Measurement of the lifetime of b-baryons

Abreu P.; Adam W.; Adye T.; Adzic P.; Albrecht Z.; Alderweireld T.; Alekseev G.D.; Alemany R.; Allmendinger T.; Allport P.P.; Almehed S.; Amaldi U.; Amato S.; Anassontzis E.G.; Andersson P.; Andreazza A.; Andringa S.; Antilogus P.; Apel W.D.; Arnoud Y.; Åsman B.; Augustin J.E.; Augustinus A.; Baillon P.; Bambade P.; Barao F.; Barbiellini G.; Barbier R.; Bardin D.Y.; Barker G.; Baroncelli A.; Battaglia M.; Baubillier M.; Becks K.H.; Begalli M.; Beilliere P.; Belokopytov Y.; Belous K.; Benvenuti A.C.; Berat C.; Berggren M.; Bertini D.; Bertrand D.; Besancon M.; Bianchi F.; Bigi M.; Bilenky M.S.; Bizouard M.A.; Bloch D.; Blom H.M.; Bonesini M.; Bonivento W.; Boonekamp M.; Booth P.S.L.; Borgland A.W.; Borisov G.; Bosio C.; Botner O.; Boudinov E.; Bouquet B.; Bourdarios C.; Bowcock T.J.V.; Boyko I.; Bozovic I.; Bozzo M.; Branchini P.; Brenke T.; Brenner R.A.; Bruckman P.; Brunet J.M.; Bugge L.; Buran T.; Burgsmueller T.; Buschmann P.; Cabrera S.; Caccia M.; Calvi M.; Camporesi T.; Canale V.; Carena F.; Carroll L.; Caso C.; Castillo Gimenez M.V.; Cattai A.; Cavallo F.R.; Chabaud V.; Chapkin M.; Charpentier P.; Chaussard L.; Checchia P.; Chelkov G.A.; Chierici R.; Chliapnikov P.; Chochula P.; Chorowicz V.; Chudoba J.; Cieslik K.; Collins P.; Contri R.; Cortina E.

Title

Date Issued

01 January 1999

Access level

metadata only access

Resource Type

journal article

Author(s)

Abreu P.

Adam W.

Adye T.

Adzic P.

Albrecht Z.

Alderweireld T.

Alekseev G.D.

Alemany R.

Allmendinger T.

Allport P.P.

Almehed S.

Amaldi U.

Amato S.

Anassontzis E.G.

Andersson P.

Andreazza A.

Andringa S.

Antilogus P.

Apel W.D.

Arnoud Y.

Åsman B.

Augustin J.E.

Augustinus A.

Baillon P.

Bambade P.

Barao F.

Barbiellini G.

Barbier R.

Bardin D.Y.

Barker G.

Baroncelli A.

Battaglia M.

Baubillier M.

Becks K.H.

Begalli M.

Beilliere P.

Belokopytov Y.

Belous K.

Benvenuti A.C.

Berat C.

Berggren M.

Bertini D.

Bertrand D.

Besancon M.

Bianchi F.

Bigi M.

Bilenky M.S.

Bizouard M.A.

Bloch D.

Blom H.M.

Bonesini M.

Bonivento W.

Boonekamp M.

Booth P.S.L.

Borgland A.W.

Borisov G.

Bosio C.

Botner O.

Boudinov E.

Bouquet B.

Bourdarios C.

Bowcock T.J.V.

Boyko I.

Bozovic I.

Bozzo M.

Branchini P.

Brenke T.

Brenner R.A.

Bruckman P.

Brunet J.M.

Bugge L.

Buran T.

Burgsmueller T.

Buschmann P.

Cabrera S.

Caccia M.

Calvi M.

Camporesi T.

Canale V.

Carena F.

Carroll L.

Caso C.

Castillo Gimenez M.V.

Cattai A.

Cavallo F.R.

Chabaud V.

Chapkin M.

Charpentier P.

Chaussard L.

Checchia P.

Chelkov G.A.

Chierici R.

Chliapnikov P.

Chochula P.

Chorowicz V.

Chudoba J.

Cieslik K.

Collins P.

Contri R.

Cortina E.

Publisher(s)

Springer New York LLC

Abstract

The average lifetime of weakly decaying b-baryons was studied using 3.6 million Z0 hadronic decays collected by the DELPHI detector at LEP. The measurement of the proper decay time distribution of secondary vertices was used on three complementary samples. The first sample consisted of events with a fully reconstructed Λ+c and an opposite charge lepton, or an oppositely charged lepton pair accompanied by a Λ0. The other two samples were more inclusive, where b-baryon semileptonic decays were recognized by the presence of either a proton identified by the RICH detector or a Λ0 and a lepton of charge opposite to that of the proton. The combined result was: τ(b-baryon) = 1.14 ± 0.08 (stat) ± 0.04 (syst) ps.

Start page

185

End page

199

Volume

10

Issue

2

Language

English

OCDE Knowledge area

Física de partículas, Campos de la Física Física nuclear

DOI

10.1007/s100529900112

Scopus EID

2-s2.0-0040910821

Source

European Physical Journal C

ISSN of the container

14346044

Sources of information: Directorio de Producción Científica Scopus

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