Measurement of the fraction of Gamma(1S) originating from chi(b)(1P) decays in pp collisions at root s=7 TeV

R Aaij; J.F.J. van den Brand; F. Dettori; T.J. Ketel; R. Koopman; R.W. Lambert; H.G. Raven; M. Schiller; S. Tolk; Collaboration LHCb

doi:10.1007/JHEP11(2012)031

Measurement of the fraction of Gamma(1S) originating from chi(b)(1P) decays in pp collisions at root s=7 TeV

R Aaij, J.F.J. van den Brand, F. Dettori, T.J. Ketel, R. Koopman, R.W. Lambert, H.G. Raven, M. Schiller, S. Tolk, Collaboration LHCb

(Astro)-Particles Physics

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

Abstract

The production of χ<inf>b</inf>(1P) mesons in pp collisions at a centre-of-mass energy of 7TeV is studied using 32 pb⁻¹ of data collected with the LHCb detector. The χ<inf>b</inf>(1P) mesons are reconstructed in the decay mode χ<inf>b</inf>(1P) → ϒ (1S) γ → μ⁺μ⁻γ. The fraction of ϒ (1S) originating from χb(1P) decays in the ϒ (1S) transverse momentum range 6 < p<inf>T</inf>^ϒ(1S) < 15GeV/c and rapidity range 2.0 < y^ϒ(1S) < 4.5 is measured to be (20.7 ± 5.7 ± 2.1^+2.7<inf>−5.4</inf>)%, where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown ϒ(1S) and χ<inf>b</inf>(1P) polarizations.

Original language	English
Article number	031
Journal	Journal of High Energy Physics
Issue number	11
DOIs	https://doi.org/10.1007/JHEP11(2012)031
Publication status	Published - 2012

UN SDGs

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

Access to Document

10.1007/JHEP11(2012)031

Handle.net

Persistent link

Cite this

@article{faf1452be19a4a7b8f3f86681c7d8026,

title = "Measurement of the fraction of Gamma(1S) originating from chi(b)(1P) decays in pp collisions at root s=7 TeV",

abstract = "The production of χb(1P) mesons in pp collisions at a centre-of-mass energy of 7TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P) mesons are reconstructed in the decay mode χb(1P) → ϒ (1S) γ → μ+μ−γ. The fraction of ϒ (1S) originating from χb(1P) decays in the ϒ (1S) transverse momentum range 6 < pTϒ(1S) < 15GeV/c and rapidity range 2.0 < yϒ(1S) < 4.5 is measured to be (20.7 ± 5.7 ± 2.1+2.7−5.4)%, where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown ϒ(1S) and χb(1P) polarizations.",

author = "R Aaij and {van den Brand}, J.F.J. and F. Dettori and T.J. Ketel and R. Koopman and R.W. Lambert and H.G. Raven and M. Schiller and S. Tolk and Collaboration LHCb",

year = "2012",

doi = "10.1007/JHEP11(2012)031",

language = "English",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "11",

}

TY - JOUR

T1 - Measurement of the fraction of Gamma(1S) originating from chi(b)(1P) decays in pp collisions at root s=7 TeV

AU - Aaij, R

AU - van den Brand, J.F.J.

AU - Dettori, F.

AU - Ketel, T.J.

AU - Koopman, R.

AU - Lambert, R.W.

AU - Raven, H.G.

AU - Schiller, M.

AU - Tolk, S.

AU - LHCb, Collaboration

PY - 2012

Y1 - 2012

N2 - The production of χb(1P) mesons in pp collisions at a centre-of-mass energy of 7TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P) mesons are reconstructed in the decay mode χb(1P) → ϒ (1S) γ → μ+μ−γ. The fraction of ϒ (1S) originating from χb(1P) decays in the ϒ (1S) transverse momentum range 6 < pTϒ(1S) < 15GeV/c and rapidity range 2.0 < yϒ(1S) < 4.5 is measured to be (20.7 ± 5.7 ± 2.1+2.7−5.4)%, where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown ϒ(1S) and χb(1P) polarizations.

AB - The production of χb(1P) mesons in pp collisions at a centre-of-mass energy of 7TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P) mesons are reconstructed in the decay mode χb(1P) → ϒ (1S) γ → μ+μ−γ. The fraction of ϒ (1S) originating from χb(1P) decays in the ϒ (1S) transverse momentum range 6 < pTϒ(1S) < 15GeV/c and rapidity range 2.0 < yϒ(1S) < 4.5 is measured to be (20.7 ± 5.7 ± 2.1+2.7−5.4)%, where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown ϒ(1S) and χb(1P) polarizations.

U2 - 10.1007/JHEP11(2012)031

DO - 10.1007/JHEP11(2012)031

M3 - Article

SN - 1126-6708

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

M1 - 031

ER -

Measurement of the fraction of Gamma(1S) originating from chi(b)(1P) decays in pp collisions at root s=7 TeV

Abstract

UN SDGs

Access to Document

Handle.net

Fingerprint

Cite this