Search for beautiful tetraquarks in the ϒ(1S)μ + μ invariant-mass spectrum

The LHCb Collaboration

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The ϒ(1S)μ+μ invariant-mass distribution is investigated for a possible exotic meson state composed of two b quarks and two b¯ quarks, Xb b . The analysis is based on a data sample of pp collisions recorded with the LHCb detector at centre-of-mass energies s=7, 8 and 13 TeV, corresponding to an integrated luminosity of 6.3 fb−1. No significant excess is found, and upper limits are set on the product of the production cross-section and the branching fraction as functions of the mass of the Xb b state. The limits are set in the fiducial volume where all muons have pseudorapidity in the range [2.0, 5.0], and the Xb b state has rapidity in the range [2.0, 4.5] and transverse momentum less than 15 GeV/c.[Figure not available: see fulltext.].

Original languageEnglish
Article number86
JournalJournal of High Energy Physics
Volume2018
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018

Fingerprint

mass spectra
quarks
mass distribution
transverse momentum
center of mass
muons
mesons
luminosity
collisions
detectors
cross sections
products
energy

Keywords

  • B physics
  • Exotics
  • Hadron-Hadron scattering (experiments)
  • Heavy quark production

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Search for beautiful tetraquarks in the ϒ(1S)μ + μ invariant-mass spectrum. / The LHCb Collaboration.

In: Journal of High Energy Physics, Vol. 2018, No. 10, 86, 01.10.2018.

Research output: Contribution to journalArticle

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abstract = "The ϒ(1S)μ+μ− invariant-mass distribution is investigated for a possible exotic meson state composed of two b quarks and two b¯ quarks, Xb b¯ b b¯. The analysis is based on a data sample of pp collisions recorded with the LHCb detector at centre-of-mass energies s=7, 8 and 13 TeV, corresponding to an integrated luminosity of 6.3 fb−1. No significant excess is found, and upper limits are set on the product of the production cross-section and the branching fraction as functions of the mass of the Xb b¯ b b¯ state. The limits are set in the fiducial volume where all muons have pseudorapidity in the range [2.0, 5.0], and the Xb b¯ b b¯ state has rapidity in the range [2.0, 4.5] and transverse momentum less than 15 GeV/c.[Figure not available: see fulltext.].",
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author = "{The LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. 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 F. Archilli and P. d’Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and B. Batsukh and V. Battista and A. Bay and A. Mazurov and A. Petrov and S. Strokov",
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AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

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AU - Alexander, M.

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AU - Alvarez Cartelle, P.

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AU - Amato, S.

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AU - Amhis, Y.

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AU - Anderlini, L.

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AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

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N2 - The ϒ(1S)μ+μ− invariant-mass distribution is investigated for a possible exotic meson state composed of two b quarks and two b¯ quarks, Xb b¯ b b¯. The analysis is based on a data sample of pp collisions recorded with the LHCb detector at centre-of-mass energies s=7, 8 and 13 TeV, corresponding to an integrated luminosity of 6.3 fb−1. No significant excess is found, and upper limits are set on the product of the production cross-section and the branching fraction as functions of the mass of the Xb b¯ b b¯ state. The limits are set in the fiducial volume where all muons have pseudorapidity in the range [2.0, 5.0], and the Xb b¯ b b¯ state has rapidity in the range [2.0, 4.5] and transverse momentum less than 15 GeV/c.[Figure not available: see fulltext.].

AB - The ϒ(1S)μ+μ− invariant-mass distribution is investigated for a possible exotic meson state composed of two b quarks and two b¯ quarks, Xb b¯ b b¯. The analysis is based on a data sample of pp collisions recorded with the LHCb detector at centre-of-mass energies s=7, 8 and 13 TeV, corresponding to an integrated luminosity of 6.3 fb−1. No significant excess is found, and upper limits are set on the product of the production cross-section and the branching fraction as functions of the mass of the Xb b¯ b b¯ state. The limits are set in the fiducial volume where all muons have pseudorapidity in the range [2.0, 5.0], and the Xb b¯ b b¯ state has rapidity in the range [2.0, 4.5] and transverse momentum less than 15 GeV/c.[Figure not available: see fulltext.].

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KW - Exotics

KW - Hadron-Hadron scattering (experiments)

KW - Heavy quark production

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