• • • We do not use the following data for averages, fits, limits, etc. • • • |
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1 |
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ATLS |
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2 |
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ATLS |
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3 |
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FASR |
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4 |
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CMS |
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5 |
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CMS |
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6 |
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ATLS |
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7 |
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ATLS |
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8 |
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ATLS |
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9 |
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FASR |
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10 |
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CMS |
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11 |
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CMS |
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12 |
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CMS |
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13 |
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CMS |
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14 |
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CMS |
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15 |
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ATLS |
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16 |
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ATLS |
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17 |
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ATLS |
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18 |
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ATLS |
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19 |
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ATLS |
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20 |
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ATLS |
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21 |
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CMS |
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22 |
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CMS |
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23 |
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ATLS |
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24 |
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ATLS |
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25 |
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ATLS |
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26 |
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LHCB |
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27 |
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MOED |
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28 |
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CMS |
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29 |
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CMS |
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30 |
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CMS |
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31 |
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CMS |
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32 |
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ATLS |
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33 |
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ATLS |
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34 |
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LHCB |
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35 |
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CMS |
$<0.07$ |
95 |
36 |
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CMS |
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37 |
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CMS |
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38 |
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ATLS |
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39 |
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ATLS |
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40 |
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ATLS |
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41 |
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ATLS |
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42 |
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LHCB |
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43 |
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44 |
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ATLS |
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45 |
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ATLS |
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46 |
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ATLS |
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47 |
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ATLS |
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48 |
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ATLS |
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49 |
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ATLS |
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50 |
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CMS |
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51 |
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CMS |
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52 |
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CMS |
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53 |
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CMS |
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54 |
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CMS |
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55 |
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LHCB |
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56 |
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CMS |
$<2000$ |
90 |
57 |
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BDMP |
1
AAD 2025AE search for heavy long-lived particles in ATLAS detector. No signal observed. Limits placed in mass vs. lifetime plane for several R-parity violating SUSY models.
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2
AAD 2025M searches for long-lived sleptons and charginos decaying to displaced leptons in ATLAS Run 2 and a subset of Run 3 data. No signal observed. Limits placed in m(LLP) vs. lifetime ${{\mathit \tau}}$ plane for different LLP hypotheses.
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3
ABRAHAM 2025 report search for LLPs produced at LHC but undergo delayed decays to multi-photon final states downstream at FASER detector. 1 event observed. Limits placed in mass vs. coupling plane for a variety of BSM models, including ALPs.
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4
CHEKHOVSKY 2025E report on CMS search for vector-like lepton pair production with decay to long-lived boson ${{\mathit a}}$ which decays to ${{\mathit \gamma}}{{\mathit \gamma}}$ in muon chamber. No signal observed. Limits placed in m(VLL) vs ${{\mathit \tau}_{{{a}}}}$ plane.
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5
HAYRAPETYAN 2025V search for multi-charged long-lived particles (R-hadrons and other exotica) at CMS with 101 fb${}^{-1}$. No signal observed. Limits placed on production cross section vs. mass.
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6
AAD 2024AS search for long-lived dark photons (DP) produced from dark sector. No signal observed. Limits placed in portal coupling vs m(DP) plane.
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7
AAD 2024BN report on ATLAS search for hadronically-decaying long-lived particles that decay in the tracking detector. No signal was observed. Limits placed in c${{\mathit \tau}}$ vs cross section or branching fraction plane for various simplified new physics models.
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8
AAD 2024BZ search for long-lived particle decaying to jets in hadronic calorimeter in association with lepton/jet. No signal observed. Limits placed in c${{\mathit \tau}}$ vs. cross section plane for various simplified new physics models.
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9
ABREU 2024 report FASER search for long-lived dark photon ${{\mathit A}^{\,'}}$ decay to ${{\mathit e}^{+}}{{\mathit e}^{-}}$ with 27 fb${}^{-1}$. No signal observed. Limits placed in m(${{\mathit A}^{\,'}}$) vs. kinetic mixing plane and also for a B-L extended gauge model.
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10
HAYRAPETYAN 2024AI search for long-lived particles (LLPs) using a Muon Detector Shower with a high hit multiplicity in the muon chambers with 138 fb${}^{-1}$ of data at 13 TeV. No signal was observed. Limits placed in Higgs BF vs. c${{\mathit \tau}}$ (lifetime) plane.
