Measurement of the χb(3P) mass and of the relative rate of χb1(1P) and χb2(1P) production

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; C. Baesso; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; 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:10.1007/JHEP10(2014)088

Measurement of the χ_b(3P) mass and of the relative rate of χ_b1(1P) and χ_b2(1P) production

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, C. Baesso, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, 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

The production of χ_b mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of √s = 7 and 8TeV and corresponding to an integrated luminosity of 3.0 fb⁻¹. The χ_b mesons are identified through their decays to ϒ(1S)γ and ϒ(2S)γ using photons that converted to e⁺e⁻pairs in the detector. The relative prompt production rate of χ_b1(1P) and χ_b2(1P) mesons is measured as a function of the ϒ(1S) transverse momentum in the χ_brapidity range 2.0 < y < 4.5. A precise measurement of the χ_b(3P) mass is also performed. Assuming a mass splitting between the χ_b1(3P) and the χ_b2(3P) states of 10.5 MeV/c², the measured mass of the χ_b1(3P) meson is m(χ_b1(3P)) = 10515.7^+2.2_−3.9(stat)^+1.5 _−2.1(syst)MeV/c².

Original language	English
Article number	88
Number of pages	22
Journal	Journal of High Energy Physics
Volume	2014
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2014)088
Publication status	Published - 14 Oct 2014

Keywords

Flavor physics
Hadron-Hadron Scattering
Quarkonium

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Cite this

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). Measurement of the χ_b(3P) mass and of the relative rate of χ_b1(1P) and χ_b2(1P) production. Journal of High Energy Physics, 2014(10), Article 88. https://doi.org/10.1007/JHEP10(2014)088

@article{3d6001b6d2a147cea6d55b9ed0677aa2,

title = "Measurement of the χb(3P) mass and of the relative rate of χb1(1P) and χb2(1P) production",

abstract = "The production of χb mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of √s = 7 and 8TeV and corresponding to an integrated luminosity of 3.0 fb−1. The χb mesons are identified through their decays to ϒ(1S)γ and ϒ(2S)γ using photons that converted to e+e− pairs in the detector. The relative prompt production rate of χb1(1P) and χb2(1P) mesons is measured as a function of the ϒ(1S) transverse momentum in the χb rapidity range 2.0 < y < 4.5. A precise measurement of the χb(3P) mass is also performed. Assuming a mass splitting between the χb1(3P) and the χb2(3P) states of 10.5 MeV/c2, the measured mass of the χb1(3P) meson is m(χb1(3P)) = 10515.7+2.2−3.9(stat)+1.5 −2.1(syst)MeV/c2.",

keywords = "Flavor physics, Hadron-Hadron Scattering, Quarkonium",

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 C. Baesso and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk 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 = "14",

doi = "10.1007/JHEP10(2014)088",

language = "English",

volume = "2014",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

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, Baesso, C, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, 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, 'Measurement of the χ_b(3P) mass and of the relative rate of χ_b1(1P) and χ_b2(1P) production', Journal of High Energy Physics, vol. 2014, no. 10, 88. https://doi.org/10.1007/JHEP10(2014)088

TY - JOUR

T1 - Measurement of the χb(3P) mass and of the relative rate of χb1(1P) and χb2(1P) production

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 - Baesso, C.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

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 - 2014/10/14

Y1 - 2014/10/14

N2 - The production of χb mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of √s = 7 and 8TeV and corresponding to an integrated luminosity of 3.0 fb−1. The χb mesons are identified through their decays to ϒ(1S)γ and ϒ(2S)γ using photons that converted to e+e− pairs in the detector. The relative prompt production rate of χb1(1P) and χb2(1P) mesons is measured as a function of the ϒ(1S) transverse momentum in the χb rapidity range 2.0 < y < 4.5. A precise measurement of the χb(3P) mass is also performed. Assuming a mass splitting between the χb1(3P) and the χb2(3P) states of 10.5 MeV/c2, the measured mass of the χb1(3P) meson is m(χb1(3P)) = 10515.7+2.2−3.9(stat)+1.5 −2.1(syst)MeV/c2.

AB - The production of χb mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of √s = 7 and 8TeV and corresponding to an integrated luminosity of 3.0 fb−1. The χb mesons are identified through their decays to ϒ(1S)γ and ϒ(2S)γ using photons that converted to e+e− pairs in the detector. The relative prompt production rate of χb1(1P) and χb2(1P) mesons is measured as a function of the ϒ(1S) transverse momentum in the χb rapidity range 2.0 < y < 4.5. A precise measurement of the χb(3P) mass is also performed. Assuming a mass splitting between the χb1(3P) and the χb2(3P) states of 10.5 MeV/c2, the measured mass of the χb1(3P) meson is m(χb1(3P)) = 10515.7+2.2−3.9(stat)+1.5 −2.1(syst)MeV/c2.

KW - Flavor physics

KW - Hadron-Hadron Scattering

KW - Quarkonium

UR - http://www.scopus.com/inward/record.url?scp=84959857270&partnerID=8YFLogxK

U2 - 10.1007/JHEP10(2014)088

DO - 10.1007/JHEP10(2014)088

M3 - Article

AN - SCOPUS:84959857270

SN - 1126-6708

VL - 2014

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 88

ER -