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

The Lhcb Collaboration

doi:10.1007/JHEP10(2018)086

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

The Lhcb Collaboration

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

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, X_b _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 X_b _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 X_b _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.].

Original language	English
Article number	86
Pages (from-to)	1-22
Number of pages	22
Journal	Journal of High Energy Physics
Volume	2018
Issue number	10
Early online date	12 Oct 2018
DOIs	https://doi.org/10.1007/JHEP10(2018)086
Publication status	Published - Oct 2018

Funding

Open Access, Copyright CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MinES and FASO (Russia); MinECo (Spain);

Funders	Funder number
Not added	ST/J004332/1, ST/N000250/1, ST/N000447/1, 1681016, ST/K003410/1, 1796908, 1708182, ST/N000234/1, ST/N000455/1, ST/L003163/1, ST/N000242/1
AvH Foundation
CNRS/IN2P3
FASO
Herchel Smith Fund
Marie Sklo dowska-Curie Actions
MinES
OCEVU
Yandex LLC
RSF Social Finance
CERN
College of Arts and Sciences, University of Nebraska-Lincoln
Engineering Research Centers
Science and Technology Facilities Council	LHCb, ST/N000463/1, LHCb Upgrades
Leverhulme Trust
Royal Society
English-Speaking Union
European Commission
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	166208
National Natural Science Foundation of China
Russian Foundation for Basic Research
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Bundesministerium für Bildung und Forschung
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Generalitat Valenciana
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science and Technology
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Ministerstwo Nauki i Szkolnictwa Wyższego
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Financiadora de Estudos e Projetos
Région Auvergne-Rhône-Alpes
Recruitment Program of Global Experts

Keywords

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/JHEP10(2018)086

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Cite this

@article{28aaf8bed8b14a06b63b7ca7e49cdce1,

title = "Search for beautiful tetraquarks in the ϒ(1S)μ + μ − invariant-mass spectrum",

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.].",

keywords = "B physics, Exotics, Hadron-Hadron scattering (experiments), Heavy quark production",

author = "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{\textquoteright}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 {De Bruyn}, K. and M. Merk and G. Raven and M. Schiller and V. Syropoulos and S. Tolk and {The Lhcb Collaboration}",

year = "2018",

month = oct,

doi = "10.1007/JHEP10(2018)086",

language = "English",

volume = "2018",

pages = "1--22",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "10",

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TY - JOUR

T1 - Search for beautiful tetraquarks in the ϒ(1S)μ + μ − invariant-mass spectrum

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

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 - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - De Bruyn, K.

AU - Merk, M.

AU - Raven, G.

AU - Schiller, M.

AU - Syropoulos, V.

AU - Tolk, S.

AU - The Lhcb Collaboration

PY - 2018/10

Y1 - 2018/10

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.].

KW - B physics

KW - Exotics

KW - Hadron-Hadron scattering (experiments)

KW - Heavy quark production

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U2 - 10.1007/JHEP10(2018)086

DO - 10.1007/JHEP10(2018)086

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JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

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