Observations of Λ<inf>b</inf>0 → ΛK+π− and Λ<inf>b</inf>0 → ΛK+ K− decays and searches for other Λ<inf>b</inf>0 and Ξ<inf>b</inf>0 decays to Λh+ h′− final states

null The LHCb collaboration; R. Aaij; C. Abellán Beteta; B. Adeva; M. Adinolfi; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; G. Andreassi; M. Andreotti; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; P. d’Argent; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; A. Badalov; C. Baesso; S. Baker; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; V. Batozskaya; V. Battista; A. Bay; L. Beaucourt; J. Beddow; F. Bedeschi; I. Bediaga; L. J. Bel; V. Bellee; N. Belloli; I. Belyaev; E. Ben-Haim; G. Bencivenni; S. Benson; J. Benton; A. Berezhnoy; R. Bernet; A. Bertolin; F. Betti; M. O. Bettler; M. van Beuzekom; S. Bifani; P. Billoir; T. Bird; A. Birnkraut; A. Bizzeti; T. Blake; F. Blanc; J. Blouw; S. Blusk; V. Bocci; A. Bondar; N. Bondar; W. Bonivento; A. Borgheresi; S. Borghi; M. Borisyak; M. Borsato; M. Boubdir; T. J.V. Bowcock; E. Bowen; C. Bozzi; S. Braun; M. Britsch; T. Britton; J. Brodzicka; E. Buchanan; C. Burr; A. Bursche; J. Buytaert; S. Cadeddu

doi:10.1007/JHEP05(2016)081

Observations of Λ<inf>b</inf>0 → ΛK+π− and Λ<inf>b</inf>0 → ΛK+ K− decays and searches for other Λ<inf>b</inf>0 and Ξ<inf>b</inf>0 decays to Λh+ h′− final states

The LHCb collaboration, R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. AndreassiM. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, P. d’Argent, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, S. Baker, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, V. Battista, A. Bay, L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, L. J. Bel, V. Bellee, N. Belloli, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, A. Bertolin, F. Betti, M. O. Bettler, M. van Beuzekom, S. Bifani, P. Billoir, T. Bird, A. Birnkraut, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, A. Borgheresi, S. Borghi, M. Borisyak, M. Borsato, M. Boubdir, T. J.V. Bowcock, E. Bowen, C. Bozzi, S. Braun, M. Britsch, T. Britton, J. Brodzicka, E. Buchanan, C. Burr, A. Bursche, J. Buytaert, S. Cadeddu

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

A search is performed for the charmless three-body decays of the Λ _b ⁰ and Ξ _b ⁰ baryons to the final states Λh ⁺h′ ⁻, where h ⁽′ ⁾ = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb ⁻¹ of pp collisions, collected by the LHCb experiment. The Λ _b ⁰ → ΛK ⁺π ⁻ and Λ _b ⁰ → ΛK ⁺K ⁻ decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ _b ⁰ → Λπ ⁺π ⁻ decay and limits are set on the branching fractions of Ξ _b ⁰ baryon decays to the Λh ⁺h′ ⁻ final states.

Original language	English
Article number	81
Journal	Journal of High Energy Physics
Volume	2016
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2016)081
Publication status	Published - 1 May 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016, The Author(s).

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1007/JHEP05(2016)081

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The LHCb collaboration, Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., ... Cadeddu, S. (2016). Observations of Λ<inf>b</inf>0 → ΛK+π− and Λ<inf>b</inf>0 → ΛK+ K− decays and searches for other Λ<inf>b</inf>0 and Ξ<inf>b</inf>0 decays to Λh+ h′− final states. Journal of High Energy Physics, 2016(5), [81]. https://doi.org/10.1007/JHEP05(2016)081

