TY  - JOUR
AU  - Cottin, G.
AU  - Helo, J. C.
AU  - Hirsch, M.
AU  - Pena, C.
AU  - Wang, C. S. A.
AU  - Xie, S.
PY  - 2023
DA  - 2023//
TI  - Long-lived heavy neutral leptons with a displaced shower signature at CMS
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 011
EP  - 16pp
VL  - 02
IS  - 2
PB  - Springer
KW  - New Light Particles
KW  - Sterile or Heavy Neutrinos
AB  - We study the LHC discovery potential in the search for heavy neutral leptons (HNL) with a new signature: a displaced shower in the CMS muon detector, giving rise to a large cluster of hits forming a displaced shower. A new Delphes module is used to model the CMS detector response for such displaced decays. We reinterpret a dedicated CMS search for neutral long-lived particles decaying in the CMS muon endcap detectors for the minimal HNL scenario. We demonstrate that this new strategy is particularly sensitive to active-sterile mixings with tau leptons, due to hadronic tau decays. HNL masses between similar to 1-6 GeV can be accessed for mixings as low as vertical bar V-tau N vertical bar(2) similar to 10(-7), probing unique regions of parameter space in the tau sector.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2210.17446
UR  - https://doi.org/10.1007/JHEP02(2023)011
DO  - 10.1007/JHEP02(2023)011
LA  - English
N1  - WOS:000924750700002
ID  - Cottin_etal2023
ER  -