Study of chi(b) meson production in pp collisions at root s=7 and 8 TeV and observation of the decay chi(b) (3P) -> gamma(3S)gamma

LHCb collaboration

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

Study of chi(b) meson production in pp collisions at root s=7 and 8 TeV and observation of the decay chi(b) (3P) -> gamma(3S)gamma

LHCb collaboration

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

Abstract

A study of chi(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 root s = 7 and 8 TeV. The fraction of gamma(nS) mesons originating from chi(b) decays is measured as a function of the gamma transverse momentum in the rapidity range 2.0 < y(gamma) < 4.5. The radiative transition of the chi(b) (3P) meson to gamma(3S) is observed for the first time. The chi(b)1 (3P) mass is determined to bem chi(b1) (3P) = 10 511.3 +/- 1.7 +/- 2.5MeV/c(2),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
Externally published	Yes

Keywords

UPSILON PRODUCTION
PROMPT CHI(C)
J-PSI
B-S(0)
RATIO
B-0

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@article{15cea3c288294c5dba1f0aaeaaeaa47d,

title = "Study of chi(b) meson production in pp collisions at root s=7 and 8 TeV and observation of the decay chi(b) (3P) -> gamma(3S)gamma",

abstract = "A study of chi(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 root s = 7 and 8 TeV. The fraction of gamma(nS) mesons originating from chi(b) decays is measured as a function of the gamma transverse momentum in the rapidity range 2.0 < y(gamma) < 4.5. The radiative transition of the chi(b) (3P) meson to gamma(3S) is observed for the first time. The chi(b)1 (3P) mass is determined to bem chi(b1) (3P) = 10 511.3 +/- 1.7 +/- 2.5MeV/c(2),where the first uncertainty is statistical and the second is systematic.",

keywords = "UPSILON PRODUCTION, PROMPT CHI(C), J-PSI, B-S(0), RATIO, B-0",

author = "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 P.A. Cartelle and A.A. Alves 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 J.E. Andrews and R.B. Appleby and O.A. Gutierrez and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and J.J. Back and A. Badalov and W. Baldini and R.J. Barlow and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and \{van den Brand\}, J. and \{LHCb collaboration\}",

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",

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TY - JOUR

T1 - Study of chi(b) meson production in pp collisions at root s=7 and 8 TeV and observation of the decay chi(b) (3P) -> gamma(3S)gamma

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 - Cartelle, P.A.

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 - Gutierrez, O.A.

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 - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - van den Brand, J.

AU - LHCb collaboration

PY - 2014/10/8

Y1 - 2014/10/8

N2 - A study of chi(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 root s = 7 and 8 TeV. The fraction of gamma(nS) mesons originating from chi(b) decays is measured as a function of the gamma transverse momentum in the rapidity range 2.0 < y(gamma) < 4.5. The radiative transition of the chi(b) (3P) meson to gamma(3S) is observed for the first time. The chi(b)1 (3P) mass is determined to bem chi(b1) (3P) = 10 511.3 +/- 1.7 +/- 2.5MeV/c(2),where the first uncertainty is statistical and the second is systematic.

AB - A study of chi(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 root s = 7 and 8 TeV. The fraction of gamma(nS) mesons originating from chi(b) decays is measured as a function of the gamma transverse momentum in the rapidity range 2.0 < y(gamma) < 4.5. The radiative transition of the chi(b) (3P) meson to gamma(3S) is observed for the first time. The chi(b)1 (3P) mass is determined to bem chi(b1) (3P) = 10 511.3 +/- 1.7 +/- 2.5MeV/c(2),where the first uncertainty is statistical and the second is systematic.

KW - UPSILON PRODUCTION

KW - PROMPT CHI(C)

KW - J-PSI

KW - B-S(0)

KW - RATIO

KW - B-0

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

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

M3 - Article

SN - 1434-6044

VL - 74

JO - European Physical Journal C

JF - European Physical Journal C

IS - 10

M1 - 3092

ER -

Study of chi(b) meson production in pp collisions at root s=7 and 8 TeV and observation of the decay chi(b) (3P) -> gamma(3S)gamma

Abstract

Keywords

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