Measurements of ψ(2S) and X(3872) → J/ψπ + π − production in pp collisions at √s=8 TeV with the ATLAS detector
Aaboud, M ; Åkesson, Torsten LU
; Bocchetta, Simona
LU
; Bryngemark, Lene
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Lytken, Else
LU
; Mjörnmark, Ulf
LU
and Smirnova, Oxana
LU
, et al.
(2017)
In Journal of High Energy Physics
2017(1).
- 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=ℬ(B→X(3872)+any)ℬ(X(3872)→J/ψπ+π−)/ℬ(B→ψ(2S)+any)ℬ(ψ(2S)→J/ψπ+π−)=(3.95±0.32(stat)±0.08(sys))×10−2 separating short- and long-lived contributions, assuming that the short-lived component is due to Bc decays, gives RB = (3.57 ± 0.33(stat) ±... (More)
- 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=ℬ(B→X(3872)+any)ℬ(X(3872)→J/ψπ+π−)/ℬ(B→ψ(2S)+any)ℬ(ψ(2S)→J/ψπ+π−)=(3.95±0.32(stat)±0.08(sys))×10−2 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)) × 10−2, 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 theoretical predictions.[Figure not available: see fulltext.] © 2017, The Author(s). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/edd8ae15-9072-4acd-8471-ff82fc0b64e1
- author
- Aaboud, M
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Bryngemark, Lene
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Lytken, Else
LU
; Mjörnmark, Ulf
LU
and Smirnova, Oxana
LU
, et al. (More)
- Aaboud, M
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Bryngemark, Lene
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Lytken, Else
LU
; Mjörnmark, Ulf
LU
; Smirnova, Oxana
LU
and Viazlo, Oleksandr
LU
(Less)
- author collaboration
- organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of High Energy Physics
- volume
- 2017
- issue
- 1
- publisher
- Springer
- external identifiers
-
- scopus:85011340463
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP01(2017)117
- language
- English
- LU publication?
- yes
- id
- edd8ae15-9072-4acd-8471-ff82fc0b64e1
- date added to LUP
- 2018-09-27 19:54:00
- date last changed
- 2023-04-08 18:00:21
@article{edd8ae15-9072-4acd-8471-ff82fc0b64e1,
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=ℬ(B→X(3872)+any)ℬ(X(3872)→J/ψπ+π−)/ℬ(B→ψ(2S)+any)ℬ(ψ(2S)→J/ψπ+π−)=(3.95±0.32(stat)±0.08(sys))×10−2 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)) × 10−2, 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 theoretical predictions.[Figure not available: see fulltext.] © 2017, The Author(s).}},
author = {{Aaboud, M and Åkesson, Torsten and Bocchetta, Simona and Bryngemark, Lene and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr}},
issn = {{1029-8479}},
language = {{eng}},
number = {{1}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Measurements of ψ(2S) and X(3872) → J/ψπ + π − production in pp collisions at √s=8 TeV with the ATLAS detector}},
url = {{http://dx.doi.org/10.1007/JHEP01(2017)117}},
doi = {{10.1007/JHEP01(2017)117}},
volume = {{2017}},
year = {{2017}},
}