Study of Xb meson production in pp collisions at √s=7 and 8 TeV and observation of the decay Xb(3P) → ϒ (3S) γ

LHCb Collaboration; R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; J. Anderson; R. Andreassen; M. Andreotti; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; A. Badalov; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; S. Bifani; N. Farley; P. Griffith; P. Ilten; I. R. Kenyon; C. Lazzeroni; A. Mazurov; J. McCarthy; C. J. Parkinson; L. Pescatore; D. Popov; N. K. Watson

doi:10.1140/epjc/s10052-014-3092-z

Study of X_bmeson production in pp collisions at √s=7 and 8 TeV and observation of the decay X_b(3P) → ϒ (3S) γ

LHCb Collaboration, R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. AndersonR. Andreassen, M. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, S. Bifani, N. Farley, P. Griffith, P. Ilten, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, C. J. Parkinson, L. Pescatore, D. Popov, N. K. Watson

Physics and Astronomy

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Abstract

A study of X_b meson production at LHCb is performed on proton–proton collision data, corresponding to 3.0 fb^-1 of integrated luminosity collected at centre-of-mass energies √s= 7 and 8 TeV. The fraction of Υ (nS) mesons originating from χ_b decays is measured as a function of the ϒ transverse momentum in the rapidity range 2.0 < y^ϒ< 4.5. The radiative transition of the χ_b (3P) meson to Υ (3S) is observed for the first time. The χ_b1 (3P) mass is determined to be m_χb1 _(3P) = 10 511.3 ± 1.7 ± 2.5 MeV/c², where the first uncertainty is statistical and the second is systematic.

Original language	English
Article number	3092
Number of pages	13
Journal	European Physical Journal C
Volume	74
Issue number	10
DOIs	https://doi.org/10.1140/epjc/s10052-014-3092-z
Publication status	Published - 8 Oct 2014

Keywords

Transverse momentum
Invariant mass
Systematic uncertainty
Radiative decay
Electromagnetic calorimeter

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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LHCb Collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., ... Watson, N. K. (2014). Study of X_bmeson production in pp collisions at √s=7 and 8 TeV and observation of the decay X_b(3P) → ϒ (3S) γ. European Physical Journal C, 74(10), Article 3092. https://doi.org/10.1140/epjc/s10052-014-3092-z

@article{743fadf5f77a422da92560e4243c4e62,

title = "Study of Xb meson production in pp collisions at √s=7 and 8 TeV and observation of the decay Xb(3P) → ϒ (3S) γ",

abstract = "A study of Xb meson production at LHCb is performed on proton–proton collision data, corresponding to 3.0 fb-1 of integrated luminosity collected at centre-of-mass energies √s= 7 and 8 TeV. The fraction of Υ (nS) mesons originating from χb decays is measured as a function of the ϒ transverse momentum in the rapidity range 2.0 < yϒ < 4.5. The radiative transition of the χb (3P) meson to Υ (3S) is observed for the first time. The χb1 (3P) mass is determined to be mχb1 (3P) = 10 511.3 ± 1.7 ± 2.5 MeV/c2, where the first uncertainty is statistical and the second is systematic.",

keywords = "Transverse momentum, Invariant mass, Systematic uncertainty, Radiative decay, Electromagnetic calorimeter",

author = "{LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander 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 J. Anderson and R. Andreassen and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and S. Bifani and N. Farley and P. Griffith and P. Ilten and Kenyon, {I. R.} and C. Lazzeroni and A. Mazurov and J. McCarthy and Parkinson, {C. J.} and L. Pescatore and D. Popov and Watson, {N. K.}",

year = "2014",

month = oct,

day = "8",

doi = "10.1140/epjc/s10052-014-3092-z",

language = "English",

volume = "74",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer",

number = "10",

}

LHCb Collaboration, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreassen, R, Andreotti, M, Andrews, JE, Appleby, RB, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bifani, S, Farley, N, Griffith, P, Ilten, P, Kenyon, IR, Lazzeroni, C, Mazurov, A, McCarthy, J, Parkinson, CJ, Pescatore, L, Popov, D & Watson, NK 2014, 'Study of X_bmeson production in pp collisions at √s=7 and 8 TeV and observation of the decay X_b(3P) → ϒ (3S) γ', European Physical Journal C, vol. 74, no. 10, 3092. https://doi.org/10.1140/epjc/s10052-014-3092-z

TY - JOUR

T1 - Study of Xb meson production in pp collisions at √s=7 and 8 TeV and observation of the decay Xb(3P) → ϒ (3S) γ

AU - LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

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 - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bifani, S.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Kenyon, I. R.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - McCarthy, J.

AU - Parkinson, C. J.

AU - Pescatore, L.

AU - Popov, D.

AU - Watson, N. K.

PY - 2014/10/8

Y1 - 2014/10/8

N2 - A study of Xb meson production at LHCb is performed on proton–proton collision data, corresponding to 3.0 fb-1 of integrated luminosity collected at centre-of-mass energies √s= 7 and 8 TeV. The fraction of Υ (nS) mesons originating from χb decays is measured as a function of the ϒ transverse momentum in the rapidity range 2.0 < yϒ < 4.5. The radiative transition of the χb (3P) meson to Υ (3S) is observed for the first time. The χb1 (3P) mass is determined to be mχb1 (3P) = 10 511.3 ± 1.7 ± 2.5 MeV/c2, where the first uncertainty is statistical and the second is systematic.

AB - A study of Xb meson production at LHCb is performed on proton–proton collision data, corresponding to 3.0 fb-1 of integrated luminosity collected at centre-of-mass energies √s= 7 and 8 TeV. The fraction of Υ (nS) mesons originating from χb decays is measured as a function of the ϒ transverse momentum in the rapidity range 2.0 < yϒ < 4.5. The radiative transition of the χb (3P) meson to Υ (3S) is observed for the first time. The χb1 (3P) mass is determined to be mχb1 (3P) = 10 511.3 ± 1.7 ± 2.5 MeV/c2, where the first uncertainty is statistical and the second is systematic.

KW - Transverse momentum

KW - Invariant mass

KW - Systematic uncertainty

KW - Radiative decay

KW - Electromagnetic calorimeter

UR - http://www.scopus.com/inward/record.url?scp=84919914176&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-014-3092-z

DO - 10.1140/epjc/s10052-014-3092-z

M3 - Article

AN - SCOPUS:84919914176

SN - 1434-6044

VL - 74

JO - European Physical Journal C

JF - European Physical Journal C

IS - 10

M1 - 3092

ER -

Study of Xb meson production in pp collisions at √s=7 and 8 TeV and observation of the decay Xb(3P) → ϒ (3S) γ