Study of beauty hadron decays into Pairs of charm hadrons

LHCb Collaboration

doi:10.1103/PhysRevLett.112.202001

Study of beauty hadron decays into Pairs of charm hadrons

LHCb Collaboration

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

Résumé

First observations of the decays Λ⁰ _b → Λ_c+D^- _(s) are reported using data corresponding to an integrated luminosity of 3 fb^-1 collected at 7 and 8 TeV center-of-mass energies in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction B(B⁰ _s → D⁺D^- _s) is made and a search is performed for the decays B⁰ _(s) → Λ_c ⁺Λ_c ^-. The results obtained are (Equastion presented) Measurement of the mass of the Λ⁰ _b baryon relative to the B¯⁰ meson gives M(Λ⁰ _b) - M(B¯⁰) = 339.72±0.24(stat) ± 0.18(syst) MeV=c². This result provides the most precise measurement of the mass of the Λ_b ⁰ baryon to date.

langue originale	Anglais
Numéro d'article	202001
journal	Physical Review Letters
Volume	112
Numéro de publication	20
Les DOIs	https://doi.org/10.1103/PhysRevLett.112.202001
état	Publié - 21 mai 2014
Modification externe	Oui

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10.1103/PhysRevLett.112.202001

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@article{1d6a588ee7404028b6baaffb30e46945,

title = "Study of beauty hadron decays into Pairs of charm hadrons",

abstract = "First observations of the decays Λ0 b → Λc+D- (s) are reported using data corresponding to an integrated luminosity of 3 fb-1 collected at 7 and 8 TeV center-of-mass energies in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction B(B0 s → D+D- s) is made and a search is performed for the decays B0 (s) → Λc +Λc -. The results obtained are (Equastion presented) Measurement of the mass of the Λ0 b baryon relative to the B¯0 meson gives M(Λ0 b) - M(B¯0) = 339.72±0.24(stat) ± 0.18(syst) MeV=c2. This result provides the most precise measurement of the mass of the Λb 0 baryon to date.",

author = "\{LHCb Collaboration\} and R. Aaij and A. Abba and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni 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 J. Anderson and R. Andreassen and M. Andreotti and Andrews, \{J. E.\} and Appleby, \{R. B.\} and \{Aquines Gutierrez\}, O. and F. Archilli 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 V. Balagura and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and T. Bauer and A. Bay and J. Beddow and F. Bedeschi and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and G. Bencivenni",

note = "Publisher Copyright: {\textcopyright} 2014 CERN, for the LHCb Collaboration.",

year = "2014",

month = may,

day = "21",

doi = "10.1103/PhysRevLett.112.202001",

language = "English",

volume = "112",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "20",

}

TY - JOUR

T1 - Study of beauty hadron decays into Pairs of charm hadrons

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abba, A.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

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 - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

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 - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Batozskaya, V.

AU - Bauer, T.

AU - Bay, A.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Bencivenni, G.

PY - 2014/5/21

Y1 - 2014/5/21

N2 - First observations of the decays Λ0 b → Λc+D- (s) are reported using data corresponding to an integrated luminosity of 3 fb-1 collected at 7 and 8 TeV center-of-mass energies in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction B(B0 s → D+D- s) is made and a search is performed for the decays B0 (s) → Λc +Λc -. The results obtained are (Equastion presented) Measurement of the mass of the Λ0 b baryon relative to the B¯0 meson gives M(Λ0 b) - M(B¯0) = 339.72±0.24(stat) ± 0.18(syst) MeV=c2. This result provides the most precise measurement of the mass of the Λb 0 baryon to date.

AB - First observations of the decays Λ0 b → Λc+D- (s) are reported using data corresponding to an integrated luminosity of 3 fb-1 collected at 7 and 8 TeV center-of-mass energies in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction B(B0 s → D+D- s) is made and a search is performed for the decays B0 (s) → Λc +Λc -. The results obtained are (Equastion presented) Measurement of the mass of the Λ0 b baryon relative to the B¯0 meson gives M(Λ0 b) - M(B¯0) = 339.72±0.24(stat) ± 0.18(syst) MeV=c2. This result provides the most precise measurement of the mass of the Λb 0 baryon to date.

UR - https://www.scopus.com/pages/publications/84937644642

U2 - 10.1103/PhysRevLett.112.202001

DO - 10.1103/PhysRevLett.112.202001

M3 - Article

AN - SCOPUS:84937644642

SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

M1 - 202001

ER -

Study of beauty hadron decays into Pairs of charm hadrons

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