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11
HAYRAPETYAN 2024M search for long-lived charginos in SUSY decays with 138 fb${}^{-1}$ of data at 13 TeV. No signal observed. Limits placed in mass vs mass difference plane for various simplified models.
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12
HAYRAPETYAN 2024P search for long-lived particles in SUSY models via displaced vertices with 138 fb${}^{-1}$ of data at 13 TeV. No signal observed. Limits set in split SUSY and gauge mediated SUSY breaking models.
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13
HAYRAPETYAN 2024S search for long-lived heavy neutral lepton decaying in muon chambers with 138 fb${}^{-1}$ of data at 13 TeV. No signal observed. Limits placed in mass vs. mixing angle plane.
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14
HAYRAPETYAN 2024Y search for displaced dimuons in CMS with 36 fb${}^{-1}$ of data at 13.6 TeV. No signal observed. Limits placed for various models inclduing Abelian dark Higgs and RPV SUSY.
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15
AAD 2023AM search for long-lived higgsinos from gauge-mediation which decay to ${{\mathit Z}}$ or ${{\mathit H}}$. No signal observed. Limits placed in c${{\mathit \tau}}$ vs m(${{\mathit \chi}}$) plane for various simplified models.
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16
AAD 2023AR search for long-lived particles via decay to displaced ${{\mathit \gamma}}$ with 139 fb${}^{-1}$ of data. No signal observed. Limits placed in m vs. ${{\mathit \tau}}$ and BF vs. ${{\mathit \tau}}$ planes for gauge-mediated SUSY model.
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17
AAD 2023BQ search for displaced dimuon events in ATLAS detector. No signal observed. Limits placed in smuon lifetime vs. mass plane for long-lived smuon model.
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18
AAD 2023CO search for monopoles and high-electric-charge LLPs in ATLAS with 139 fb${}^{-1}$ of data. No signal observed. Limits placed in mass vs. charge plane.
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19
AAD 2023G search for heavy highly ionizing long-lived particles with 139 fb${}^{-1}$ of data. No signal observed. Limits placed in m vs. ${{\mathit \tau}}$ plane for several SUSY models.
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20
AAD 2023I search for light long-lived particles decaying to collimated decay products (e.g. dileptons). No signal observed. Limits placed in BF vs. ${{\mathit \tau}}$ plane.
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21
TUMASYAN 2023AO search for trackless jets from LLP production at CMS. No signal observed. Limits placed for SUSY model with long-lived neutralino in m(${{\mathit \chi}}$) vs. c${{\mathit \tau}}$ plane.
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22
TUMASYAN 2023G search for LLP decaying to displaced dimuons at CM with 97.6 fb${}^{-1}$ fb of data. No signal observed. Limits placed in c${{\mathit \tau}}$ vs. m plane for hidden Abelian Higgs simplified model.
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23
AAD 2022H search for scalar mediator decay to two LLPs which decay in muon chambers with 139 fb${}^{-1}$ at 13 TeV; no signal detected; limits placed on various simplified models.
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24
AAD 2022K search for LLP pair production via scalar mediator with LLP decay in hadron calorimeter; no signal detected; limits placed for various simplified models.
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25
AAD 2022U search for chargino LLP via disappearing tracks; no signal observed; limits placed in m(chargino) vs lifetime plane for cases of higgsino- or wino-like chargino.
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26
AAIJ 2022U reports search for LLP production at LHCB with 5.4 fb${}^{-1}$ at 13 TeV followed by semileptonic decay to muon; no signal detected; limits placed in mass or lifetime vs. cross section plane for several simplified models.
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27
ACHARYA 2022A report search for monople and HECO production via DY at 8 TeV LHC with 2.2 fb${}^{-1}$ with MoEDAL detector; no signal detected; limits placed in mass vs. cross section plane for various electric/magnetic charge scenarios.
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28
TUMASYAN 2022AD search for heavy neutral lepton which decays as LLP to trilepton state with 138 fb${}^{-1}$ at 13 TeV; no signal detected; limits placed in mass vs. coupling plane.
