A search for relativistic particles with fractional electric charge at the Cern pp collider

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ID: 270241
1983
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Abstract
A search for relativistic particles with fractional electric charge has been performed at the CERN pp collider using a telescope of scintillation counters to detect particles with abnormally low ionisation. The thickness of the detector (∼40 gr cm−2) limits this search to particles without strong absorption in matter. No evidence for such particles has been found. This negative result is used to set an upper limit for the ratio of quark yield to that of particles with unit electric charge. For quark masses below 2 GeV/c2 the 90% confidence level upper limits range from 2 × 10−4 to 2.5 × 10−3 depending on the quark mass and elect́ric charge.
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Authors M. Banner,Ph. Bloch,F. Bonaudi,K. Borer,M. Borghini,J.-C. Chollet,A.G. Clark,C. Conta,P. Darriulat,L. Di Lella,L. Dines-Hansen,P.-A. Dorsaz,L. Fayard,M. Fraternali,D. Froidevaux,J.-M. Gaillard,O. Gildemeister,V.G. Goggi,H. Grote,B. Hahn,H. Hänni,J.R. Hansen,P. Hansen,T. Himel,V. Hungerbühler,P. Jenni,O. Kofoed-Hansen,M. Livan,S. Loucatos,B. Madsen,P. Mani,B. Mansoulié,G.C. Mantovani,L. Mapelli,B. Merkel,M. Mermikides,R. Møllerud,C. Onions,G. Parrour,F. Pastore,H. Plothow-Besch,J.-P. Repellin,J. Ringel,A. Rothenberg,A. Roussarie,G. Sauvage,J. Schacher,J.L. Siegrist,F. Stocker,J. Teiger,V. Vercesi,H.H. Williams,H. Zaccone,W. Zeller;M. Banner;Ph. Bloch;F. Bonaudi;K. Borer;M. Borghini;J.-C. Chollet;A.G. Clark;C. Conta;P. Darriulat;L. Di Lella;L. Dines-Hansen;P.-A. Dorsaz;L. Fayard;M. Fraternali;D. Froidevaux;J.-M. Gaillard;O. Gildemeister;V.G. Goggi;H. Grote;B. Hahn;H. Hänni;J.R. Hansen;P. Hansen;T. Himel;V. Hungerbühler;P. Jenni;O. Kofoed-Hansen;M. Livan;S. Loucatos;B. Madsen;P. Mani;B. Mansoulié;G.C. Mantovani;L. Mapelli;B. Merkel;M. Mermikides;R. Møllerud;C. Onions;G. Parrour;F. Pastore;H. Plothow-Besch;J.-P. Repellin;J. Ringel;A. Rothenberg;A. Roussarie;G. Sauvage;J. Schacher;J.L. Siegrist;F. Stocker;J. Teiger;V. Vercesi;H.H. Williams;H. Zaccone;W. Zeller;
Journal physics letters b
Year 1983
DOI
10.1016/0370-2693(83)90912-7
URL
https://sciprofiles.com/publication/view/c6b30600bfcd41e9515affc1dd3ffe34
Keywords
particle physics confidence level charged particles

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