The LHCb collaboration ; Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; Ajaltouni, Z. ; Akar, S. ; Albrecht, J. ; Alessio, F. ; Alexander, M. ; Ali, S. ; Alkhazov, G. ; Alvarez Cartelle, P. ; Alves, A. A. ; Amato, S. ; Amerio, S. ; Amhis, Y. ; An, L. ; Anderlini, L. ; Andreassi, G. ; Andreotti, M. ; Andrews, J. E. ; Appleby, R. B. ; Aquines Gutierrez, O. ; Archilli, F. ; d’Argent, P. ; Artamonov, A. ; Artuso, M. ; Aslanides, E. ; Auriemma, G. ; Baalouch, M. ; Bachmann, S. ; Back, J. J. ; Badalov, A. ; Baesso, C. ; Baker, S. ; Baldini, W. ; Barlow, R. J. ; Barschel, C. ; Barsuk, S. ; Barter, W. ; Batozskaya, V. ; Battista, V. ; Bay, A. ; Beaucourt, L. ; Beddow, J. ; Bedeschi, F. ; Bediaga, I. ; Bel, L. J. ; Bellee, V. ; Belloli, N. ; Belyaev, I. ; Ben-Haim, E. ; Bencivenni, G. ; Benson, S. ; Benton, J. ; Berezhnoy, A. ; Bernet, R. ; Bertolin, A. ; Betti, F. ; Bettler, M. O. ; van Beuzekom, M. ; Bifani, S. ; Billoir, P. ; Bird, T. ; Birnkraut, A. ; Bizzeti, A. ; Blake, T. ; Blanc, F. ; Blouw, J. ; Blusk, S. ; Bocci, V. ; Bondar, A. ; Bondar, N. ; Bonivento, W. ; Borgheresi, A. ; Borghi, S. ; Borisyak, M. ; Borsato, M. ; Boubdir, M. ; Bowcock, T. J.V. ; Bowen, E. ; Bozzi, C. ; Braun, S. ; Britsch, M. ; Britton, T. ; Brodzicka, J. ; Buchanan, E. ; Burr, C. ; Bursche, A. ; Buytaert, J. ; Cadeddu, S. / Observations of Λ<inf>b</inf>0 → ΛK+π− and Λ<inf>b</inf>0 → ΛK+ K− decays and searches for other Λ<inf>b</inf>0 and Ξ<inf>b</inf>0 decays to Λh+ h′− final states. In: Journal of High Energy Physics. 2016 ; Vol. 2016, No. 5.

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title = "Observations of Λb0 → ΛK+π− and Λb0 → ΛK+ K− decays and searches for other Λb0 and Ξb0 decays to Λh+ h′− final states",

abstract = "A search is performed for the charmless three-body decays of the Λ b 0 and Ξ b 0 baryons to the final states Λh +h′ −, where h (′ ) = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb −1 of pp collisions, collected by the LHCb experiment. The Λ b 0 → ΛK +π − and Λ b 0 → ΛK +K − decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ b 0 → Λπ +π − decay and limits are set on the branching fractions of Ξ b 0 baryon decays to the Λh +h′ − final states. ",

author = "{The LHCb collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. 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 {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 {Aquines Gutierrez}, O. and F. Archilli and P. d{\textquoteright}Argent and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch 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 V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and Bel, {L. J.} and V. Bellee and N. Belloli and I. Belyaev and E. Ben-Haim and G. Bencivenni and S. Benson and J. Benton and A. Berezhnoy and R. Bernet and A. Bertolin and F. Betti and Bettler, {M. O.} and {van Beuzekom}, M. and S. Bifani and P. Billoir and T. Bird and A. Birnkraut and A. Bizzeti and T. Blake and F. Blanc and J. Blouw and S. Blusk and V. Bocci and A. Bondar and N. Bondar and W. Bonivento and A. Borgheresi and S. Borghi and M. Borisyak and M. Borsato and M. Boubdir and Bowcock, {T. J.V.} and E. Bowen and C. Bozzi and S. Braun and M. Britsch and T. Britton and J. Brodzicka and E. Buchanan and C. Burr and A. Bursche and J. Buytaert and S. Cadeddu",

year = "2016",

month = may,

day = "1",

doi = "10.1007/JHEP05(2016)081",

language = "English",

volume = "2016",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "5",

}

The LHCb collaboration, Aaij, R, Abellán Beteta, C, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Aquines Gutierrez, O, Archilli, F, d’Argent, P, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Bel, LJ, Bellee, V, Belloli, N, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bertolin, A, Betti, F, Bettler, MO, van Beuzekom, M, Bifani, S, Billoir, P, Bird, T, Birnkraut, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borgheresi, A, Borghi, S, Borisyak, M, Borsato, M, Boubdir, M, Bowcock, TJV, Bowen, E, Bozzi, C, Braun, S, Britsch, M, Britton, T, Brodzicka, J, Buchanan, E, Burr, C, Bursche, A, Buytaert, J & Cadeddu, S 2016, 'Observations of Λ<inf>b</inf>0 → ΛK+π− and Λ<inf>b</inf>0 → ΛK+ K− decays and searches for other Λ<inf>b</inf>0 and Ξ<inf>b</inf>0 decays to Λh+ h′− final states', Journal of High Energy Physics, vol. 2016, no. 5, 81. https://doi.org/10.1007/JHEP05(2016)081

