Search for excited Bc        + states

R. Aaij; B. Adeva; Z. Ajaltouni; S. Akar; F. Alessio; M. Alexander; A. Alfonso Albero; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; G. Andreassi; M. Andreotti; J. E. Andrews; R. B. Appleby; F. Archilli; P. d’Argent; J. Arnau Romeu; A. Artamonov; M. Artuso; E. Aslanides; M. Atzeni; G. Auriemma; M. Baalouch; I. Babuschkin; S. Bachmann; J. J. Back; A. Badalov; C. Baesso; K. Carvalho Akiba; V. Coco; K. De Bruyn; M. Ferro-Luzzi; T. Ketel; M. Merk; C. J.G. Onderwater; G. Raven; M. Schiller; N. Serra; B. Storaci; V. Syropoulos; J. van Tilburg; S. Tolk; P. Tsopelas; N. Tuning; The LHCb collaboration

doi:10.1007/JHEP01(2018)138

Search for excited B_c ⁺ states

R. Aaij
, B. Adeva
, Z. Ajaltouni
, S. Akar
, F. Alessio
, M. Alexander
, A. Alfonso Albero
, S. Ali
, G. Alkhazov
, P. Alvarez Cartelle
, A. A. Alves
, S. Amato
, S. Amerio
, Y. Amhis
, L. An^*
, L. Anderlini
, G. Andreassi
, M. Andreotti
, J. E. Andrews
, R. B. Appleby

F. Archilli, P. d’Argent, J. Arnau Romeu, A. Artamonov, M. Artuso, E. Aslanides, M. Atzeni, G. Auriemma, M. Baalouch, I. Babuschkin, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, K. Carvalho Akiba, V. Coco, K. De Bruyn, M. Ferro-Luzzi, T. Ketel, M. Merk, C. J.G. Onderwater, G. Raven, M. Schiller, N. Serra, B. Storaci, V. Syropoulos, J. van Tilburg, S. Tolk, P. Tsopelas, N. Tuning, The LHCb collaboration

^*Corresponding author for this work

(Astro)-Particles Physics

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

Abstract

A search is performed in the invariant mass spectrum of the B_c ⁺π⁺π⁻ system for the excited B_c ⁺ states B_c(2¹S₀)⁺ and B_c(2³S₁)⁺ using a data sample of pp collisions collected by the LHCb experiment at the centre-of-mass energy of s=8 TeV, corresponding to an integrated luminosity of 2 fb⁻¹. No evidence is seen for either state. Upper limits on the ratios of the production cross-sections of the B_c(2¹S₀)⁺ and B_c(2³S₁)⁺ states times the branching fractions of B_c(2¹S₀)⁺ → B_c ⁺π⁺π⁻ and B_c(2³S₁)⁺ → B_c ^* ⁺π⁺π⁻ over the production cross-section of the B_c ⁺ state are given as a function of their masses. They are found to be between 0.02 and 0.14 at 95% confidence level for B_c(2¹S₀)⁺ and B_c(2³S₁)⁺ in the mass ranges [6830, 6890] MeV/c² and [6795, 6890] MeV/c², respectively.[Figure not available: see fulltext.].

Original language	English
Article number	138
Journal	Journal of High Energy Physics
Volume	2018
Issue number	1
DOIs	https://doi.org/10.1007/JHEP01(2018)138
Publication status	Published - 1 Jan 2018

Funding

Open Access, Copyright CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3.

Funders	Funder number
Agence Nationale de la Recherche
National Academy of Sciences of Ukraine
Federal Agency for Scientific Organizations
Narodowe Centrum Nauki
OCEVU
National Science Foundation
Institut national de physique nucléaire et de physique des particules
H2020 Marie Skłodowska-Curie Actions
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministry of Science and Technology, Taiwan
Herchel Smith Fund
Instituto Nazionale di Fisica Nucleare
Financiadora de Estudos e Projetos
Centre National de la Recherche Scientifique
Bundesministerium für Bildung und Forschung
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Deutsche Forschungsgemeinschaft
European Commission
Région Auvergne-Rhône-Alpes
Russian Foundation for Basic Research
English-Speaking Union
Yandex LLC
MinES
Royal Society
Sociedad Española de Reumatología
European Research Council
EPLANET
Ministerstwo Nauki i Szkolnictwa Wyższego
Generalitat Valenciana
CERN
Alexander von Humboldt-Stiftung
Lev-erhulme Trust
National Natural Science Foundation of China
Science and Technology Facilities Council	ST/N000250/1, ST/H006737/1, ST/N000331/1, LHCb Upgrades, GRIDPP, ST/J004332/1, 1641747, 1681016, ST/K003410/1, 1796908, LHCb, ST/N000463/1, ST/N000242/1
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	166208

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

B physics
Hadron-Hadron scattering (experiments)
Spectroscopy

Access to Document

10.1007/JHEP01(2018)138

Persistent URL (handle)

Persistent link

Cite this

Aaij, R., Adeva, B., Ajaltouni, Z., Akar, S., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., ... The LHCb collaboration (2018). Search for excited B_c ⁺ states. Journal of High Energy Physics, 2018(1), Article 138. https://doi.org/10.1007/JHEP01(2018)138

