Measurement of branching fractions of charmless four-body Λb        0 and Ξb        0 decays

The Lhcb Collaboration

doi:10.1007/JHEP02(2018)098

Measurement of branching fractions of charmless four-body Λ_b ⁰ and Ξ_b ⁰ decays

The Lhcb Collaboration

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

A search for charmless four-body decays of Λ_b ⁰ and Ξ_b ⁰ baryons with a proton and three charged mesons (either kaons or pions) in the final state is performed. The data sample used was recorded in 2011 and 2012 with the LHCb experiment and corresponds to an integrated luminosity of 3 fb⁻¹. Six decay modes are observed, among which Λ_b ⁰ → pK⁻π⁺π⁻,Λ_b ⁰ → pK⁻K⁺K⁻,Ξ_b ⁰ → pK⁻π⁺π⁻ and Ξ_b ⁰ → pK⁻π⁺K⁻ are established for the first time. Their branching fractions (including the ratio of hadronisation fractions in the case of the Ξ_b ⁰ baryon) are determined relative to the Λ_b ⁰ → Λ_c ⁺π⁻ decay.[Figure not available: see fulltext.].

Original language	English
Article number	98
Journal	Journal of High Energy Physics
Volume	2018
Issue number	2
DOIs	https://doi.org/10.1007/JHEP02(2018)098
Publication status	Published - 1 Feb 2018

Funding

Open Access, Copyright CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3.

Funders	Funder number
Agence Nationale de la Recherche
National Academy of Sciences of Ukraine
Federal Agency for Scientific Organizations
Narodowe Centrum Nauki
OCEVU
National Science Foundation
Institut national de physique nucléaire et de physique des particules
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministry of Science and Technology, Taiwan
Herchel Smith Fund
Leverhulme Trust
Instituto Nazionale di Fisica Nucleare
Financiadora de Estudos e Projetos
Marie Sklo dowska-Curie Actions
Centre National de la Recherche Scientifique
Bundesministerium für Bildung und Forschung
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Deutsche Forschungsgemeinschaft
European Commission
Région Auvergne-Rhône-Alpes
Russian Foundation for Basic Research
English-Speaking Union
Yandex LLC
MinES
Royal Society
Sociedad Española de Reumatología
European Research Council
Ministerstwo Nauki i Szkolnictwa Wyższego
Generalitat Valenciana
CERN
Alexander von Humboldt-Stiftung
National Natural Science Foundation of China
Science and Technology Facilities Council	ST/N000250/1, ST/H006737/1, ST/N000331/1, LHCb Upgrades, GRIDPP, ST/J004332/1, 1641747, 1681016, ST/K003410/1, 1796908, LHCb, ST/N000463/1, ST/N000455/1, ST/L003163/1, ST/N000242/1
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	166208

Keywords

B physics
Branching fraction
Hadron-Hadron scattering (experiments)

Access to Document

10.1007/JHEP02(2018)098

Persistent URL (handle)

Persistent link

Cite this

@article{88b458b639fa4bb98224510c9e35019b,

title = "Measurement of branching fractions of charmless four-body Λb 0 and Ξb 0 decays",

abstract = "A search for charmless four-body decays of Λb 0 and Ξb 0 baryons with a proton and three charged mesons (either kaons or pions) in the final state is performed. The data sample used was recorded in 2011 and 2012 with the LHCb experiment and corresponds to an integrated luminosity of 3 fb−1. Six decay modes are observed, among which Λb 0 → pK−π+π−,Λb 0 → pK−K+K−,Ξb 0 → pK−π+π− and Ξb 0 → pK−π+K− are established for the first time. Their branching fractions (including the ratio of hadronisation fractions in the case of the Ξb 0 baryon) are determined relative to the Λb 0 → Λc +π− decay.[Figure not available: see fulltext.].",

keywords = "B physics, Branching fraction, Hadron-Hadron scattering (experiments)",

author = "R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and S. Ali and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, \{J. E.\} and Appleby, \{R. B.\} and F. Archilli and P. d{\textquoteright}Argent and \{Arnau Romeu\}, J. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, \{J. J.\} and A. Badalov and \{Carvalho Akiba\}, K. and M. Ferro-Luzzi and T. Ketel and T. Li and M. Merk and Onderwater, \{C. J.G.\} and G. Raven and M. Schiller and N. Serra and B. Storaci and V. Syropoulos and \{van Tilburg\}, J. and S. Tolk and P. Tsopelas and N. Tuning and \{The Lhcb Collaboration\}",

year = "2018",

month = feb,

day = "1",

doi = "10.1007/JHEP02(2018)098",

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

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T1 - Measurement of branching fractions of charmless four-body Λb 0 and Ξb 0 decays

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Carvalho Akiba, K.

AU - Ferro-Luzzi, M.

AU - Ketel, T.

AU - Li, T.

AU - Merk, M.

AU - Onderwater, C. J.G.

AU - Raven, G.

AU - Schiller, M.

AU - Serra, N.

AU - Storaci, B.

AU - Syropoulos, V.

AU - van Tilburg, J.

AU - Tolk, S.

AU - Tsopelas, P.

AU - Tuning, N.

AU - The Lhcb Collaboration

PY - 2018/2/1

Y1 - 2018/2/1

N2 - A search for charmless four-body decays of Λb 0 and Ξb 0 baryons with a proton and three charged mesons (either kaons or pions) in the final state is performed. The data sample used was recorded in 2011 and 2012 with the LHCb experiment and corresponds to an integrated luminosity of 3 fb−1. Six decay modes are observed, among which Λb 0 → pK−π+π−,Λb 0 → pK−K+K−,Ξb 0 → pK−π+π− and Ξb 0 → pK−π+K− are established for the first time. Their branching fractions (including the ratio of hadronisation fractions in the case of the Ξb 0 baryon) are determined relative to the Λb 0 → Λc +π− decay.[Figure not available: see fulltext.].

AB - A search for charmless four-body decays of Λb 0 and Ξb 0 baryons with a proton and three charged mesons (either kaons or pions) in the final state is performed. The data sample used was recorded in 2011 and 2012 with the LHCb experiment and corresponds to an integrated luminosity of 3 fb−1. Six decay modes are observed, among which Λb 0 → pK−π+π−,Λb 0 → pK−K+K−,Ξb 0 → pK−π+π− and Ξb 0 → pK−π+K− are established for the first time. Their branching fractions (including the ratio of hadronisation fractions in the case of the Ξb 0 baryon) are determined relative to the Λb 0 → Λc +π− decay.[Figure not available: see fulltext.].

KW - B physics

KW - Branching fraction

KW - Hadron-Hadron scattering (experiments)

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DO - 10.1007/JHEP02(2018)098

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VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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