Observations of Λ<inf>b</inf>0 → ΛK+π− and Λ<inf>b</inf>0 → ΛK+ K− decays and searches for other Λ<inf>b</inf>0 and Ξ<inf>b</inf>0 decays to Λh+ h′− final states. / The LHCb collaboration; Aaij, R.; Abellán Beteta, C.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A.; Amato, S.; Amerio, S.; Amhis, Y.; An, L.; Anderlini, L.; Andreassi, G.; Andreotti, M.; Andrews, J. E.; Appleby, R. B.; Aquines Gutierrez, O.; Archilli, F.; d’Argent, P.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G.; Baalouch, M.; Bachmann, S.; Back, J. J.; Badalov, A.; Baesso, C.; Baker, S.; Baldini, W.; Barlow, R. J.; Barschel, C.; Barsuk, S.; Barter, W.; Batozskaya, V.; Battista, V.; Bay, A.; Beaucourt, L.; Beddow, J.; Bedeschi, F.; Bediaga, I.; Bel, L. J.; Bellee, V.; Belloli, N.; Belyaev, I.; Ben-Haim, E.; Bencivenni, G.; Benson, S.; Benton, J.; Berezhnoy, A.; Bernet, R.; Bertolin, A.; Betti, F.; Bettler, M. O.; van Beuzekom, M.; Bifani, S.; Billoir, P.; Bird, T.; Birnkraut, A.; Bizzeti, A.; Blake, T.; Blanc, F.; Blouw, J.; Blusk, S.; Bocci, V.; Bondar, A.; Bondar, N.; Bonivento, W.; Borgheresi, A.; Borghi, S.; Borisyak, M.; Borsato, M.; Boubdir, M.; Bowcock, T. J.V.; Bowen, E.; Bozzi, C.; Braun, S.; Britsch, M.; Britton, T.; Brodzicka, J.; Buchanan, E.; Burr, C.; Bursche, A.; Buytaert, J.; Cadeddu, S.

In: Journal of High Energy Physics, Vol. 2016, No. 5, 81, 01.05.2016.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Observations of Λb0 → ΛK+π− and Λb0 → ΛK+ K− decays and searches for other Λb0 and Ξb0 decays to Λh+ h′− final states

AU - The LHCb collaboration, null

AU - Aaij, R.

AU - Abellán Beteta, C.

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 - 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 - Aquines Gutierrez, O.

AU - Archilli, F.

AU - d’Argent, P.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

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 - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Bel, L. J.

AU - Bellee, V.

AU - Belloli, N.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Berezhnoy, A.

AU - Bernet, R.

AU - Bertolin, A.

AU - Betti, F.

AU - Bettler, M. O.

AU - van Beuzekom, M.

AU - Bifani, S.

AU - Billoir, P.

AU - Bird, T.

AU - Birnkraut, A.

AU - Bizzeti, A.

AU - Blake, T.

AU - Blanc, F.

AU - Blouw, J.

AU - Blusk, S.

AU - Bocci, V.

AU - Bondar, A.

AU - Bondar, N.

AU - Bonivento, W.

AU - Borgheresi, A.

AU - Borghi, S.

AU - Borisyak, M.

AU - Borsato, M.

AU - Boubdir, M.

AU - Bowcock, T. J.V.

AU - Bowen, E.

AU - Bozzi, C.

AU - Braun, S.

AU - Britsch, M.

AU - Britton, T.

AU - Brodzicka, J.

AU - Buchanan, E.

AU - Burr, C.

AU - Bursche, A.

AU - Buytaert, J.

AU - Cadeddu, S.

PY - 2016/5/1

Y1 - 2016/5/1

N2 - A search is performed for the charmless three-body decays of the Λ b 0 and Ξ b 0 baryons to the final states Λh +h′ −, where h (′ ) = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb −1 of pp collisions, collected by the LHCb experiment. The Λ b 0 → ΛK +π − and Λ b 0 → ΛK +K − decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ b 0 → Λπ +π − decay and limits are set on the branching fractions of Ξ b 0 baryon decays to the Λh +h′ − final states.

AB - A search is performed for the charmless three-body decays of the Λ b 0 and Ξ b 0 baryons to the final states Λh +h′ −, where h (′ ) = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb −1 of pp collisions, collected by the LHCb experiment. The Λ b 0 → ΛK +π − and Λ b 0 → ΛK +K − decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ b 0 → Λπ +π − decay and limits are set on the branching fractions of Ξ b 0 baryon decays to the Λh +h′ − final states.

UR - http://www.scopus.com/inward/record.url?scp=84975783967&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84975783967&partnerID=8YFLogxK

U2 - 10.1007/JHEP05(2016)081

DO - 10.1007/JHEP05(2016)081

M3 - Article

VL - 2016

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 5

M1 - 81

ER -

The LHCb collaboration, Aaij R, Abellán Beteta C, Adeva B, Adinolfi M, Ajaltouni Z et al. Observations of Λ<inf>b</inf>0 → ΛK+π− and Λ<inf>b</inf>0 → ΛK+ K− decays and searches for other Λ<inf>b</inf>0 and Ξ<inf>b</inf>0 decays to Λh+ h′− final states. Journal of High Energy Physics. 2016 May 1;2016(5). 81. https://doi.org/10.1007/JHEP05(2016)081