Search for the Xb and other hidden-beauty states in the π+π−Υ(1S) channel at ATLAS

ATLAS Collaboration

doi:10.1016/j.physletb.2014.11.055

Search for the X_b and other hidden-beauty states in the π⁺π⁻Υ(1S) channel at ATLAS

ATLAS Collaboration

Aix-Marseille Université and CNRS/IN2P3
Homer L. Dodge Department of Physics and Astronomy
University of Oklahoma
Academia Sinica - Institute of Physics
Université Paris-Sud and CNRS/IN2P3
Azerbaijan National Academy of Sciences
University of Amsterdam
Department of Physics
Oklahoma State University
Department of Physics and Astronomy
Michigan State University
Department of Physics
University of Toronto
Raymond and Beverly Sackler School of Physics and Astronomy
Tel Aviv University
Department of Physics
Technion-Israel Institute of Technology
CERN
Department of Physics
Stockholm University
The Oskar Klein Centre
INFN Gruppo Collegato di Udine
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
Department of Physics
King's College London
Faculty of Physics and Applied Computer Science
AGH University of Krakow
Physics Department
Brookhaven National Laboratory
Yale University
Fakultät für Physik
Ludwig Maximilian University of Munich
Didcot
Institute of Physics
University of Belgrade
Laboratório de Instrumentação e Física Experimental de Partículas
Departamento de Fisica Teorica y Del Cosmos
University of Granada
Albert Einstein Center for Fundamental Physics
University of Bern
Boston University
Joint Institute for Nuclear Research
Dipartimento di Fisica
University of Rome Tor Vergata
Fysiska institutionen
Lund University
International Center for Elementary Particle Physics
The University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Dipartimento di Fisica e Astronomia
University of Bologna
Department of Physics and Astronomy
University of Victoria BC
Université Grenoble Alpes
Instituto de Física La Plata
Horia Hulubei National Institute of Physics and Nuclear Engineering
Section de Physique
University of Geneva
Physics Department
National Technical University of Athens
Dipartimento di Chimica
University of Udine
The University of Chicago
School of Physics and Astronomy
University of Birmingham
Lancaster University
Oliver Lodge Laboratory
University of Liverpool
School of Physics and Astronomy
University of Manchester
Dipartimento di Fisica
University of Naples Federico II
University of Copenhagen
Kobe University

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

33 Scopus citations

Abstract

This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges of 10.05–10.31 GeV and 10.40–11.00 GeV, in the channel X_b→π⁺π⁻ϒ(1S)(→μ⁺μ⁻), using 16.2 fb⁻¹ of s=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is found, and upper limits are set on the product of the X_b cross section and branching fraction, relative to those of the ϒ(2S), at the 95% confidence level using the CL_S approach. These limits range from 0.8% to 4.0%, depending on mass. For masses above 10.1 GeV, the expected upper limits from this analysis are the most restrictive to date. Searches for production of the ϒ(1³D_J), ϒ(10860), and ϒ(11020) states also reveal no significant signals.

Original language	English
Pages (from-to)	199-217
Number of pages	19
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	740
DOIs	https://doi.org/10.1016/j.physletb.2014.11.055
State	Published - 5 Jan 2015
Externally published	Yes

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10.1016/j.physletb.2014.11.055

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@article{4c7397640f3046698dc93a81af7d499c,

title = "Search for the Xb and other hidden-beauty states in the π+π−Υ(1S) channel at ATLAS",

abstract = "This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges of 10.05{\textendash}10.31 GeV and 10.40{\textendash}11.00 GeV, in the channel Xb→π+π−ϒ(1S)(→μ+μ−), using 16.2 fb−1 of s=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is found, and upper limits are set on the product of the Xb cross section and branching fraction, relative to those of the ϒ(2S), at the 95\% confidence level using the CLS approach. These limits range from 0.8\% to 4.0\%, depending on mass. For masses above 10.1 GeV, the expected upper limits from this analysis are the most restrictive to date. Searches for production of the ϒ(13DJ), ϒ(10860), and ϒ(11020) states also reveal no significant signals.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and AbouZeid, \{O. S.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and T. Agatonovic-Jovin and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and S. Albrand and \{Alconada Verzini\}, \{M. J.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Allbrooke, \{B. M.M.\} and Allison, \{L. J.\} and Allport, \{P. P.\} and J. Almond and A. Aloisio and A. Alonso and L. Yuan",

note = "Publisher Copyright: {\textcopyright} 2014 The Authors",

year = "2015",

month = jan,

day = "5",

doi = "10.1016/j.physletb.2014.11.055",

language = "英语",

volume = "740",

pages = "199--217",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Search for the Xb and other hidden-beauty states in the π+π−Υ(1S) channel at ATLAS

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - AbouZeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Allport, P. P.

AU - Almond, J.

AU - Aloisio, A.

AU - Alonso, A.

AU - Yuan, L.

PY - 2015/1/5

Y1 - 2015/1/5

N2 - This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges of 10.05–10.31 GeV and 10.40–11.00 GeV, in the channel Xb→π+π−ϒ(1S)(→μ+μ−), using 16.2 fb−1 of s=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is found, and upper limits are set on the product of the Xb cross section and branching fraction, relative to those of the ϒ(2S), at the 95% confidence level using the CLS approach. These limits range from 0.8% to 4.0%, depending on mass. For masses above 10.1 GeV, the expected upper limits from this analysis are the most restrictive to date. Searches for production of the ϒ(13DJ), ϒ(10860), and ϒ(11020) states also reveal no significant signals.

AB - This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges of 10.05–10.31 GeV and 10.40–11.00 GeV, in the channel Xb→π+π−ϒ(1S)(→μ+μ−), using 16.2 fb−1 of s=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is found, and upper limits are set on the product of the Xb cross section and branching fraction, relative to those of the ϒ(2S), at the 95% confidence level using the CLS approach. These limits range from 0.8% to 4.0%, depending on mass. For masses above 10.1 GeV, the expected upper limits from this analysis are the most restrictive to date. Searches for production of the ϒ(13DJ), ϒ(10860), and ϒ(11020) states also reveal no significant signals.

UR - https://www.scopus.com/pages/publications/85040559923

U2 - 10.1016/j.physletb.2014.11.055

DO - 10.1016/j.physletb.2014.11.055

M3 - 文章

AN - SCOPUS:85040559923

SN - 0370-2693

VL - 740

SP - 199

EP - 217

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Search for the X_b and other hidden-beauty states in the π⁺π⁻Υ(1S) channel at ATLAS

Abstract

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