Evidence for Anomalous Lepton Production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mo>−</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Annihilation
M. L. PerlStanford Synchrotron Radiation LightsourceG. S. AbramsStanford Synchrotron Radiation LightsourceA. M. BoyarskiStanford Linear Accelerator Center; University of California at BerkeleyM. BreidenbachStanford Linear Accelerator Center; University of California at BerkeleyD. BriggsStanford Linear Accelerator Center; University of California at BerkeleyF. BulosStanford Linear Accelerator Center; University of California at BerkeleyW. ChinowskyStanford Linear Accelerator Center; University of California at BerkeleyJames T. DakinStanford Linear Accelerator Center; University of California at Berkeley; University of MassachusettsG. J. FeldmanStanford Synchrotron Radiation LightsourceC. E. FriedbergStanford Linear Accelerator Center; University of California at BerkeleyD. FrybergerStanford Linear Accelerator Center; University of California at BerkeleyG. GoldhaberStanford Synchrotron Radiation LightsourceG. HansonStanford Linear Accelerator Center; University of California at BerkeleyF. B. HeileStanford Synchrotron Radiation LightsourceB. Jean-MarieStanford Linear Accelerator Center; University of California at BerkeleyJ. A. KadykStanford Synchrotron Radiation LightsourceR. R. LarsenStanford Synchrotron Radiation LightsourceA. M. LitkeStanford Linear Accelerator Center; University of California at BerkeleyD. LükeStanford Linear Accelerator Center; University of California at BerkeleyB. A. LuluStanford Synchrotron Radiation LightsourceV. LüthStanford Synchrotron Radiation LightsourceD. LyonStanford Linear Accelerator Center; University of California at BerkeleyC. C. MorehouseStanford Linear Accelerator Center; University of California at BerkeleyJ. M. PatersonStanford Synchrotron Radiation LightsourceF. PierreStanford Linear Accelerator Center; University of California at Berkeley; Université Paris-SaclayT. P. PunStanford Synchrotron Radiation LightsourceP. A. RapidisStanford Linear Accelerator Center; University of California at BerkeleyB. RichterStanford Synchrotron Radiation LightsourceB. SadouletStanford Synchrotron Radiation LightsourceR. F. SchwittersStanford Linear Accelerator Center; University of California at BerkeleyW. TanenbaumStanford Synchrotron Radiation LightsourceG. H. TrillingStanford Linear Accelerator Center; University of California at BerkeleyF. VannucciStanford Synchrotron Radiation LightsourceJ. S. WhitakerStanford Linear Accelerator Center; University of California at BerkeleyF.C. WinkelmannStanford Linear Accelerator Center; University of California at BerkeleyJ. WissLawrence Berkeley Laboratory and Department of Physics, University of California, Berkeley, California 94720
1975lv
ABI
Annotatsiya
We have found events of the form ${e}^{+}+{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{\ifmmode\pm\else\textpm\fi{}}+{\ensuremath{\mu}}^{\ensuremath{\mp}}+\mathrm{missing}\mathrm{energy}$, in which no other charged particles or photons are detected. Most of these events are detected at or above a center-of-mass energy of 4 GeV. The missing-energy and missing-momentum spectra require that at least two additional particles be produced in each event. We have no conventional explanation for these events.
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