# Production Cross Section of Radiatively-Decaying Neutral Particle INSPIRE search

VALUE (pb) CL% DOCUMENT ID TECN  COMMENT
• • • We do not use the following data for averages, fits, limits, etc. • • •
1
 2018 C
HAWC ${{\mathit \gamma}}$ from Sun
2
 2017 D
CMS ${{\mathit Z}}{{\mathit \gamma}}$ resonance
$<0.0008$ 95 3
 2016 AI
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}$ + jet
4
 2016 M
CMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ resonance
$\text{<(0.043 - 0.17)}$ 95 5
 2000 D
OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit X}^{0}}{{\mathit Y}^{0}}$ , ${{\mathit X}^{0}}$ $\rightarrow$ ${{\mathit Y}^{0}}{{\mathit \gamma}}$
$\text{<(0.05 - 0.8)}$ 95 6
 2000 D
OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit X}^{0}}{{\mathit X}^{0}}$ , ${{\mathit X}^{0}}$ $\rightarrow$ ${{\mathit Y}^{0}}{{\mathit \gamma}}$
$\text{<(2.5 - 0.5)}$ 95 7
 1997 B
OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit X}^{0}}{{\mathit Y}^{0}}$ , ${{\mathit X}^{0}}$ $\rightarrow$ ${{\mathit Y}^{0}}{{\mathit \gamma}}$
$\text{<(1.6 - 0.9)}$ 95 8
 1997 B
OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit X}^{0}}{{\mathit X}^{0}}$ , ${{\mathit X}^{0}}$ $\rightarrow$ ${{\mathit Y}^{0}}{{\mathit \gamma}}$
1  ALBERT 2018C search for WIMP annihilation in Sun to long-lived, radiatively decaying mediator; no signal; limits set on $\sigma {}^{SD}$( ${{\mathit \chi}}{{\mathit p}}$ ) assuming long-lived mediator.
2  KHACHATRYAN 2017D search for new scalar resonance decaying to ${{\mathit Z}}{{\mathit \gamma}}$ with ${{\mathit Z}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ , ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in ${{\mathit p}}{{\mathit p}}$ collisions at 8 and 13 TeV; no signal seen.
3  AAD 2016AI search for excited quarks (EQ) and quantum black holes (QBH) in 3.2 fb${}^{-1}$ at 13 TeV of data; exclude EQ below 4.4 TeV and QBH below 3.8 (6.2) TeV for RS1 (ADD) models. The visible cross section limit was obtained for 5 TeV resonance with ${{\mathit \sigma}_{{G}}}/{{\mathit M}_{{G}}}$ = 2$\%$.
4  KHACHATRYAN 2016M search for ${{\mathit \gamma}}{{\mathit \gamma}}$ resonance using 19.7 fb${}^{-1}$ at 8 TeV and 3.3 fb${}^{-1}$ at 13 Tev; slight excess at 750 GeV noted; limit set on RS graviton.
5  ABBIENDI 2000D associated production limit is for ${\mathit m}_{{{\mathit X}^{0}}}$= $90 - 188$ GeV, ${\mathit m}_{{{\mathit Y}^{0}}}$=0 at $\mathit E_{{\mathrm {cm}}}$=189 GeV. See also their Fig.$~$9.
6  ABBIENDI 2000D pair production limit is for ${\mathit m}_{{{\mathit X}^{0}}}$ = $45 - 94$ GeV, ${\mathit m}_{{{\mathit Y}^{0}}}$=0 at $\mathit E_{{\mathrm {cm}}}$=189 GeV. See also their Fig.$~$12.
7  ACKERSTAFF 1997B associated production limit is for ${\mathit m}_{{{\mathit X}^{0}}}$ = $80 - 160$ GeV, ${\mathit m}_{{{\mathit Y}^{0}}}$=0 from $10.0~$pb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 161 GeV. See their Fig.$~$3(a).
8  ACKERSTAFF 1997B pair production limit is for ${\mathit m}_{{{\mathit X}^{0}}}$ = $40 - 80$ GeV, ${\mathit m}_{{{\mathit Y}^{0}}}$=0 from $10.0~$pb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 161 GeV. See their Fig.$~$3(b).
References:
 ALBERT 2018C
PR D98 123012 Constraints on Spin-Dependent Dark Matter Scattering with Long-Lived Mediators from TeV Observations of the Sun with HAWC
 KHACHATRYAN 2017D
JHEP 1701 076 Search for High-Mass ${{\mathit Z}}{{\mathit \gamma}}$ Resonances in ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$ and ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \gamma}}$ Final States in Proton-Proton Collisions at $\sqrt {s }$ = 8 and 13 TeV
JHEP 1603 041 Search for New Phenomena with Photon $+$ Jet Events in Proton-Proton Collisions at $\sqrt {s }$ = 13 TeV with the ATLAS Detector
PRL 117 051802 Search for Resonant Production of High-Mass Photon Pairs in Proton-Proton Collisions at $\sqrt {s }$ = 8 and 13 TeV
EPJ C13 197 A Study of Three Prong ${{\mathit \tau}}$ Decays with Charged Kaons
PL B391 210 Photonic Events with Large Missing Energy in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Collisions at $\sqrt {s }$ = 161 GeV