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29
TUMASYAN 2022AF search for LLPs via displaced lepton vertices. The analysis is performed with an integrated luminosity of 118 (113) fb${}^{-1}$ when analyzing the ${{\mathit e}}{{\mathit e}}$ (${{\mathit e}}{{\mathit \mu}}$, ${{\mathit \mu}}{{\mathit \mu}}$) channel; no signal detected; limits placed for a variety of simplified models.
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30
TUMASYAN 2022M search in 117 fb${}^{-1}$ of 13 TeV data for ${{\mathit Z}}{{\mathit H}}$ production with ${{\mathit H}}$ $\rightarrow$ ${{\mathit S}}{{\mathit S}}$ where ${{\mathit S}}$ is a LLP; no signal observed; limits placed in decay length vs. branching fraction plane.
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31
TUMASYAN 2022N search in 101 fb${}^{-1}$ of 13 TeV data for LLP production via decay to dimuons; no signal observed; limits placed on mass vs. coupling or lifetime for a variety of simplified models.
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32
AAD 2021AL reports on ATLAS search for long-lived charged particles with 139 fb${}^{-1}$ at 13 TeV. No signal observed. Limits placed in lifetime vs. mass plane: e.g. for ${{\mathit \tau}}$(LLP) $\sim{}$ 0.1 ns, m(selectron) $>$ 720 GeV.
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33
AAD 2021BA search for long-lived particles from ${{\mathit Z}}{{\mathit H}}$ production ( ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$) with 2 displaced vertices in 139 fb${}^{-1}$ of data at 13 TeV. No signal detected. Limits placed in branching fraction vs. lifetime plane.
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34
AAIJ 2021V search for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$LLP + LLP with LLP$\rightarrow$ ${{\mathit e}}{{\mathit \mu}}{{\mathit \nu}}$ in the lifetime range between 2 and 50 ps at LHCb with 5.4 fb${}^{-1}$ at 13 TeV. No signal observed. Limits placed in LLP cross section vs. mass or lifetime plane for m(LLP) $\sim{}$ 7 to 50 GeV.
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35
SIRUNYAN 2021AF search for LLPs at CMS via jets with 2 displaced vertices in 140 fb${}^{-1}$ of data at 13 TeV. No signal observed. Limits placed for RPV SUSY models in which a long-lived neutralino or gluino decays into a multijet final state with top, bottom, and strange quarks.
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36
SIRUNYAN 2021U search for long-lived particles (LLPs) via displaced jets at CMS with LHC13 and 132 fb${}^{-1}$. No signal detected. Limits placed on simplified model production of LLP ${{\mathit X}}$ $\rightarrow$ ${{\mathit q}}{{\overline{\mathit q}}}$ with ${{\mathit \sigma}}$ $<$ 0.07 fb for m(X) $>$ 500 GeV and c${{\mathit \tau}}$ $\sim{}$ 2 to 250 mm.
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37
TUMASYAN 2021 search for long-lived particles in CMS muon endcap detector in 137 fb${}^{-1}$ of data at 13 TeV. No signal detected. Limits are placed depending on the branching fraction of Higgs boson to LLP decaying to ${{\mathit d}}{{\mathit d}}$, ${{\mathit b}}{{\mathit b}}$, and ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, depending on proper decay length, and LLP masses.
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38
AAD 2020D search for opposite-sign dileptons originating from long-lived particles in ${{\mathit p}}{{\mathit p}}$ collisions at 13 Tev with 32.8 fb${}^{-1}$; limits placed in squark cross section vs. c${{\mathit \tau}}$ plane for RPV SUSY.
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39
AAD 2020J search for scalar boson decay to two long-lived particles; no signal; limits placed in BF vs c${{\mathit \tau}}$ plane for various mass hypotheses. This search is also combined with other ATLAS displaced-jet searches.
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40
AAD 2020M search for long-lived top-squarks decay to ${{\mathit \mu}}$ and hadrons; no signal; limits placed in cross section vs. mass and mass vs. lifetime planes.
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41
AAD 2020P search for long-lived dark photons produced from the decay of a scalar boson, with each dark photon decaying into displaced collimated leptons or light hadrons at 13 TeV with 36 fb${}^{-1}$; no signal; limits placed in ${{\mathit \sigma}}\cdot{}$BF vs. c${{\mathit \tau}}$ and other planes.
