichi Women's Coll, Nisshin-Cho, Bari Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Bari (Italy), Birkbeck Coll, London, Interuniversity Inst. for High Energies, Brussels (Belgium), European Organization for Nuclear Research, Geneva (Switzerland), University Coll., Dublin (Ireland), Gifu Univ. (Japan). Faculty of Education, University Coll., London (UK), Nagoya Univ. (Japan). Dept. of Physics, Nagoya Inst. of Tech. (Japan), Rome Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Rome (Italy), Toho Univ., Funabashi, Chiba (Japan). Faculty of Science, Istituto Nazionale di Fisica Nucleare, Turin (Italy), Turin Univ. (Italy). Ist. di Fisica, Utsunomiya Univ. (Japan). Faculty of Education, and Yokohama National Univ. (Japan). Faculty of Education. Direct observation of the decay of beauty particles into charm particles. Netherlands: N. p., 1985. Web. doi:10.1016/0370-2693(85)91389-9.
Albanese, J P, Alpe, V, Aoki, S, Arnold, R, Baroni, G, Barth, M, Bartley, J H, Bertrand, D, Bertrand-Coremans, G, Bisi, V, Aichi Women's Coll, Nisshin-Cho, Bari Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Bari (Italy), Birkbeck Coll, London, Interuniversity Inst. for High Energies, Brussels (Belgium), European Organization for Nuclear Research, Geneva (Switzerland), University Coll., Dublin (Ireland), Gifu Univ. (Japan). Faculty of Education, University Coll., London (UK), Nagoya Univ. (Japan). Dept. of Physics, Nagoya Inst. of Tech. (Japan), Rome Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Rome (Italy), Toho Univ., Funabashi, Chiba (Japan). Faculty of Science, Istituto Nazionale di Fisica Nucleare, Turin (Italy), Turin Univ. (Italy). Ist. di Fisica, Utsunomiya Univ. (Japan). Faculty of Education, & Yokohama National Univ. (Japan). Faculty of Education. Direct observation of the decay of beauty particles into charm particles. Netherlands. https://doi.org/10.1016/0370-2693(85)91389-9
Albanese, J P, Alpe, V, Aoki, S, Arnold, R, Baroni, G, Barth, M, Bartley, J H, Bertrand, D, Bertrand-Coremans, G, Bisi, V, Aichi Women's Coll, Nisshin-Cho, Bari Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Bari (Italy), Birkbeck Coll, London, Interuniversity Inst. for High Energies, Brussels (Belgium), European Organization for Nuclear Research, Geneva (Switzerland), University Coll., Dublin (Ireland), Gifu Univ. (Japan). Faculty of Education, University Coll., London (UK), Nagoya Univ. (Japan). Dept. of Physics, Nagoya Inst. of Tech. (Japan), Rome Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Rome (Italy), Toho Univ., Funabashi, Chiba (Japan). Faculty of Science, Istituto Nazionale di Fisica Nucleare, Turin (Italy), Turin Univ. (Italy). Ist. di Fisica, Utsunomiya Univ. (Japan). Faculty of Education, and Yokohama National Univ. (Japan). Faculty of Education. 1985. "Direct observation of the decay of beauty particles into charm particles." Netherlands. https://doi.org/10.1016/0370-2693(85)91389-9.
@misc{etde_5088521,
title = {Direct observation of the decay of beauty particles into charm particles}
author = {Albanese, J P, Alpe, V, Aoki, S, Arnold, R, Baroni, G, Barth, M, Bartley, J H, Bertrand, D, Bertrand-Coremans, G, Bisi, V, Aichi Women's Coll, Nisshin-Cho, Bari Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Bari (Italy), Birkbeck Coll, London, Interuniversity Inst. for High Energies, Brussels (Belgium), European Organization for Nuclear Research, Geneva (Switzerland), University Coll., Dublin (Ireland), Gifu Univ. (Japan). Faculty of Education, University Coll., London (UK), Nagoya Univ. (Japan). Dept. of Physics, Nagoya Inst. of Tech. (Japan), Rome Univ. (Italy). Ist. di Fisica, Istituto Nazionale di Fisica Nucleare, Rome (Italy), Toho Univ., Funabashi, Chiba (Japan). Faculty of Science, Istituto Nazionale di Fisica Nucleare, Turin (Italy), Turin Univ. (Italy). Ist. di Fisica, Utsunomiya Univ. (Japan). Faculty of Education, and Yokohama National Univ. (Japan). Faculty of Education}
abstractNote = {The associated production of a pair of beauty particles B/sup -/ and anti B/sup 0/ by a 350 GeV ..pi../sup -/ interaction has been observed in an emulsion target inserted in an array of silicon microstrip detectors. Both beauty particles decay into charm particles, both of which are also observed to decay in the emulsion. Two negative muons were identified and their momenta measured in a large muon spectrometer. One muon has a psub(T) of 1.9 GeV/c and is associated with a beauty particle decay. The other, with a psub(T) of 0.45 GeV/c is associated with a charm particle decay. The flight times of the two beauty particles are respectively (0.8 +- 0.1).10/sup -13/s and (5sub(-1)/sup +2/).10/sup -13/s. Alternative interpretations of this event have negligible probability.}
doi = {10.1016/0370-2693(85)91389-9}
journal = []
volume = {158:2}
journal type = {AC}
place = {Netherlands}
year = {1985}
month = {Aug}
}