Search for light long-lived neutral particles produced in pp collisions at √s=13TeV and decaying into collimated leptons or light hadrons with the ATLAS detector
Aad, G ; Åkesson, Torsten LU
; Bocchetta, Simona
LU
; Bryngemark, Lene
LU
; Corrigan, Eric Edward
LU
; Doglioni, Caterina
LU
; Gregersen, Kristian
LU
; Brottmann Hansen, Eva
LU
; Hedberg, Vincent
LU
and Jarlskog, Göran
LU
, et al.
(2020)
In European Physical Journal C
80(5).
- Abstract
- Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived dark photons produced from the decay of a Higgs boson or a heavy scalar boson and decaying into displaced collimated Standard Model fermions. The search uses data corresponding to an integrated luminosity of 36.1 fb- 1 collected in proton–proton collisions at s=13 Te recorded in 2015–2016 with the ATLAS detector at the Large Hadron Collider. The observed number of events is consistent with the expected background, and limits on the production cross section times branching fraction as a function of the proper decay length of the dark... (More)
- Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived dark photons produced from the decay of a Higgs boson or a heavy scalar boson and decaying into displaced collimated Standard Model fermions. The search uses data corresponding to an integrated luminosity of 36.1 fb- 1 collected in proton–proton collisions at s=13 Te recorded in 2015–2016 with the ATLAS detector at the Large Hadron Collider. The observed number of events is consistent with the expected background, and limits on the production cross section times branching fraction as a function of the proper decay length of the dark photon are reported. A cross section times branching fraction above 4 pb is excluded for a Higgs boson decaying into two dark photons for dark-photon decay lengths between 1.5 mm and 307 mm. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/e141b0a2-1a40-4d82-9214-a2c0959474ad
- author
- Aad, G
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Bryngemark, Lene
LU
; Corrigan, Eric Edward
LU
; Doglioni, Caterina
LU
; Gregersen, Kristian
LU
; Brottmann Hansen, Eva
LU
; Hedberg, Vincent
LU
and Jarlskog, Göran
LU
, et al. (More)
- Aad, G
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Bryngemark, Lene
LU
; Corrigan, Eric Edward
LU
; Doglioni, Caterina
LU
; Gregersen, Kristian
LU
; Brottmann Hansen, Eva
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Kalderon, Charles
LU
; Kellermann, Edgar
LU
; Konya, Balazs
LU
; Lytken, Else
LU
; Mankinen, Katja
LU
; Marcon, Caterina
LU
; Mjörnmark, Ulf
LU
; Mullier, Geoffrey André Adrien
LU
; Pöttgen, Ruth
LU
; Poulsen, Trine
LU
; Skorda, Eleni
LU
; Smirnova, Oxana
LU
and Zwalinski, L.
(Less)
- author collaboration
- organization
- publishing date
- 2020-05-20
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 80
- issue
- 5
- article number
- 450
- publisher
- Springer
- external identifiers
-
- scopus:85085041736
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-020-7997-4
- language
- English
- LU publication?
- yes
- id
- e141b0a2-1a40-4d82-9214-a2c0959474ad
- date added to LUP
- 2020-06-24 11:12:13
- date last changed
- 2023-04-10 15:30:43
@article{e141b0a2-1a40-4d82-9214-a2c0959474ad,
abstract = {{Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived dark photons produced from the decay of a Higgs boson or a heavy scalar boson and decaying into displaced collimated Standard Model fermions. The search uses data corresponding to an integrated luminosity of 36.1 fb- 1 collected in proton–proton collisions at s=13 Te recorded in 2015–2016 with the ATLAS detector at the Large Hadron Collider. The observed number of events is consistent with the expected background, and limits on the production cross section times branching fraction as a function of the proper decay length of the dark photon are reported. A cross section times branching fraction above 4 pb is excluded for a Higgs boson decaying into two dark photons for dark-photon decay lengths between 1.5 mm and 307 mm.}},
author = {{Aad, G and Åkesson, Torsten and Bocchetta, Simona and Bryngemark, Lene and Corrigan, Eric Edward and Doglioni, Caterina and Gregersen, Kristian and Brottmann Hansen, Eva and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Marcon, Caterina and Mjörnmark, Ulf and Mullier, Geoffrey André Adrien and Pöttgen, Ruth and Poulsen, Trine and Skorda, Eleni and Smirnova, Oxana and Zwalinski, L.}},
issn = {{1434-6044}},
language = {{eng}},
month = {{05}},
number = {{5}},
publisher = {{Springer}},
series = {{European Physical Journal C}},
title = {{Search for light long-lived neutral particles produced in pp collisions at √s=13TeV and decaying into collimated leptons or light hadrons with the ATLAS detector}},
url = {{http://dx.doi.org/10.1140/epjc/s10052-020-7997-4}},
doi = {{10.1140/epjc/s10052-020-7997-4}},
volume = {{80}},
year = {{2020}},
}