Search for low-mass hidden-valley dark showers with non-prompt muon pairs in proton-proton collisions at s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
|
||
| Dergi Adı | Journal of High Energy Physics (Q1) | ||
| Dergi ISSN | 1029-8479 Dergi Bilgileri (2026) | ||
| Makale Dili | İngilizce | Basım Tarihi | 03-2026 |
| Kabul Tarihi | 08-01-2026 | Yayınlanma Tarihi | 19-03-2026 |
| Cilt / Sayı / Sayfa | 2026 / 3 / – | DOI | 10.1007/JHEP03(2026)189 |
| Makale Linki | https://hal.science/hal-05381911/ | ||
| UAK Araştırma Alanları |
Nükleer Fizik
|
||
| Özet |
| A search for signatures of a dark analog to quantum chromodynamics is performed. The analysis targets long-lived dark mesons that decay into standard-model particles, with a high branching fraction of the dark mesons decaying into muons. The dark mesons are formed by the hadronisation of dark partons, which are produced by a decay of the Higgs boson. The search is performed using a data set corresponding to an integrated luminosity of 41.6 fb, which was collected in proton-proton collisions at = 13 TeV by the CMS experiment at the CERN LHC in 2018 using non-prompt muon triggers. The search is based on resonant muon pair signatures. Machine-learning techniques are employed in the analysis, utilising boosted decision trees to discriminate between signal and background. No significant excess is observed above the standard model expectation. Upper limits on the branching fraction of the Higgs boson decaying to dark partons are determined to be as low as 10 at 95% confidence level, surpassing and extending the existing limits on models with dark mesons for mean proper decay lengths of less than 500 mm and for masses down to 0.3 GeV. First limits are set for extended dark-shower models with two dark flavours that contain dark photons, probing their masses down to 0.33 GeV. |
| Anahtar Kelimeler |
| Beyond Standard Model | Dark Matter | Hadron-Hadron Scattering |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Google Scholar | 5 |