Observation of Ξ− production in pp interactions at 540 GeV CMS energy
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Observation of Ξ− production in pp interactions at 540 GeV CMS energy

G.J. Alner,K. Alpgård,P. Anderer,R.E. Ansorge,B. Asman,K. Böckmann,C.N. Booth,L. Burow,P. Carlson,J.-L. Chevalley,C. Declercq,R.S. DeWolf,B. Eckart,G. Ekspong,I. Evangelou,A. Eyring,J.-P. Fabre,K.A. French,J. Gaudaen,C. Geich-Gimbel,K. Von Holt,R. Hospes,D. Johnson,K. Jon-And,Th. Kokott,M. Langer,F. Lotse,R. MacKenzie,R. Meinke,Th. Müller,D.J. Munday,J.E.V. Ovens,J.G. Rushbrooke,H. Schmickler,F. Triantis,L. Van Hamme,Ch. Walck,C.P. Ward,D.R. Ward,T.O. White,G. Wilquet,N. Yamdagni;G.J. Alner;K. Alpgård;P. Anderer;R.E. Ansorge;B. Asman;K. Böckmann;C.N. Booth;L. Burow;P. Carlson;J.-L. Chevalley;C. Declercq;R.S. DeWolf;B. Eckart;G. Ekspong;I. Evangelou;A. Eyring;J.-P. Fabre;K.A. French;J. Gaudaen;C. Geich-Gimbel;K. Von Holt;R. Hospes;D. Johnson;K. Jon-And;Th. Kokott;M. Langer;F. Lotse;R. MacKenzie;R. Meinke;Th. Müller;D.J. Munday;J.E.V. Ovens;J.G. Rushbrooke;H. Schmickler;F. Triantis;L. Van Hamme;Ch. Walck;C.P. Ward;D.R. Ward;T.O. White;G. Wilquet;N. Yamdagni;
physics letters b 1985 Vol. 151 pp. 309-314
226
yamdagni1985physicsobservation

Abstract

We have made the first observations of Ξ− production in pp interactions at √s=540 GeV. In a sample of 6964 non single-diffractive events we observe 17 Ξ− decays with an estimated background of less than one event. This corresponds to 0.04 ± 0.01 Ξ− per event in the transverse momentum range pt>1.0 GeV/c and in the pseudorapidity range |η| < 3.5. Assuming an exponential pt distribution, we find 〈pt〉=1.1−0.2+0.3 GeV/c.

Keywords

cms made gev transverse exponential pseudorapidity corresponds

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DOI:
10.1016/0370-2693(85)90859-7
URL:
https://sciprofiles.com/publication/view/ce97c9d6a...

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