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42
AAIJ 2020AL search for long-lived ${{\mathit X}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ decays in 5.1 fb${}^{-1}$ of LHCb data at 13 TeV; no signal; limits placed on m(${{\mathit X}}$) up to 3 GeV depending on kinetic mixing.
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43
BALL 2020 search for long-lived milli-charged particles produced at LHC; limits placed in charge vs. mass plane (Fig. 8).
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44
AABOUD 2019AE search for long-lived particles via displaced jets using 10.8 fb${}^{-1}$ or 33.0 fb${}^{-1}$ data (depending on a trigger) at 13 TeV; no signal found and limits set in branching ratio vs. decay length plane.
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45
AABOUD 2019AK searches for long-lived particle ${{\mathit Z}_{{{d}}}}$ via ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Phi}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}_{{{d}}}}$ at 13 TeV with 36.1 fb${}^{-1}$; no signal found and limits set in ${{\mathit \sigma}}{\times }$BR vs. lifetime plane for simplified model.
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46
AABOUD 2019AM search for Drell-Yan (DY) production of long-lived multi-charge particles at 13 TeV with 36.1 fb${}^{-1}$ of data; no signal found and exclude 50 GeV $<$ m(LLMCP) $<$ $980 - 1220$ GeV for electric charge $\vert $q$\vert $ = ($2 - 7$)e.
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47
AABOUD 2019AO search for neutral long-lived particles producing displaced jets at 13 TeV with 36.1 fb${}^{-1}$ of data; no signal found and exclude regions of ${{\mathit \sigma}}\cdot{}$BR vs. lifetime plane for various models.
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48
AABOUD 2019AT search for heavy, charged long-lived particles at 13 TeV with 36.1 fb${}^{-1}$; no signal found and upper limits set on masses of various hypothetical particles.
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49
AABOUD 2019G search for long-lived particle with decay to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ at 13 TeV with 32.9 fb${}^{-1}$; no signal found and limits set in combinations of lifetime, mass and coupling planes for various simplified models.
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50
SIRUNYAN 2019BH search for long-lived SUSY particles via displaced jets at 13 TeV with 35.9 fb${}^{-1}$; no signal found and limits placed in mass vs lifetime plane for various hypothetical models.
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51
SIRUNYAN 2019BT search for displaced jet(s)+$\not E_T$ at 13 TeV with 137 fb${}^{-1}$; no signal found and limits placed in mass vs lifetime plane for gauge mediated SUSY breaking models.
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52
SIRUNYAN 2019CA search for gluino/squark decay to long-lived neutralino, decay to ${{\mathit \gamma}}$ in GMSB; no signal, limits placed in m(${{\mathit \chi}}$) vs. lifetime plane for SPS8 GMSB benchmark point.
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53
SIRUNYAN 2019Q search for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit j}}$ + displaced jet via dark quark with 13 TeV at 16.1 fb${}^{-1}$; no signal found and limits set in mass vs lifetime plane for dark quark/dark pion model.
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54
SIRUNYAN 2018AW search for very long lived particles (LLPs) decaying hadronically or to ${{\mathit \mu}}{{\overline{\mathit \mu}}}$ in CMS detector; none seen/limits set on lifetime vs. cross section.
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55
AAIJ 2016AR search for long lived particles from ${{\mathit H}}$ $\rightarrow$ ${{\mathit X}}{{\mathit X}}$ with displaced ${{\mathit X}}$ decay vertex using 0.62 fb${}^{-1}$ at 7 TeV; limits set in Fig. 7.
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56
KHACHATRYAN 2016BW search for heavy stable charged particles via ToF with 2.5 fb${}^{-1}$ at 13 TeV; require stable m(gluinoball) $>$ 1610 GeV.
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57
BADIER 1986 looked for long-lived particles at 300 GeV ${{\mathit \pi}^{-}}$ beam dump. The limit applies for nonstrongly interacting neutral or charged particles with mass $>$2 GeV. The limit applies for particle modes, ${{\mathit \mu}^{+}}{{\mathit \pi}^{-}}$, ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$, ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ X, ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{\pm}}$ etc. See their figure 5 for the contours of limits in the mass-$\tau $ plane for each mode.
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