Search for flavour-changing neutral tqH interactions with H → γγ in pp collisions at (Formula presented.) TeV using the ATLAS detector
Aad, G. ; Åkesson, T.P.A. LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Poettgen, R.
LU
and Simpson, N.D.
LU
, et al.
(2023)
In Journal of High Energy Physics
2023(12).
- Abstract
- A search for flavour-changing neutral interactions involving the top quark, the Higgs boson and an up-type quark q (q = c, u) is presented. The proton-proton collision data set used, with an integrated luminosity of 139 fb−1, was collected at (Formula presented.) TeV by the ATLAS experiment at the Large Hadron Collider. Both the decay process t → qH in tt¯ production and the production process pp → tH, with the Higgs boson decaying into two photons, are investigated. No significant excess is observed and upper limits are set on the t → cH and the t → uH branching ratios of 4.3 × 10−4 and 3.8 × 10−4, respectively, at the 95% confidence level, while the expected limits in the absence of signal are 4.7 × 10−4 and 3.9 × 10−4. Combining this... (More)
- A search for flavour-changing neutral interactions involving the top quark, the Higgs boson and an up-type quark q (q = c, u) is presented. The proton-proton collision data set used, with an integrated luminosity of 139 fb−1, was collected at (Formula presented.) TeV by the ATLAS experiment at the Large Hadron Collider. Both the decay process t → qH in tt¯ production and the production process pp → tH, with the Higgs boson decaying into two photons, are investigated. No significant excess is observed and upper limits are set on the t → cH and the t → uH branching ratios of 4.3 × 10−4 and 3.8 × 10−4, respectively, at the 95% confidence level, while the expected limits in the absence of signal are 4.7 × 10−4 and 3.9 × 10−4. Combining this search with ATLAS searches in the H → τ+τ− and H → bb¯ final states yields observed (expected) upper limits on the t → cH branching ratio of 5.8 × 10−4 (3.0 × 10−4) at the 95% confidence level. The corresponding observed (expected) upper limit on the t → uH branching ratio is 4.0 × 10−4 (2.4 × 10−4). © The Author(s) 2024. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/0383c645-f312-4bf9-aae5-5252fb8255ce
- author
- Aad, G.
; Åkesson, T.P.A.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Poettgen, R.
LU
and Simpson, N.D.
LU
, et al. (More)
- Aad, G.
; Åkesson, T.P.A.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Poettgen, R.
LU
; Simpson, N.D.
LU
; Smirnova, O.
LU
and Zwalinski, L.
(Less)
- author collaboration
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Flavour Changing Neutral Currents, Hadron-Hadron Scattering, Higgs Physics, Top Physics
- in
- Journal of High Energy Physics
- volume
- 2023
- issue
- 12
- article number
- 195
- publisher
- Springer
- external identifiers
-
- scopus:85197382582
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP12(2023)195
- language
- English
- LU publication?
- yes
- id
- 0383c645-f312-4bf9-aae5-5252fb8255ce
- date added to LUP
- 2024-10-02 14:24:48
- date last changed
- 2025-04-04 14:07:26
@article{0383c645-f312-4bf9-aae5-5252fb8255ce,
abstract = {{A search for flavour-changing neutral interactions involving the top quark, the Higgs boson and an up-type quark q (q = c, u) is presented. The proton-proton collision data set used, with an integrated luminosity of 139 fb−1, was collected at (Formula presented.) TeV by the ATLAS experiment at the Large Hadron Collider. Both the decay process t → qH in tt¯ production and the production process pp → tH, with the Higgs boson decaying into two photons, are investigated. No significant excess is observed and upper limits are set on the t → cH and the t → uH branching ratios of 4.3 × 10−4 and 3.8 × 10−4, respectively, at the 95% confidence level, while the expected limits in the absence of signal are 4.7 × 10−4 and 3.9 × 10−4. Combining this search with ATLAS searches in the H → τ+τ− and H → bb¯ final states yields observed (expected) upper limits on the t → cH branching ratio of 5.8 × 10−4 (3.0 × 10−4) at the 95% confidence level. The corresponding observed (expected) upper limit on the t → uH branching ratio is 4.0 × 10−4 (2.4 × 10−4). © The Author(s) 2024.}},
author = {{Aad, G. and Åkesson, T.P.A. and Doglioni, C. and Ekman, P.A. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Simpson, N.D. and Smirnova, O. and Zwalinski, L.}},
issn = {{1029-8479}},
keywords = {{Flavour Changing Neutral Currents; Hadron-Hadron Scattering; Higgs Physics; Top Physics}},
language = {{eng}},
number = {{12}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Search for flavour-changing neutral tqH interactions with H → γγ in pp collisions at (Formula presented.) TeV using the ATLAS detector}},
url = {{http://dx.doi.org/10.1007/JHEP12(2023)195}},
doi = {{10.1007/JHEP12(2023)195}},
volume = {{2023}},
year = {{2023}},
}