Measurement of χc1and χc2production with √s = 7 TeV pp collisions at ATLAS

The ATLAS Collaboration

doi:10.1007/JHEP07(2014)154

Measurement of χ_c1and χ_c2production with √s = 7 TeV pp collisions at ATLAS

The ATLAS Collaboration

Research output: Contribution to journal › Article

26 Scopus citations

Abstract

The prompt and non-prompt production cross-sections for the χ_c1and χ_c2charmonium states are measured in pp collisions at √s = 7TeV with the ATLAS detector at the LHC using 4.5 fb⁻¹of integrated luminosity. The χ_cstates are reconstructed through the radiative decay χ_c→ J/ψγ (with J/ψ → μ⁺μ⁻) where photons are reconstructed from γ → e+e− conversions. The production rate of the χ_c2state relative to the χ_c1state is measured for prompt and non-prompt χ_cas a function of J/ψ transverse momentum. The prompt χ_ccross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χ_cdecays. The fractions of χ_c1and χ_c2produced in b-hadron decays are also measured.

Original language	English (US)
Article number	154
Journal	Journal of High Energy Physics
Volume	2014
Issue number	7
DOIs	https://doi.org/10.1007/JHEP07(2014)154
State	Published - Jul 30 2014

Keywords

Hadron-hadron scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP07(2014)154

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The ATLAS Collaboration (2014). Measurement of χ_c1and χ_c2production with √s = 7 TeV pp collisions at ATLAS. Journal of High Energy Physics, 2014(7), [154]. https://doi.org/10.1007/JHEP07(2014)154

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title = "Measurement of χc1and χc2production with √s = 7 TeV pp collisions at ATLAS",

abstract = "The prompt and non-prompt production cross-sections for the χc1and χc2charmonium states are measured in pp collisions at √s = 7TeV with the ATLAS detector at the LHC using 4.5 fb−1of integrated luminosity. The χcstates are reconstructed through the radiative decay χc→ J/ψγ (with J/ψ → μ+μ−) where photons are reconstructed from γ → e+e− conversions. The production rate of the χc2state relative to the χc1state is measured for prompt and non-prompt χcas a function of J/ψ transverse momentum. The prompt χccross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χcdecays. The fractions of χc1and χc2produced in b-hadron decays are also measured.",

keywords = "Hadron-hadron scattering",

author = "{The ATLAS Collaboration} and G. Aad and T. Abajyan and B. Abbott and J. Abdallah and {Abdel Khalek}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and Abouzeid, {O. S.} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, {B. S.} and L. Adamczyk and Adams, {D. L.} and Addy, {T. N.} and J. Adelman and S. Adomeit and T. Adye and S. Aefsky and T. Agatonovic-Jovin and Aguilar-Saavedra, {J. A.} and M. Agustoni and Ahlen, {S. P.} and A. Ahmad and F. Ahmadov and G. Aielli and {\AA}kesson, {T. P.A.} and G. Akimoto and Akimov, {A. V.} and Alam, {M. A.} and J. Albert and S. Albrand and {Alconada Verzini}, {M. J.} and M. Aleksa and Aleksandrov, {I. N.} and F. Alessandria and C. Alexa and L. Alio and J. Alison and Allbrooke, {B. M.M.} and Allison, {L. J.} and A. Aloisio and A. Alonso and E. Cheu and Johns, {K. A.} and Rutherfoord, {John P} and Shupe, {Michael A} and Varnes, {E. W.}",

year = "2014",

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doi = "10.1007/JHEP07(2014)154",

language = "English (US)",

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TY - JOUR

T1 - Measurement of χc1and χc2production with √s = 7 TeV pp collisions at ATLAS

AU - The ATLAS Collaboration

AU - Aad, G.

AU - Abajyan, T.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - Abouzeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Addy, T. N.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Aefsky, S.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alam, M. A.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alessandria, F.

AU - Alexa, C.

AU - Alio, L.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Aloisio, A.

AU - Alonso, A.

AU - Cheu, E.

AU - Johns, K. A.

AU - Rutherfoord, John P

AU - Shupe, Michael A

AU - Varnes, E. W.

PY - 2014/7/30

Y1 - 2014/7/30

N2 - The prompt and non-prompt production cross-sections for the χc1and χc2charmonium states are measured in pp collisions at √s = 7TeV with the ATLAS detector at the LHC using 4.5 fb−1of integrated luminosity. The χcstates are reconstructed through the radiative decay χc→ J/ψγ (with J/ψ → μ+μ−) where photons are reconstructed from γ → e+e− conversions. The production rate of the χc2state relative to the χc1state is measured for prompt and non-prompt χcas a function of J/ψ transverse momentum. The prompt χccross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χcdecays. The fractions of χc1and χc2produced in b-hadron decays are also measured.

AB - The prompt and non-prompt production cross-sections for the χc1and χc2charmonium states are measured in pp collisions at √s = 7TeV with the ATLAS detector at the LHC using 4.5 fb−1of integrated luminosity. The χcstates are reconstructed through the radiative decay χc→ J/ψγ (with J/ψ → μ+μ−) where photons are reconstructed from γ → e+e− conversions. The production rate of the χc2state relative to the χc1state is measured for prompt and non-prompt χcas a function of J/ψ transverse momentum. The prompt χccross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χcdecays. The fractions of χc1and χc2produced in b-hadron decays are also measured.

KW - Hadron-hadron scattering

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U2 - 10.1007/JHEP07(2014)154

DO - 10.1007/JHEP07(2014)154

M3 - Article

AN - SCOPUS:84925745749

VL - 2014

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

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