Search for a nearly degenerate lepton doublet (L-,L0)
We have searched for a heavy charged lepton with an associated neutrino of nearly the same mass in {ital e}{sup +}{ital e}{sup {minus}} annihilation data taken with the Mark II detector at a center-of-mass energy of 29 GeV. In order to suppress contamination from conventional two-photon reactions, t...
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| Veröffentlicht in: | Physical review. D, Particles and fields Particles and fields, 1990-07, Vol.42 (1), p.1-9 |
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| creator | Riles, K Perl, ML Barklow, T Boyarski, A Burchat, PR Burke, DL Dorfan, JM Feldman, GJ Gladney, L Hanson, G Hayes, K Hollebeek, RJ Innes, WR Jaros, JA Karlen, D Klein, SR Lankford, AJ Larsen, RR LeClaire, BW Lockyer, NS Lüth, V, V Ong, RA Richter, B Yelton, JM Abrams, G Amidei, D Baden, AR Boyer, J Butler, F Gidal, G Gold, MS Goldhaber, G Golding, L Haggerty, J Herrup, D Juricic, I, I Kadyk, JA Levi, ME Nelson, ME Rowson, PC Schellman, H Schmidke, WB Sheldon, PD Trilling, GH Wood, DR Schaad, T |
| description | We have searched for a heavy charged lepton with an associated neutrino of nearly the same mass in {ital e}{sup +}{ital e}{sup {minus}} annihilation data taken with the Mark II detector at a center-of-mass energy of 29 GeV. In order to suppress contamination from conventional two-photon reactions, this analysis uses a novel, radiative-tagging technique. Requiring the presence of an isolated, energetic photon allows a search for lepton doublets with mass splittings smaller than that previously accessible to experiment. No evidence for such a new lepton doublet has been found, enabling limits to be placed on allowed mass combinations. Mass splittings as low as 250--400 MeV/{ital c}{sup 2} are excluded for charged-lepton masses between 500 MeV/{ital c}{sup 2} and 10 GeV/{ital c}{sup 2}. |
| doi_str_mv | 10.1103/PhysRevD.42.1 |
| format | Article |
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D, Particles and fields</title><addtitle>Phys Rev D Part Fields</addtitle><description>We have searched for a heavy charged lepton with an associated neutrino of nearly the same mass in {ital e}{sup +}{ital e}{sup {minus}} annihilation data taken with the Mark II detector at a center-of-mass energy of 29 GeV. In order to suppress contamination from conventional two-photon reactions, this analysis uses a novel, radiative-tagging technique. Requiring the presence of an isolated, energetic photon allows a search for lepton doublets with mass splittings smaller than that previously accessible to experiment. No evidence for such a new lepton doublet has been found, enabling limits to be placed on allowed mass combinations. 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Perl, ML ; Barklow, T ; Boyarski, A ; Burchat, PR ; Burke, DL ; Dorfan, JM ; Feldman, GJ ; Gladney, L ; Hanson, G ; Hayes, K ; Hollebeek, RJ ; Innes, WR ; Jaros, JA ; Karlen, D ; Klein, SR ; Lankford, AJ ; Larsen, RR ; LeClaire, BW ; Lockyer, NS ; Lüth, V, V ; Ong, RA ; Richter, B ; Yelton, JM ; Abrams, G ; Amidei, D ; Baden, AR ; Boyer, J ; Butler, F ; Gidal, G ; Gold, MS ; Goldhaber, G ; Golding, L ; Haggerty, J ; Herrup, D ; Juricic, I, I ; Kadyk, JA ; Levi, ME ; Nelson, ME ; Rowson, PC ; Schellman, H ; Schmidke, WB ; Sheldon, PD ; Trilling, GH ; Wood, DR ; Schaad, T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c357t-b48b9425c57e0a3416b5fc080b35d645ba6d95be85c0062259c3cceb8d5ee4073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>640106 -- Astrophysics & Cosmology-- Cosmology</topic><topic>645101 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties</topic><topic>ANNIHILATION</topic><topic>BASIC INTERACTIONS</topic><topic>BRANCHING RATIO</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>CORRECTIONS</topic><topic>CROSS SECTIONS</topic><topic>ELECTROMAGNETIC INTERACTIONS</topic><topic>ELECTRON-POSITRON INTERACTIONS</topic><topic>ELEMENTARY PARTICLES</topic><topic>ENERGY DENSITY</topic><topic>ENERGY