Measurements of jet observables sensitive to b -quark fragmentation in t t ¯ events at the LHC with the ATLAS detector
Aad, G. ; Åkesson, T.P.A. LU
; Bocchetta, S.S.
LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Geisen, J.
LU
; Gregersen, K.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
and Jarlskog, G.
LU
, et al.
(2022)
In Physical Review D
106(3).
- Abstract
- Several observables sensitive to the fragmentation of b quarks into b hadrons are measured using 36 fb-1 of s=13 TeV proton-proton collision data collected with the ATLAS detector at the LHC. Jets containing b hadrons are obtained from a sample of dileptonic tt¯ events, and the associated set of charged-particle tracks is separated into those from the primary pp interaction vertex and those from the displaced b-decay secondary vertex. This division is used to construct observables that characterize the longitudinal and transverse momentum distributions of the b hadron within the jet. The measurements have been corrected for detector effects and provide a test of heavy-quark-fragmentation modeling at the LHC in a system where the top-quark... (More)
- Several observables sensitive to the fragmentation of b quarks into b hadrons are measured using 36 fb-1 of s=13 TeV proton-proton collision data collected with the ATLAS detector at the LHC. Jets containing b hadrons are obtained from a sample of dileptonic tt¯ events, and the associated set of charged-particle tracks is separated into those from the primary pp interaction vertex and those from the displaced b-decay secondary vertex. This division is used to construct observables that characterize the longitudinal and transverse momentum distributions of the b hadron within the jet. The measurements have been corrected for detector effects and provide a test of heavy-quark-fragmentation modeling at the LHC in a system where the top-quark decay products are color connected to the proton beam remnants. The unfolded distributions are compared with the predictions of several modern Monte Carlo parton-shower generators and generator tunes, and a wide range of agreement with the data is observed, with p values varying from 5×10-4 to 0.98. These measurements complement similar measurements from e+e- collider experiments in which the b quarks originate from a color singlet Z/γ∗. © 2022 CERN. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8d0c6361-77d9-4811-b08e-6080f339f1dc
- author
- Aad, G.
; Åkesson, T.P.A.
LU
; Bocchetta, S.S.
LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Geisen, J.
LU
; Gregersen, K.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
and Jarlskog, G.
LU
, et al. (More)
- Aad, G.
; Åkesson, T.P.A.
LU
; Bocchetta, S.S.
LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Geisen, J.
LU
; Gregersen, K.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
; Jarlskog, G.
LU
; Kellermann, E.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Mankinen, K.H.
LU
; Marcon, C.
LU
; Mjörnmark, J.U.
LU
; Mullier, G.A.
LU
; Poettgen, R.
LU
; Poulsen, T.
LU
; Skorda, E.
LU
; Smirnova, O.
LU
and Zwalinski, L.
(Less)
- author collaboration
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D
- volume
- 106
- issue
- 3
- article number
- 032008
- publisher
- American Physical Society
- external identifiers
-
- scopus:85137849198
- ISSN
- 2470-0010
- DOI
- 10.1103/PhysRevD.106.032008
- language
- English
- LU publication?
- yes
- id
- 8d0c6361-77d9-4811-b08e-6080f339f1dc
- date added to LUP
- 2022-12-19 15:13:16
- date last changed
- 2023-04-06 17:39:29
@article{8d0c6361-77d9-4811-b08e-6080f339f1dc,
abstract = {{Several observables sensitive to the fragmentation of b quarks into b hadrons are measured using 36 fb-1 of s=13 TeV proton-proton collision data collected with the ATLAS detector at the LHC. Jets containing b hadrons are obtained from a sample of dileptonic tt¯ events, and the associated set of charged-particle tracks is separated into those from the primary pp interaction vertex and those from the displaced b-decay secondary vertex. This division is used to construct observables that characterize the longitudinal and transverse momentum distributions of the b hadron within the jet. The measurements have been corrected for detector effects and provide a test of heavy-quark-fragmentation modeling at the LHC in a system where the top-quark decay products are color connected to the proton beam remnants. The unfolded distributions are compared with the predictions of several modern Monte Carlo parton-shower generators and generator tunes, and a wide range of agreement with the data is observed, with p values varying from 5×10-4 to 0.98. These measurements complement similar measurements from e+e- collider experiments in which the b quarks originate from a color singlet Z/γ∗. © 2022 CERN.}},
author = {{Aad, G. and Åkesson, T.P.A. and Bocchetta, S.S. and Corrigan, E.E. and Doglioni, C. and Geisen, J. and Gregersen, K. and Hansen, E. and Hedberg, V. and Jarlskog, G. and Kellermann, E. and Konya, B. and Lytken, E. and Mankinen, K.H. and Marcon, C. and Mjörnmark, J.U. and Mullier, G.A. and Poettgen, R. and Poulsen, T. and Skorda, E. and Smirnova, O. and Zwalinski, L.}},
issn = {{2470-0010}},
language = {{eng}},
number = {{3}},
publisher = {{American Physical Society}},
series = {{Physical Review D}},
title = {{Measurements of jet observables sensitive to b -quark fragmentation in t t ¯ events at the LHC with the ATLAS detector}},
url = {{http://dx.doi.org/10.1103/PhysRevD.106.032008}},
doi = {{10.1103/PhysRevD.106.032008}},
volume = {{106}},
year = {{2022}},
}