• • • 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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CMS |
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4 |
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ATLS |
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5 |
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ATLS |
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6 |
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LHCB |
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7 |
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NA64 |
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8 |
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NA64 |
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9 |
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E137 |
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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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CMS |
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16 |
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ATLS |
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17 |
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LHCB |
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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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21 |
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BABR |
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22 |
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KTEV |
$<10^{-36} - 10^{-33}$ |
90 |
23 |
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TOF |
$<(4 - 0.3){\times }\text{ 10^}{-31}$ |
95 |
24 |
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CNTR |
$<2 \times 10^{-36}$ |
90 |
25 |
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BDMP |
$<2.5 \times 10^{-35}$ |
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26 |
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CNTR |
1
AABOUD 2019H searches for di-photon-jet resonance at 13 TeV and 36.7 fb${}^{-1}$ of data; no signal found and limits placed on ${{\mathit \sigma}}\cdot{}$BR vs. mass plane for various simplified models.
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2
AABOUD 2019V review ATLAS searches for mediator-based DM at 7, 8, and 13 TeV with up to 37 fb${}^{-1}$ of data; no signal found and limits set for wide variety of simplified models of dark matter.
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3
SIRUNYAN 2019O search for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}$ $\not E_T$ at 13 TeV with 36.1 fb${}^{-1}$; no signal found and limits set for various simplified models.
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4
AABOUD 2018CJ make multichannel search for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit V}}{{\mathit V}}$ $/$ ${{\mathit \ell}}{{\mathit \ell}}$ $/$ ${{\mathit \ell}}{{\mathit \nu}}$ , ${{\mathit V}}$ = ${{\mathit W}},{{\mathit Z}},{{\mathit h}}$ at 13 TeV, 36.1 fb${}^{-1}$; no signal found; limits placed for several BSM models.
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5
AABOUD 2018CM search for lepton-flavor violating resonance in ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}}{{\mathit \mu}}$ $/$ ${{\mathit e}}{{\mathit \tau}}$ $/$ ${{\mathit \mu}}{{\mathit \tau}}$ at 13 TeV, 36.1 fb${}^{-1}$; no signal is found and limits placed for various BSM models.
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6
AAIJ 2018AJ search for prompt and delayed dark photon decay ${{\mathit A}^{\,'}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ at LHCb detector using 1.6 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at 13 TeV; limits on m(${{\mathit A}^{\,'}}$) vs. kinetic mixing are set.
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7
BANERJEE 2018 search for dark photon ${{\mathit A}^{\,'}}$/16.7 MeV boson ${{\mathit X}}$ at NA64 via ${{\mathit e}}$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit e}}{{\mathit Z}}{{\mathit X}}$( ${{\mathit A}^{\,'}}$); no signal found and limits set on the ${{\mathit X}}-{{\mathit e}^{-}}$ coupling ${{\mathit \epsilon}_{{e}}}$ in the range $1.3 \times 10^{-4}{}\leq{}{{\mathit \epsilon}_{{e}}}{}\leq{}4.2 \times 10^{-4}$ excluding part of the allowed parameter space.
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8
BANERJEE 2018A search for invisibly decaying dark photons in ${{\mathit e}}$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit e}}{{\mathit Z}}{{\mathit A}^{\,'}}$ , ${{\mathit A}^{\,'}}$ $\rightarrow$ invisible; no signal found and limits set on mixing for m(${{\mathit A}^{\,'}}$) $<$ 1 GeV.
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9
MARSICANO 2018 search for dark photon ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit A}^{\,'}}$( ${{\mathit \gamma}}$) visible decay in SLAC E137 ${{\mathit e}}$ beam dump data. No signal observed and limits set in ${{\mathit \epsilon}}$ coupling vs m(${{\mathit A}^{\,'}}$) plane, see their figure 7.
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10
SIRUNYAN 2018BB search for high mass dilepton resonance; no signal found and exclude portions of p-space of ${{\mathit Z}^{\,'}}$, KK graviton models.
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11
SIRUNYAN 2018DA search for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ Black Hole, string ball, sphaleron via high multiplicity events at 13 TeV, 35.9 fb${}^{-1}$; no signal, require e.g. m(BH) $>$ 10.1 TeV.
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12
SIRUNYAN 2018DD search for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit j}}{{\mathit j}}$ deviations in dijet angular distribution. No signal observed. Set limits on large extra dimensions, black holes and DM mediators e.g. m(BH) $>$ $5.9 - 8.2$ TeV.
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13
SIRUNYAN 2018DR search for dimuon resonance in ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit b}}{{\mathit \mu}}{{\overline{\mathit \mu}}}$ at 8 and 13 TeV. Slight excess seen at m( ${{\mathit \mu}}{{\overline{\mathit \mu}}}$ ) $\sim{}$ 28 GeV in some channels.