RANGE</topic><topic>FERMIONS</topic><topic>GEV RANGE</topic><topic>GEV RANGE 10-100</topic><topic>INTERACTIONS</topic><topic>LEPTON-LEPTON INTERACTIONS</topic><topic>LEPTONS</topic><topic>LIFETIME</topic><topic>MASS DIFFERENCE</topic><topic>MASSLESS PARTICLES</topic><topic>NEUTRINOS</topic><topic>PARTICLE IDENTIFICATION</topic><topic>PARTICLE INTERACTIONS</topic><topic>PARTICLE PRODUCTION</topic><topic>PARTICLE PROPERTIES 645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties</topic><topic>PHOTONS</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><topic>RADIATIVE CORRECTIONS</topic><topic>UNIVERSE</topic><toplevel>online_resources</toplevel><creatorcontrib>Riles, K</creatorcontrib><creatorcontrib>Perl, ML</creatorcontrib><creatorcontrib>Barklow, T</creatorcontrib><creatorcontrib>Boyarski, A</creatorcontrib><creatorcontrib>Burchat, PR</creatorcontrib><creatorcontrib>Burke, DL</creatorcontrib><creatorcontrib>Dorfan, JM</creatorcontrib><creatorcontrib>Feldman, GJ</creatorcontrib><creatorcontrib>Gladney, L</creatorcontrib><creatorcontrib>Hanson, G</creatorcontrib><creatorcontrib>Hayes, K</creatorcontrib><creatorcontrib>Hollebeek, RJ</creatorcontrib><creatorcontrib>Innes, WR</creatorcontrib><creatorcontrib>Jaros, JA</creatorcontrib><creatorcontrib>Karlen, D</creatorcontrib><creatorcontrib>Klein, SR</creatorcontrib><creatorcontrib>Lankford, AJ</creatorcontrib><creatorcontrib>Larsen, RR</creatorcontrib><creatorcontrib>LeClaire, BW</creatorcontrib><creatorcontrib>Lockyer, NS</creatorcontrib><creatorcontrib>Lüth, V, V</creatorcontrib><creatorcontrib>Ong, RA</creatorcontrib><creatorcontrib>Richter, B</creatorcontrib><creatorcontrib>Yelton, JM</creatorcontrib><creatorcontrib>Abrams, G</creatorcontrib><creatorcontrib>Amidei, D</creatorcontrib><creatorcontrib>Baden, AR</creatorcontrib><creatorcontrib>Boyer, J</creatorcontrib><creatorcontrib>Butler, F</creatorcontrib><creatorcontrib>Gidal, G</creatorcontrib><creatorcontrib>Gold, MS</creatorcontrib><creatorcontrib>Goldhaber, G</creatorcontrib><creatorcontrib>Golding, L</creatorcontrib><creatorcontrib>Haggerty, J</creatorcontrib><creatorcontrib>Herrup, D</creatorcontrib><creatorcontrib>Juricic, I, I</creatorcontrib><creatorcontrib>Kadyk, JA</creatorcontrib><creatorcontrib>Levi, ME</creatorcontrib><creatorcontrib>Nelson, ME</creatorcontrib><creatorcontrib>Rowson, PC</creatorcontrib><creatorcontrib>Schellman, H</creatorcontrib><creatorcontrib>Schmidke, WB</creatorcontrib><creatorcontrib>Sheldon, PD</creatorcontrib><creatorcontrib>Trilling, GH</creatorcontrib><creatorcontrib>Wood, DR</creatorcontrib><creatorcontrib>Schaad, T</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Physical review. 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Mass splittings as low as 250--400 MeV/{ital c}{sup 2} are excluded for charged-lepton masses between 500 MeV/{ital c}{sup 2} and 10 GeV/{ital c}{sup 2}.</abstract><cop>United States</cop><pmid>10012691</pmid><doi>10.1103/PhysRevD.42.1</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0556-2821 |
| ispartof | Physical review. D, Particles and fields, 1990-07, Vol.42 (1), p.1-9 |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | 640106 -- Astrophysics & Cosmology-- Cosmology 645101 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties ANNIHILATION BASIC INTERACTIONS BRANCHING RATIO CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CORRECTIONS CROSS SECTIONS ELECTROMAGNETIC INTERACTIONS ELECTRON-POSITRON INTERACTIONS ELEMENTARY PARTICLES ENERGY DENSITY ENERGY RANGE FERMIONS GEV RANGE GEV RANGE 10-100 INTERACTIONS LEPTON-LEPTON INTERACTIONS LEPTONS LIFETIME MASS DIFFERENCE MASSLESS PARTICLES NEUTRINOS PARTICLE IDENTIFICATION PARTICLE INTERACTIONS PARTICLE PRODUCTION PARTICLE PROPERTIES 645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties PHOTONS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS RADIATIVE CORRECTIONS UNIVERSE |
| title | Search for a nearly degenerate lepton doublet (L-,L0) |
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