9–15 Nov 2025
CBPF, Rio de Janeiro
America/Sao_Paulo timezone

Projections for CEP of W pairs in the HL-LHC with the PPS2 detector of the CMS experiment

POSTER_13
12 Nov 2025, 16:06
6m
CBPF, Rio de Janeiro

CBPF, Rio de Janeiro

Rua Dr. Xavier Sigaud 150, Urca, Rio de Janeiro

Speaker

Omar Silveira (Universidade Federal do Rio Grande do Sul (UFRGS))

Description

This work consists of a projection study on the efficiency of the PPS detector in the high-luminosity regime through the CEP process $pp\rightarrow p(W^{+}W^{-})p$ with hadronic decay in both W bosons. Simulated samples containing: signal for SM, anomalous coupling $a_0^W = 2\times 10^{-7}$, anomalous coupling $a_C^W = 2\times 10^{-5}$, and with the QCD background for $pp\rightarrow 4J$, were subjected to a selection process where the kinematics equations of CEP processes were applied. The W bosons reconstruction counted on the ordering of jet pairs based on their mass proximity to the one of the W boson. The hadronic decay of both W bosons, requiring the presence of 4 jets in each event, proved to be a major limitation in searching for signal. The projected significance is presented for both anomalous couplings and SM signal, which is expected to be improved with optimized kinematic cuts, like acoplanarity on W bosons and their respective dijets decays. Improvements will be used to establish new exclusion limits for the aQGC couplings $a_0^W$ and $a_C^W$.

Author

Omar Silveira (Universidade Federal do Rio Grande do Sul (UFRGS))

Co-authors

Mr César Augusto Bernardes (Universidade Federal do Rio Grande do Sul (UFRGS)) Mr Gustavo Gil da Silveira (Universidade Federal do Rio Grande do Sul (UFRGS))

Presentation materials