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14
SIRUNYAN 2018DU search for high mass diphoton resonance in ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ at 13 TeV using 35.9 fb${}^{-1}$; no signal; limits placed on RS Graviton, LED, and clockwork.
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15
SIRUNYAN 2018ED search for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit V}}$ $\rightarrow$ ${{\mathit W}}{{\mathit h}}$ ; ${{\mathit h}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ ; ${{\mathit W}}$ $\rightarrow$ ${{\mathit \ell}}{{\mathit \nu}}$ at 13 TeV with 35.9 fb${}^{-1}$; no signal; limits set on m(${{\mathit W}^{\,'}}$) $>$ 2.9 TeV.
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16
AABOUD 2017B exclude m(${{\mathit W}^{\,'}}$, ${{\mathit Z}^{\,'}}$) $<1.49 - 2.31$ TeV depending on the couplings and ${{\mathit W}^{\,'}}/{{\mathit Z}^{\,'}}$ degeneracy assumptions via ${{\mathit W}}{{\mathit H}}$ , ${{\mathit Z}}{{\mathit H}}$ search in ${{\mathit p}}{{\mathit p}}$ collisions at 13 TeV with 3.2$~$fb${}^{-1}$ of data.
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17
AAIJ 2017BR search for long-lived hidden valley pions from Higgs decay. Limits are set on the signal strength as a function of the mass and lifetime of the long-lived particle in their Fig. 4 and Tab. 4.
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18
AAD 2016O search for high $\mathit E_{T}{{\mathit \ell}}$ + (${{\mathit \ell}}$s or jets) with 3.2 fb${}^{-1}$ at 13 TeV; exclude micro black holes mass $<$ 8 TeV (Fig. 3) for models with two extra dimensions.
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19
AAD 2016R search for ${{\mathit W}}{{\mathit W}}$ , ${{\mathit W}}{{\mathit Z}}$ , resonance in 20.3 fb${}^{-1}$ at 8 TeV data; limits placed on massive RS graviton (Fig. 4).
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20
KRASZNAHORKAY 2016 report ${{\mathit p}}$ ${}^{7}{}^{}\mathrm {Li}$ $\rightarrow$ ${}^{8}{}^{}\mathrm {Be}$ $\rightarrow$ ${{\mathit e}}$ ${{\overline{\mathit e}}}$ ${{\mathit N}}$ 5${{\mathit \sigma}}$ resonance at 16.7 MeV-- possible evidence for nuclear interference or new light boson . However, such nuclear interference was ruled out already by ZANG 2017 .
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21
LEES 2015E search for long-lived neutral particles produced in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ collisions in the Upsilon region, which decays into ${{\mathit e}^{+}}{{\mathit e}^{-}}$ , ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ , ${{\mathit e}^{\pm}}{{\mathit \mu}^{\mp}}$ , ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , or ${{\mathit \pi}^{\pm}}{{\mathit K}^{\mp}}$ . See their Fig. 2 for cross section limits.
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22
ADAMS 1997B search for a hadron-like neutral particle produced in ${{\mathit p}}{{\mathit N}}$ interactions, which decays into a ${{\mathit \rho}^{0}}$ and a weakly interacting massive particle. Upper limits are given for the ratio to ${{\mathit K}_{{L}}}~$production for the mass range $1.2 - 5$ GeV and lifetime $10^{-9} - 10^{-4}~$s. See also our Light Gluino Section.
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23
GALLAS 1995 limit is for a weakly interacting neutral particle produced in 800 GeV/$\mathit c$ ${{\mathit p}}{{\mathit N}}$ interactions decaying with a lifetime of $10^{-4} - 10^{-8}~$s. See their Figs.$~$8 and 9. Similar limits are obtained for a stable particle with interaction cross section $10^{-29} - 10^{-33}$ cm${}^{2}$. See Fig.$~$10.
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24
AKESSON 1991 limit is from weakly interacting neutral long-lived particles produced in ${{\mathit p}}{{\mathit N}}$ reaction at 450 GeV/$\mathit c$ performed at CERN$~$SPS. Bourquin-Gaillard formula is used as the production model. The above limit is for $\tau ~>~10^{-7}~$s. For $\tau ~>~10^{-9}~$s, $\sigma ~<~10^{-30}~$cm${}^{−2}$/nucleon is obtained.
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25
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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26
GUSTAFSON 1976 is a 300 GeV FNAL experiment looking for heavy ($\mathit m$ $>$2 GeV) long-lived neutral hadrons in the M4 neutral beam. The above typical value is for $\mathit m$ = 3 GeV and assumes an interaction cross section of 1 mb. Values as a function of mass and interaction cross section are given in figure 2.
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