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A search for heavy leptons at HERA

Technical Report:

Abstract

A search for direct production of new leptons in the mass range from 10 GeV up to 225 GeV is presented by the H1 experiment at HERA. The data were obtained during 1993 and correspond to an integrated luminosity of 528 nb{sup -1}. The search includes heavy lepton decays to final states e({nu}){gamma} and e({nu})W, e({nu})Z with the subsequent decay of the W and Z bosons into jets or lepton pairs. No evidence was found for the production of new massive electrons or neutrinos in any of the decay channels. Rejection limits for excited electrons and neutrinos are derived. (orig.)
Authors:
Ahmed, T; Aid, S; Andreev, V; Andrieu, B; Appuhn, R D; Arpagaus, M; Babaev, A; Baehr, J; Ban, J; Baranov, P; Barrelet, E; Bartel, W; Barth, M; Bassler, U; Beck, H P; Behrend, H J; Belousov, A; Berger, C; Bergstein, H; Bernardi, G; Bernet, R; Bertrand-Coremans, G; Besancon, M; Biddulph, P; Bizot, J C; Blobel, V; Borras, K; Botterweck, F; Boudry, V; Braemer, A; Brasse, F; Braunschweig, W; Brisson, V; Bruncko, D; Brune, C; Buchholz, R; Buengener, L; Buerger, J; Buesser, F W; Buniatian, A; Burke, S; Buschhorn, G; Campbell, A J; Carli, T; Charles, F; Clarke, D; Clegg, A B; Colombo, M; Contreras, J B; Coughlan, J A; Courau, A; Coutures, C; Cozzika, G; Criegee, L; Cussans, D G; Cvach, J; Dagoret, S; Dainton, J B; Danilov, M; Dau, W D; Daum, K; David, M; Deffur, E; Delcourt, B; Del Buono, L; Roeck, A de; Wolf, E.A. de; Di Nezza, P; Dollfus, C; Dowell, J D; Dreis, H B; Duboc, J; Duellmann, D; Duenger, O; Duhm, H; Ebert, J; Ebert, T R; Eckerlin, G; Efremenko, V; Egli, S; Ehrlichmann, H; Eichenberger, S; Eichler, R; Eisele, F; Eisenhandler, E; Ellison, R J; Elsen, E; Erdmann, M; Evrard, E; Favart, L; Fedotov, A; Feeken, D; Felst, R; Feltesse, J; Ferencei, J; Ferrarotto, F; Flamm, K; Fleischer, M; Flieser, M; Fluegge, G; Fomenko, A; Fominykh, B; Forbush, M; Formanek, J; Foster, J M; Franke, G; Fretwurst, E; Gabathuler, E; Gabathuler, K; Gamerdinger, K; Garvey, J; Gayler, J; Gebauer, M; Gellrich, A; Genzel, H; Gerhards, R; Goerlach, U; Goerlich, L; Gogitidze, N; Goldberg, M; Goldner, D; Gonzalez-Pineiro, B; Goodall, A M; Gorelov, I; Goritchev, P; Grab, C; Graessler, H; Graessler, R; Greenshaw, T; Grindhammer, G; Gruber, C; Haack, J; Haidt, D; Hajduk, L; Hamon, O; Hampel, M; Hanlon, E M; Hapke, M; Haynes, W J; Heatherington, J; Hedberg, V; Heinzelmann, G; Henderson, R C.W.; Henschel, H; Herma, R; Herynek, I; Hess, M F; H1 Collaboration
Publication Date:
Aug 01, 1994
Product Type:
Technical Report
Report Number:
DESY-94-138
Reference Number:
SCA: 662330; PA: DEN-94:0FO774; EDB-95:025803; SN: 95001313808
Resource Relation:
Other Information: PBD: Aug 1994
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON-PROTON INTERACTIONS; INCLUSIVE INTERACTIONS; HEAVY LEPTONS; EXPERIMENTAL DATA; EFFECTIVE MASS; GEV RANGE 100-1000; INTEGRAL CROSS SECTIONS; Z NEUTRAL BOSONS; POSITRONS; MASS SPECTRA; ELECTRON ANTINEUTRINOS; PAIR PRODUCTION; QUARKS; RADIATIVE DECAY; W PLUS BOSONS; LEPTONIC DECAY; WEAK HADRONIC DECAY; W MINUS BOSONS; MULTIPLE PRODUCTION; JET MODEL; ELECTROPRODUCTION; ELECTRONS; EXCITED STATES; LIMITING VALUES; HADRONS; REST MASS; COUPLING CONSTANTS; PARTICLE WIDTHS; MAJORANA THEORY; BRANCHING RATIO; 662330; PHOTON AND CHARGED-LEPTON INTERACTIONS WITH HADRONS
OSTI ID:
10108338
Research Organizations:
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0418-9833; Other: ON: DE95732221; TRN: DE94FO774
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
19 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J B, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, Roeck, A de, Wolf, E.A. de, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, Herma, R, Herynek, I, Hess, M F, and H1 Collaboration. A search for heavy leptons at HERA. Germany: N. p., 1994. Web.
Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J B, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, Roeck, A de, Wolf, E.A. de, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, Herma, R, Herynek, I, Hess, M F, & H1 Collaboration. A search for heavy leptons at HERA. Germany.
Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J B, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, Roeck, A de, Wolf, E.A. de, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, Herma, R, Herynek, I, Hess, M F, and H1 Collaboration. 1994. "A search for heavy leptons at HERA." Germany.
@misc{etde_10108338,
title = {A search for heavy leptons at HERA}
author = {Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J B, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, Roeck, A de, Wolf, E.A. de, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, Herma, R, Herynek, I, Hess, M F, and H1 Collaboration}
abstractNote = {A search for direct production of new leptons in the mass range from 10 GeV up to 225 GeV is presented by the H1 experiment at HERA. The data were obtained during 1993 and correspond to an integrated luminosity of 528 nb{sup -1}. The search includes heavy lepton decays to final states e({nu}){gamma} and e({nu})W, e({nu})Z with the subsequent decay of the W and Z bosons into jets or lepton pairs. No evidence was found for the production of new massive electrons or neutrinos in any of the decay channels. Rejection limits for excited electrons and neutrinos are derived. (orig.)}
place = {Germany}
year = {1994}
month = {Aug}
}