Search for the Λb0 →Λη ′ and Λb0 → Λη decays with the LHCb detector

The LHCb collaboration

doi:10.1007/JHEP09(2015)006

Search for the Λ_b⁰ →Λη ′ and Λ_b⁰ → Λη decays with the LHCb detector

The LHCb collaboration

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

14 Scopus citations

Abstract

A search is performed for the as yet unobserved baryonic Λ_b⁰ → Λη ′ and Λ_b⁰ → Λη decays with 3 fb⁻¹ of proton-proton collision data recorded by the LHCb experiment. The B⁰ → K_s⁰η ′ decay is used as a normalisation channel. No significant signal is observed for the Λ_b⁰ → Λη ′ decay. An upper limit is found on the branching fraction of ℬΛb0→Λη′ < 3.1 × 10⁻⁶ at 90% confidence level. Evidence is seen for the presence of the Λ_b⁰ → Λη decay at the level of 3σ significance, with a branching fraction (Formula presented.).

Original language	English
Article number	6
Journal	Journal of High Energy Physics
Volume	2015
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2015)006
State	Published - 13 Sep 2015
Externally published	Yes

Keywords

B physics
Flavor physics
Hadron-Hadron Scattering

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10.1007/JHEP09(2015)006

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@article{ef5b03aa54934a54b0d153fc0ae7d585,

title = "Search for the Λb0 →Λη ′ and Λb0 → Λη decays with the LHCb detector",

abstract = "A search is performed for the as yet unobserved baryonic Λb0 → Λη ′ and Λb0 → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → Ks0η ′ decay is used as a normalisation channel. No significant signal is observed for the Λb0 → Λη ′ decay. An upper limit is found on the branching fraction of ℬΛb0→Λη′ < 3.1 × 10−6 at 90\% confidence level. Evidence is seen for the presence of the Λb0 → Λη decay at the level of 3σ significance, with a branching fraction (Formula presented.).",

keywords = "B physics, Flavor physics, Hadron-Hadron Scattering",

author = "\{The LHCb collaboration\} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder 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 J. Anderson 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 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 I. Belyaev and E. Ben-Haim and Milanes, \{D. A.\}",

note = "Publisher Copyright: {\textcopyright} 2015, The Author(s).",

year = "2015",

month = sep,

day = "13",

doi = "10.1007/JHEP09(2015)006",

language = "English",

volume = "2015",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

number = "9",

}

TY - JOUR

T1 - Search for the Λb0 →Λη ′ and Λb0 → Λη decays with the LHCb detector

AU - The LHCb collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

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 - Anderson, J.

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 - 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 - Belyaev, I.

AU - Ben-Haim, E.

AU - Milanes, D. A.

PY - 2015/9/13

Y1 - 2015/9/13

N2 - A search is performed for the as yet unobserved baryonic Λb0 → Λη ′ and Λb0 → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → Ks0η ′ decay is used as a normalisation channel. No significant signal is observed for the Λb0 → Λη ′ decay. An upper limit is found on the branching fraction of ℬΛb0→Λη′ < 3.1 × 10−6 at 90% confidence level. Evidence is seen for the presence of the Λb0 → Λη decay at the level of 3σ significance, with a branching fraction (Formula presented.).

AB - A search is performed for the as yet unobserved baryonic Λb0 → Λη ′ and Λb0 → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → Ks0η ′ decay is used as a normalisation channel. No significant signal is observed for the Λb0 → Λη ′ decay. An upper limit is found on the branching fraction of ℬΛb0→Λη′ < 3.1 × 10−6 at 90% confidence level. Evidence is seen for the presence of the Λb0 → Λη decay at the level of 3σ significance, with a branching fraction (Formula presented.).

KW - B physics

KW - Flavor physics

KW - Hadron-Hadron Scattering

UR - https://www.scopus.com/pages/publications/84978022748

U2 - 10.1007/JHEP09(2015)006

DO - 10.1007/JHEP09(2015)006

M3 - Article

AN - SCOPUS:84978022748

SN - 1126-6708

VL - 2015

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 9

M1 - 6

ER -

Search for the Λ_b⁰ →Λη ′ and Λ_b⁰ → Λη decays with the LHCb detector

Abstract

Keywords

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