Charged Heavy Lepton MASS LIMITS

Charged Long-Lived Heavy Lepton MASS LIMITS

INSPIRE  
VALUE (GeV) CL% DOCUMENT ID TECN CHG  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
$> 574$ 95
CHATRCHYAN
2013AB
 CMS Leptons singlet model
$>102.0$ 95
ABBIENDI
2003L
 OPAL pair produced in ${{\mathit e}^{+}}{{\mathit e}^{-}}$
$>0.1$ 1
ANSORGE
1973B
 HBC - Long-lived
$\text{none 0.55 - 4.5}$ 2
BUSHNIN
1973
CNTR - Long-lived
$\text{none 0.2 - 0.92}$ 3
BARNA
1968
CNTR - Long-lived
$\text{none 0.97 - 1.03}$ 3
BARNA
1968
CNTR - Long-lived
1  ANSORGE 1973B looks for electron pair production and electron-like Bremsstrahlung.
2  BUSHNIN 1973 is SERPUKHOV 70 GeV ${{\mathit p}}$ experiment. Masses assume mean life above $7 \times 10^{-10}$ and $3 \times 10^{-8}$ respectively. Calculated from cross section (see ``Charged Quasi-Stable Lepton Production Differential Cross Section'' below) and 30 GeV muon pair production data.
3  BARNA 1968 is SLAC photoproduction experiment.
References:
CHATRCHYAN 2013AB
JHEP 1307 122 Searches for Long-Lived Charged Particles in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 and 8 TeV
ABBIENDI 2003L
PL B572 8 Search for Stable and Longlived Massive Charged Particles in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Collisions at $\sqrt {s }$ = 130 to 209 GeV
ANSORGE 1973B
PR D7 26 Study of Electromagnetic Processes at 1 ${\mathrm {GeV/}}\mathit c$ in a Hydrogen Bubble Chamber and Production Rate Limits for New Low Mass Particles
BUSHNIN 1973
NP B58 476 Search for Heavy Quasistable Leptons
Also
PL 42B 136 Search for Heavy Quasistable Leptons
BARNA 1968
PR 173 1391 A Search for New Particles Produced by High Energy Photons