par Hayrapetyan, A.;Bilin, Bugra 
;Clerbaux, Barbara ;Das, Aloke Kumar ;De Lentdecker, Gilles ;Evard, Hugues ;Favart, Laurent ;Gianneios, Paraskevas ;Jaramillo Gallego, Johny ;Khalilzadeh, Ali ;Mahdavikhorrami, Mostafa ;Malara, Andrea ;Paredes, Sergio ;Shahzad, Muhammad Aamir ;Vanden Bemden, Max ;Vander Velde, Catherine ;Vanlaer, Pascal ; [et al.]
Référence Physics letters. Section B, 862, 139296
Publication Publié, 2025-02-01
;Clerbaux, Barbara ;Das, Aloke Kumar ;De Lentdecker, Gilles ;Evard, Hugues ;Favart, Laurent ;Gianneios, Paraskevas ;Jaramillo Gallego, Johny ;Khalilzadeh, Ali ;Mahdavikhorrami, Mostafa ;Malara, Andrea ;Paredes, Sergio ;Shahzad, Muhammad Aamir ;Vanden Bemden, Max ;Vander Velde, Catherine ;Vanlaer, Pascal ; [et al.]Référence Physics letters. Section B, 862, 139296
Publication Publié, 2025-02-01
Article révisé par les pairs
| Résumé : | Three rare decay processes of the Higgs boson to a ρ(770)0, ϕ(1020), or K⁎(892)0 meson and a photon are searched for using s=13TeV proton-proton collision data collected by the CMS experiment at the LHC. Events are selected assuming the mesons decay into a pair of charged pions, a pair of charged kaons, or a charged kaon and pion, respectively. Depending on the Higgs boson production mode, different triggering and reconstruction techniques are adopted. The analyzed data sets correspond to integrated luminosities up to 138fb−1, depending on the reconstructed final state. After combining various data sets and categories, no significant excess above the background expectations is observed. Upper limits at 95% confidence level on the Higgs boson branching fractions into ρ(770)0γ, ϕ(1020)γ, and K⁎(892)0γ are determined to be 3.7×10−4, 3.0×10−4, and 3.0×10−4, respectively. In case of the ρ(770)0γ and ϕ(1020)γ channels, these are the most stringent experimental limits to date. |
