Limits for Excited ${{\boldsymbol \mu}}$ (${{\boldsymbol \mu}^{*}}$) from Single Production INSPIRE search

These limits are from ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{*}}{{\mathit \mu}}$ and depend on transition magnetic coupling between ${{\mathit \mu}}$ and ${{\mathit \mu}^{*}}$. All limits assume ${{\mathit \mu}^{*}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \gamma}}$ decay. Limits from LEP are for chiral coupling, whereas all other limits are for nonchiral coupling, ${{\mathit \eta}_{{L}}}$ = ${{\mathit \eta}_{{R}}}$ = 1. In most papers, the limit is expressed in the form of an excluded region in the $\lambda −{\mathit m}_{{{\mathit \mu}^{*}}}$ plane. See the original papers.

For limits prior to 1987, see our 1992 edition (Physical Review D45 S1 (1992)).
VALUE (GeV) CL% DOCUMENT ID TECN  COMMENT
$\bf{> 3000}$ 95 1
AAD
2015AP
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \mu}^{(*)}}{{\mathit \mu}^{*}}{{\mathit X}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$> 2800$ 95 2
AAD
2016BM
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \mu}^{*}}{{\mathit X}}$
$> 2470$ 95 3
KHACHATRYAN
2016AQ
CMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \mu}^{*}}{{\mathit X}}$
$> 2200$ 95 4
AAD
2013BB
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \mu}^{*}}{{\mathit X}}$
$> 1900$ 95 5
CHATRCHYAN
2013AE
CMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \mu}^{*}}{{\mathit X}}$
$> 1750$ 95 6
AAD
2012AZ
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \mu}^{(*)}}{{\mathit \mu}^{*}}{{\mathit X}}$
1  AAD 2015AP search for ${{\mathit \mu}^{*}}$ production in evens with three or more charged leptons in ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV. The quoted limit assumes ${{\mathit \Lambda}}$ = ${\mathit m}_{{{\mathit \mu}^{*}}}$, ${{\mathit f}}$ = ${{\mathit f}^{\,'}}$ = 1. The contact interaction is included in the ${{\mathit \mu}^{*}}$ production and decay amplitudes.
2  AAD 2016BM search for ${{\mathit \mu}^{*}}$ production in ${{\mathit \mu}}{{\mathit \mu}}{{\mathit j}}{{\mathit j}}$ events in ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV. Both the production and decay are assumed to occur via a contact interaction with $\Lambda $ = ${\mathit m}_{{{\mathit \mu}^{*}}}$.
3  KHACHATRYAN 2016AQ search for single ${{\mathit \mu}^{*}}$ production in ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV. The limit above is from the ${{\mathit \mu}^{*}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \gamma}}$ search channel assuming ${{\mathit f}}$ = ${{\mathit f}^{\,'}}$ = 1, ${\mathit m}_{{{\mathit \mu}^{*}}}$ = $\Lambda $. See their Table 7 for limits in other search channels or with different assumptions.
4  AAD 2013BB search for single ${{\mathit \mu}^{*}}$ production in ${{\mathit p}}{{\mathit p}}$ collisions with ${{\mathit \mu}^{*}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \gamma}}$ decay. ${{\mathit f}}$ = ${{\mathit f}^{\,'}}$ = 1, and ${{\mathit \mu}^{*}}$ production via contact interaction with ${{\mathit \Lambda}}$ = ${\mathit m}_{{{\mathit \mu}^{*}}}$ are assumed.
5  CHATRCHYAN 2013AE search for single ${{\mathit \mu}^{*}}$ production in ${{\mathit p}}{{\mathit p}}$ collisions with ${{\mathit \mu}^{*}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \gamma}}$ decay. ${{\mathit f}}$ = ${{\mathit f}^{\,'}}$ = 1, and ${{\mathit \mu}^{*}}$ production via contact interaction with ${{\mathit \Lambda}}$ = ${\mathit m}_{{{\mathit \mu}^{*}}}$ are assumed.
6  AAD 2012AZ search for ${{\mathit \mu}^{*}}$ production via four-fermion contact interaction in ${{\mathit p}}{{\mathit p}}$ collisions with ${{\mathit \mu}^{*}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \gamma}}$ decay. The quoted limit assumes ${{\mathit \Lambda}}$ = ${\mathit m}_{{{\mathit \mu}^{*}}}$. See their Fig. 8 for the exclusion plot in the mass-coupling plane.
  References:
AAD 2016BM
NJP 18 073021 A Search for an Excited Muon Decaying to a Muon and Two Jets in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector
KHACHATRYAN 2016AQ
JHEP 1603 125 Search for Excited Leptons in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV
AAD 2015AP
JHEP 1508 138 Search for New Phenomena in Events with Three or More Charged Leptons in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector
AAD 2013BB
NJP 15 093011 Search for Excited Electrons and Muons in $\sqrt {s }$ = 8 TeV Proton$−$Proton Collisions with the ATLAS Detector
CHATRCHYAN 2013AE
PL B720 309 Search for Excited Leptons in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV
AAD 2012AZ
PR D85 072003 Search for Excited Leptons in Proton$−$Proton Collisions at $\sqrt {s }$ = 7 TeV with the ATLAS Detector