@article{4113cdb1a15d410aa283bfe5ba9bb6f9,

title = "Search for excited Bc + states",

abstract = "A search is performed in the invariant mass spectrum of the Bc +π+π− system for the excited Bc + states Bc(21S0)+ and Bc(23S1)+ using a data sample of pp collisions collected by the LHCb experiment at the centre-of-mass energy of s=8 TeV, corresponding to an integrated luminosity of 2 fb−1. No evidence is seen for either state. Upper limits on the ratios of the production cross-sections of the Bc(21S0)+ and Bc(23S1)+ states times the branching fractions of Bc(21S0)+ → Bc +π+π− and Bc(23S1)+ → Bc * +π+π− over the production cross-section of the Bc + state are given as a function of their masses. They are found to be between 0.02 and 0.14 at 95\% confidence level for Bc(21S0)+ and Bc(23S1)+ in the mass ranges [6830, 6890] MeV/c2 and [6795, 6890] MeV/c2, respectively.[Figure not available: see fulltext.].",

keywords = "B physics, Hadron-Hadron scattering (experiments), Spectroscopy",

author = "R. Aaij and B. Adeva and Z. Ajaltouni and S. Akar 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 E. Aslanides and M. Atzeni and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, \{J. J.\} and A. Badalov and C. Baesso and \{Carvalho Akiba\}, K. and V. Coco and \{De Bruyn\}, K. and M. Ferro-Luzzi and T. Ketel and M. Merk and Onderwater, \{C. J.G.\} and G. Raven and M. Schiller and N. Serra and B. Storaci and V. Syropoulos and \{van Tilburg\}, J. and S. Tolk and P. Tsopelas and N. Tuning and \{The LHCb collaboration\}",

year = "2018",

month = jan,

day = "1",

doi = "10.1007/JHEP01(2018)138",

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "1",

}

Aaij, R, Adeva, B, Ajaltouni, Z, Akar, S, Alessio, F, Alexander, M, Alfonso Albero, A, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d’Argent, P, Arnau Romeu, J, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Carvalho Akiba, K, Coco, V, De Bruyn, K, Ferro-Luzzi, M, Ketel, T, Merk, M, Onderwater, CJG, Raven, G, Schiller, M, Serra, N, Storaci, B, Syropoulos, V, van Tilburg, J, Tolk, S, Tsopelas, P, Tuning, N & The LHCb collaboration 2018, 'Search for excited B_c ⁺ states', Journal of High Energy Physics, vol. 2018, no. 1, 138. https://doi.org/10.1007/JHEP01(2018)138

TY - JOUR

T1 - Search for excited Bc + states

AU - Aaij, R.

AU - Adeva, B.

AU - Ajaltouni, Z.

AU - Akar, S.

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 - Aslanides, E.

AU - Atzeni, M.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Carvalho Akiba, K.

AU - Coco, V.

AU - De Bruyn, K.

AU - Ferro-Luzzi, M.

AU - Ketel, T.

AU - Merk, M.

AU - Onderwater, C. J.G.

AU - Raven, G.

AU - Schiller, M.

AU - Serra, N.

AU - Storaci, B.

AU - Syropoulos, V.

AU - van Tilburg, J.

AU - Tolk, S.

AU - Tsopelas, P.

AU - Tuning, N.

AU - The LHCb collaboration

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A search is performed in the invariant mass spectrum of the Bc +π+π− system for the excited Bc + states Bc(21S0)+ and Bc(23S1)+ using a data sample of pp collisions collected by the LHCb experiment at the centre-of-mass energy of s=8 TeV, corresponding to an integrated luminosity of 2 fb−1. No evidence is seen for either state. Upper limits on the ratios of the production cross-sections of the Bc(21S0)+ and Bc(23S1)+ states times the branching fractions of Bc(21S0)+ → Bc +π+π− and Bc(23S1)+ → Bc * +π+π− over the production cross-section of the Bc + state are given as a function of their masses. They are found to be between 0.02 and 0.14 at 95% confidence level for Bc(21S0)+ and Bc(23S1)+ in the mass ranges [6830, 6890] MeV/c2 and [6795, 6890] MeV/c2, respectively.[Figure not available: see fulltext.].

AB - A search is performed in the invariant mass spectrum of the Bc +π+π− system for the excited Bc + states Bc(21S0)+ and Bc(23S1)+ using a data sample of pp collisions collected by the LHCb experiment at the centre-of-mass energy of s=8 TeV, corresponding to an integrated luminosity of 2 fb−1. No evidence is seen for either state. Upper limits on the ratios of the production cross-sections of the Bc(21S0)+ and Bc(23S1)+ states times the branching fractions of Bc(21S0)+ → Bc +π+π− and Bc(23S1)+ → Bc * +π+π− over the production cross-section of the Bc + state are given as a function of their masses. They are found to be between 0.02 and 0.14 at 95% confidence level for Bc(21S0)+ and Bc(23S1)+ in the mass ranges [6830, 6890] MeV/c2 and [6795, 6890] MeV/c2, respectively.[Figure not available: see fulltext.].

KW - B physics

KW - Hadron-Hadron scattering (experiments)

KW - Spectroscopy

UR - https://www.scopus.com/pages/publications/85041861901

UR - https://www.scopus.com/pages/publications/85041861901#tab=citedBy

U2 - 10.1007/JHEP01(2018)138

DO - 10.1007/JHEP01(2018)138

M3 - Article

AN - SCOPUS:85041861901

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 1

M1 - 138

ER -