Evidence for the two-body charmless baryonic decay B+→ pΛ¯

The LHCb collaboration

doi:10.1007/JHEP04(2017)162

Evidence for the two-body charmless baryonic decay B⁺→ pΛ¯

The LHCb collaboration

European Organization for Nuclear Research
University Santiago de Compostela
University of Bristol
Clermont-Auvergne University
Aix-Marseille Université
University of Dortmund
University of Glasgow
Science Park 105
Petersburg Nuclear Physics Institute (PNPI)
Imperial College London
University of Cincinnati
Instituto de Biofisica da UFRJ
INFN
Laboratoire de l'Accélérateur Linéaire
ENAC-IIC-GEL
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
Sezione INFN di Ferrara
University of Ferrara
University of Maryland, College Park
University of Manchester
University of Heidelberg
Kurchatov Institute
Syracuse University
Sezione di Roma
University of Warwick
University of Barcelona
Pontifícia Universidade Católica do Rio de Janeiro
Institute for Nuclear Physics
National Centre for Nuclear Research (NCBJ)
Université Savoie Mont Blanc
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Centro Brasileiro de Pesquisas Fisicas
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
Institute for Theoretical and Experimental Physics
Universités Paris VI and VII
LNF-INFN
Moscow State University
University of Zurich
INFN Sezione di Bologna
University of Birmingham
University of Modena and Reggio Emilia
Max-Planck-Institut für Kernphysik
Massachusetts Institute of Technology
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
Sezione INFN di Cagliari
Yandex School of Data Analysis
RWTH Aachen University
University of Liverpool
Universitat Ramon LLull - CSIC
University of Bologna
University of Rome “Tor Vergata”
Sezione di Genova
University of Genoa
University of Edinburgh
Scuola Normale Superiore di Pisa
University of Oxford
University of Cambridge
Universitá di Cagliari
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Padova
INFN Sezione di Bari
Università degli studi di Bari Aldo Moro
Agh University of Science and Technology Faculty of Computer Science
Sezione INFN di Milano
Kharkov Institute of Physics and Technology
CCLRC Rutherford Appleton Laboratory
Institute for Nuclear Research of the Russian Academy of Sciences
University of Milano
Tsinghua University
University of Valencia
Universidade Federal Do Triângulo Mineiro (UFTM)
Universität Rostock
University of Chinese Academy of Sciences
Vrije Universiteit Amsterdam
Institute of Nuclear Research, National Academy of Sciences in Ukraine
Kurchatov Institute
Iligan Institute of Technology (IIT)
University College Dublin
Universidad Nacional de Colombia
Hanoi University of Science
ICS/University of Groningen
University of Pisa
University of Rome
Università degli Studi della Basilicata
Wuhan University
University of Urbino Carlo Bo
Central China Normal University
P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

A search for the rare two-body charmless baryonic decay B⁺→ pΛ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb⁻¹, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B⁺→pΛ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B⁺→K_S⁰π⁺ decay for normalisation,(Formula Presented.)where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].

langue originale	Anglais
Numéro d'article	162
journal	Journal of High Energy Physics
Volume	2017
Numéro de publication	4
Les DOIs	https://doi.org/10.1007/JHEP04(2017)162
état	Publié - 1 avr. 2017

Accès au document

10.1007/JHEP04(2017)162

Contient cette citation

@article{08368e01f3a648329bb5d0892d2eb466,

title = "Evidence for the two-body charmless baryonic decay B+→ pΛ¯",

abstract = "A search for the rare two-body charmless baryonic decay B+→ pΛ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B+→pΛ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B+→KS0π+ decay for normalisation,(Formula Presented.)where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].",

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

author = "\{The LHCb collaboration\} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and Cartelle, \{P. Alvarez\} and A. Alves 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 Romeu, \{J. Arnau\} and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, \{J. J.\} and A. Badalov and C. Baesso and S. Baker and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and M. Baszczyk and V. Batozskaya and B. Batsukh and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and F. Fleuret and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2017, The Author(s).",

year = "2017",

month = apr,

day = "1",

doi = "10.1007/JHEP04(2017)162",

language = "English",

volume = "2017",

journal = "Journal of High Energy Physics",

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T1 - Evidence for the two-body charmless baryonic decay B+→ pΛ¯

AU - The LHCb collaboration

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 - Ali, S.

AU - Alkhazov, G.

AU - Cartelle, P. Alvarez

AU - Alves, 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 - Romeu, J. Arnau

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Baszczyk, M.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Fleuret, F.

AU - Maurice, E.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - A search for the rare two-body charmless baryonic decay B+→ pΛ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B+→pΛ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B+→KS0π+ decay for normalisation,(Formula Presented.)where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].

AB - A search for the rare two-body charmless baryonic decay B+→ pΛ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B+→pΛ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B+→KS0π+ decay for normalisation,(Formula Presented.)where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].

KW - B physics

KW - Branching fraction

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

U2 - 10.1007/JHEP04(2017)162

DO - 10.1007/JHEP04(2017)162

M3 - Article

AN - SCOPUS:85018424298

SN - 1126-6708

VL - 2017

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 4

M1 - 162

ER -

Evidence for the two-body charmless baryonic decay B+→ pΛ¯

Résumé

Accès au document

Empreinte digitale

Contient cette citation

Evidence for the two-body charmless baryonic decay B⁺→ pΛ¯