Abstract (data abstract)

A search for light long-lived particles decaying to displaced jets is presented, using a data sample of proton-proton collisions at a center-of-mass energy of $13.6~\mathrm{TeV}$, corresponding to an integrated luminosity of $34.7~\mathrm{fb^{-1}}$, collected with the CMS detector at the CERN LHC in 2022. Novel trigger, reconstruction, and machine-learning techniques were developed for and employed in this search. After all selections, the observations are consistent with the background predictions. Limits are presented on the branching fraction of the Higgs boson to long-lived particles that subsequently decay to quark pairs or tau lepton pairs. Up to a factor of 10 improvement is achieved over previous limits for models with long-lived particle masses smaller than $60~\mathrm{GeV}$ and proper decay lengths smaller than $1~\mathrm{m}$. The first constraints are placed on the fraternal twin Higgs and folded supersymmetry models, where the lower bounds on the top quark partner mass reach up to $350~\mathrm{GeV}$ for the fraternal twin Higgs model and $250~\mathrm{GeV}$ for the folded supersymmetry model.

Figure 3

Data from Figure 3

10.17182/hepdata.153947.v1/t1

The predicted background yields and the number of observed events for the data with $g_{\mathrm{prompt-veto}}>0.985$, shown for different bins of...
Figure 4a

Data from Figure 4, upper left

10.17182/hepdata.153947.v1/t2

The 95% CL upper limits on the branching fraction $\mathcal{B}(\mathrm{H \to SS})$ with $\mathrm{S \to b\overline{b}}$ deacy, for different LLP...
Figure 4b

Data from Figure 4, upper right

10.17182/hepdata.153947.v1/t3

The 95% CL upper limits on the branching fraction $\mathcal{B}(\mathrm{H \to SS})$ with $\mathrm{S \to d\overline{d}}$ decay, for different LLP...
Figure 4c

Data from Figure 4, lower

10.17182/hepdata.153947.v1/t4

The 95% CL upper limits on the branching fraction $\mathcal{B}(\mathrm{H \to SS})$ with $\mathrm{S}\to\tau\tau$ decay, for different LLP masses $m_{\mathrm{S}}$...
Figure 6a

Data from Figure 6 (left)

10.17182/hepdata.153947.v1/t5

The 95% CL limits on the LLP mass $m_{\mathrm{S}}$ for different proper decay lengths $c\tau_{0}$ assuming a branching fraction of...
Figure 6b

Data from Figure 6 (right)

10.17182/hepdata.153947.v1/t6

The 95% CL limits on the LLP mass $m_{\mathrm{S}}$ for different proper decay lengths $c\tau_{0}$ assuming a branching fraction of...
Figure 7a

Data from Figure 7 (left)

10.17182/hepdata.153947.v1/t7

The 95% CL limits on the dark-sector top quark partner mass $m_{T}$ for different hidden glueball masses $m_{0}$ in the...
Figure 7b

Data from Figure 7 (right)

10.17182/hepdata.153947.v1/t8

The 95% CL limits on the dark-sector top quark partner mass $m_{T}$ for different hidden glueball masses $m_{0}$ in the...

Figure 3

Figure 4a

Figure 4b

Figure 4c

Figure 6a

Figure 6b

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Figure 7b

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