Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV

the CMS Collaboration; David B Anthony; Jim Brooke; Aaron Bundock; Florian J J Bury; Emyr J Clement; David G Cussans; H. Flächer; Joel Goldstein; Helen F Heath; Mei-Li Holmberg; Lukasz Kreczko; Sudarshan Paramesvaran; Liam Robertshaw; Vincent J Smith; Katie L M R Walkingshaw Pass; et al

doi:10.1007/JHEP11(2025)060

Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV

the CMS Collaboration, David B Anthony, Jim Brooke, Aaron Bundock, Florian J J Bury, Emyr J Clement, David G Cussans, H. Flächer, Joel Goldstein, Helen F Heath, Mei-Li Holmberg, Lukasz Kreczko, Sudarshan Paramesvaran, Liam Robertshaw, Vincent J Smith, Katie L M R Walkingshaw Pass, et al

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Abstract

This paper presents the first search for a cH signal sensitive to the coupling of the charm quark (c) to the Higgs boson (H) in the associated production of at least one charm quark with a Higgs boson decaying to two photons. The results are based on a data set of proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb⁻¹ . Assuming the standard model (SM) rates for all other Higgs boson production processes, the observed (expected) upper limit at 95% confidence level on the cH signal strength is 243 (355) times the SM prediction. Under the same assumption, the observed (expected) allowed interval on the Higgs boson to charm quark coupling modifier, κ_c , is |κ_c | < 38.1 (|κ_c| < 72.5) at 95% confidence level.

Original language	English
Article number	60
Number of pages	41
Journal	Journal of High Energy Physics
Volume	2025
Issue number	11
DOIs	https://doi.org/10.1007/JHEP11(2025)060
Publication status	Published - 12 Nov 2025

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the CMS Collaboration, Anthony, D. B., Brooke, J., Bundock, A., Bury, F. J. J., Clement, E. J., Cussans, D. G., Flächer, H., Goldstein, J., Heath, H. F., Holmberg, M.-L., Kreczko, L., Paramesvaran, S., Robertshaw, L., Smith, V. J., Walkingshaw Pass, K. L. M. R., & al , E. (2025). Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV. Journal of High Energy Physics, 2025(11), Article 60. https://doi.org/10.1007/JHEP11(2025)060

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title = "Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV",

abstract = "This paper presents the first search for a cH signal sensitive to the coupling of the charm quark (c) to the Higgs boson (H) in the associated production of at least one charm quark with a Higgs boson decaying to two photons. The results are based on a data set of proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb−1 . Assuming the standard model (SM) rates for all other Higgs boson production processes, the observed (expected) upper limit at 95\% confidence level on the cH signal strength is 243 (355) times the SM prediction. Under the same assumption, the observed (expected) allowed interval on the Higgs boson to charm quark coupling modifier, κc , is |κc | < 38.1 (|κc | < 72.5) at 95\% confidence level.",

author = "\{the CMS Collaboration\} and Anthony, \{David B\} and Jim Brooke and Aaron Bundock and Bury, \{Florian J J\} and Clement, \{Emyr J\} and Cussans, \{David G\} and H. Fl{\"a}cher and Joel Goldstein and Heath, \{Helen F\} and Mei-Li Holmberg and Lukasz Kreczko and Sudarshan Paramesvaran and Liam Robertshaw and Smith, \{Vincent J\} and \{Walkingshaw Pass\}, \{Katie L M R\} and et al",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = nov,

day = "12",

doi = "10.1007/JHEP11(2025)060",

language = "English",

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the CMS Collaboration, Anthony, DB, Brooke, J , Bundock, A , Bury, FJJ , Clement, EJ , Cussans, DG , Flächer, H , Goldstein, J, Heath, HF, Holmberg, M-L , Kreczko, L , Paramesvaran, S , Robertshaw, L, Smith, VJ, Walkingshaw Pass, KLMR & al , E 2025, 'Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV', Journal of High Energy Physics, vol. 2025, no. 11, 60. https://doi.org/10.1007/JHEP11(2025)060

Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV. / the CMS Collaboration; Anthony, David B; Brooke, Jim et al.
In: Journal of High Energy Physics, Vol. 2025, No. 11, 60, 12.11.2025.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

TY - JOUR

T1 - Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV

AU - the CMS Collaboration

AU - Anthony, David B

AU - Brooke, Jim

AU - Bundock, Aaron

AU - Bury, Florian J J

AU - Clement, Emyr J

AU - Cussans, David G

AU - Flächer, H.

AU - Goldstein, Joel

AU - Heath, Helen F

AU - Holmberg, Mei-Li

AU - Kreczko, Lukasz

AU - Paramesvaran, Sudarshan

AU - Robertshaw, Liam

AU - Smith, Vincent J

AU - Walkingshaw Pass, Katie L M R

AU - al , et

PY - 2025/11/12

Y1 - 2025/11/12

N2 - This paper presents the first search for a cH signal sensitive to the coupling of the charm quark (c) to the Higgs boson (H) in the associated production of at least one charm quark with a Higgs boson decaying to two photons. The results are based on a data set of proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb−1 . Assuming the standard model (SM) rates for all other Higgs boson production processes, the observed (expected) upper limit at 95% confidence level on the cH signal strength is 243 (355) times the SM prediction. Under the same assumption, the observed (expected) allowed interval on the Higgs boson to charm quark coupling modifier, κc , is |κc | < 38.1 (|κc | < 72.5) at 95% confidence level.

AB - This paper presents the first search for a cH signal sensitive to the coupling of the charm quark (c) to the Higgs boson (H) in the associated production of at least one charm quark with a Higgs boson decaying to two photons. The results are based on a data set of proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb−1 . Assuming the standard model (SM) rates for all other Higgs boson production processes, the observed (expected) upper limit at 95% confidence level on the cH signal strength is 243 (355) times the SM prediction. Under the same assumption, the observed (expected) allowed interval on the Higgs boson to charm quark coupling modifier, κc , is |κc | < 38.1 (|κc | < 72.5) at 95% confidence level.

U2 - 10.1007/JHEP11(2025)060

DO - 10.1007/JHEP11(2025)060

M3 - Article (Academic Journal)

SN - 1029-8479

VL - 2025

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

M1 - 60

ER -

Search for a cH signal in the associated production of at least one charm quark with a Higgs boson in the diphoton decay channel in pp collisions at √s = 13 TeV

Abstract

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