Home > Research > Publications & Outputs > Measurements of ψ(2S) and X(3872) → J/ψ π+π- pr...

Research

Associated organisational unit

Electronic data

  • 2016beattiephd

    Final published version, 15.3 MB, PDF document

    Available under license: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

Keywords

View graph of relations

Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector

Research output: Thesis › Doctoral Thesis

Published

Standard

Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector. / Beattie, Michael.
Lancaster University, 2016. 213 p.

Research output: Thesis › Doctoral Thesis

Harvard

Beattie, M 2016, 'Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector', PhD, Lancaster University.

APA

Beattie, M. (2016). Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector. [Doctoral Thesis, Lancaster University]. Lancaster University.

Vancouver

Beattie M. Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector. Lancaster University, 2016. 213 p.

Author

Beattie, Michael. / Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector. Lancaster University, 2016. 213 p.

Bibtex

@phdthesis{cbff2c789ada4e07ac76c8a81c4a9ed8,
title = "Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector",
abstract = "Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and ψ(2S), in the decay mode J/ψπ+π −, measured using 11.4 fb−1 of pp collisions at √ s = 8 TeV by the ATLAS detector at the LHC. The ratio of cross sections X(3872)/ψ(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and ψ(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and ψ(2S) production gives RB = Br(B→X(3872) + any)Br(X(3872)→J/ψπ+π−) Br(B→ψ(2S) + any)Br(ψ(2S)→J/ψπ+π−) = (3.95 ± 0.32(stat) ± 0.08(sys))%, while separating short and long-lived contributions, assuming that the short-lived component is due to Bc decays, gives RB = (3.57±0.33(stat)±0.11(sys))%, with the fraction of non-prompt X(3872) produced via Bc decays for pT (X(3872)) > 10 GeV being (25 ± 13(stat) ± 2(sys) ± 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and ψ(2S) decays are also measured and compared to expectations.",
keywords = "B physics , Quarkonium, X(3872), psi(2S)",
author = "Michael Beattie",
year = "2016",
language = "English",
publisher = "Lancaster University",
school = "Lancaster University",

}

RIS

TY - BOOK

T1 - Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector

AU - Beattie, Michael

PY - 2016

Y1 - 2016

N2 - Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and ψ(2S), in the decay mode J/ψπ+π −, measured using 11.4 fb−1 of pp collisions at √ s = 8 TeV by the ATLAS detector at the LHC. The ratio of cross sections X(3872)/ψ(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and ψ(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and ψ(2S) production gives RB = Br(B→X(3872) + any)Br(X(3872)→J/ψπ+π−) Br(B→ψ(2S) + any)Br(ψ(2S)→J/ψπ+π−) = (3.95 ± 0.32(stat) ± 0.08(sys))%, while separating short and long-lived contributions, assuming that the short-lived component is due to Bc decays, gives RB = (3.57±0.33(stat)±0.11(sys))%, with the fraction of non-prompt X(3872) produced via Bc decays for pT (X(3872)) > 10 GeV being (25 ± 13(stat) ± 2(sys) ± 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and ψ(2S) decays are also measured and compared to expectations.

AB - Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and ψ(2S), in the decay mode J/ψπ+π −, measured using 11.4 fb−1 of pp collisions at √ s = 8 TeV by the ATLAS detector at the LHC. The ratio of cross sections X(3872)/ψ(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and ψ(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and ψ(2S) production gives RB = Br(B→X(3872) + any)Br(X(3872)→J/ψπ+π−) Br(B→ψ(2S) + any)Br(ψ(2S)→J/ψπ+π−) = (3.95 ± 0.32(stat) ± 0.08(sys))%, while separating short and long-lived contributions, assuming that the short-lived component is due to Bc decays, gives RB = (3.57±0.33(stat)±0.11(sys))%, with the fraction of non-prompt X(3872) produced via Bc decays for pT (X(3872)) > 10 GeV being (25 ± 13(stat) ± 2(sys) ± 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and ψ(2S) decays are also measured and compared to expectations.

KW - B physics

KW - Quarkonium

KW - X(3872)

KW - psi(2S)

M3 - Doctoral Thesis

PB - Lancaster University

ER -