Search for excited Bc        + states

R. Aaij; B. Adeva; M. Adinolfi; Z. Ajaltouni; S. Akar; J. Albrecht; 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; S. Baker; V. Balagura; W. Baldini; S. Bifani; R. Calladine; G. Chatzikonstantinidis; N. Farley; P. Ilten; C. Lazzeroni; A. Mazurov; A. Sergi; N. K. Watson; T. Williams; K. A. Zarebski; LHCb Collaboration

doi:10.1007/JHEP01(2018)138

Search for excited B_c ⁺ states

R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, 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. AndreottiJ. 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, S. Baker, V. Balagura, W. Baldini, S. Bifani, R. Calladine, G. Chatzikonstantinidis, N. Farley, P. Ilten, C. Lazzeroni, A. Mazurov, A. Sergi, N. K. Watson, T. Williams, K. A. Zarebski, LHCb Collaboration

^*Corresponding author for this work

Physics and Astronomy

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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 - 29 Jan 2018

Keywords

B physics
Hadron-Hadron scattering (experiments)
Spectroscopy

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1007/JHEP01(2018)138Licence: Creative Commons: Attribution (CC BY)

Aaij_et_al_Search_for_excited_Journal_of_High_Energy_Physics_2018
Published in Journal of High Energy Physics on 29/01/2018 DOI: 10.1007/JHEP01(2018)138
Final published version, 544 KBLicence: Creative Commons: Attribution (CC BY)

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Cite this

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., 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., ... 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{9ecce2e690b44968baa1cd0a56425a19,

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 M. Adinolfi and Z. Ajaltouni and S. Akar 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 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 S. Baker and V. Balagura and W. Baldini and S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Farley and P. Ilten and C. Lazzeroni and A. Mazurov and A. Sergi and Watson, {N. K.} and T. Williams and Zarebski, {K. A.} and {LHCb Collaboration}",

year = "2018",

month = jan,

day = "29",

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

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "1",

}

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, 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, Baker, S, Balagura, V, Baldini, W, Bifani, S, Calladine, R, Chatzikonstantinidis, G, Farley, N, Ilten, P , Lazzeroni, C, Mazurov, A, Sergi, A, Watson, NK, Williams, T, Zarebski, KA & 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 - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

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 - 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 - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Farley, N.

AU - Ilten, P.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - Sergi, A.

AU - Watson, N. K.

AU - Williams, T.

AU - Zarebski, K. A.

AU - LHCb Collaboration

PY - 2018/1/29

Y1 - 2018/1/29

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 - http://www.scopus.com/inward/record.url?scp=85041861901&partnerID=8YFLogxK

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 -

Search for excited Bc + states