J.M. Olsen
University of Bergen
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Featured researches published by J.M. Olsen.
Physics Letters B | 1997
D. Barberis; W. Beusch; F G. Binon; J.N. Carney; F E. Close; K M. Danielsen; A.V. Dolgopolov; S V. Donskov; B.C. Earl; D. Evans; B R. French; S. Inaba; A V. Inyakin; A. Jacholkowski; T. Jacobsen; G V. Khaustov; T. Kinashi; J B. Kinson; A. Kirk; W. Klempt; A A. Kondashov; Y. Kulchitsky; A A. Lednev; V. Lenti; S. Maljukov; P. Martinengo; I. Minashvili; K. Myklebost; T. Nakagawa; K.L. Norman
A study of central meson production as a function of the difference in transverse momentum (
Physics Letters B | 1999
Dario Barberis; W. Beusch; Freddy Binon; A.M. Blick; F E. Close; K. M. Danielsen; A.V. Dolgopolov; S.V. Donskov; B.C. Earl; D. Evans; B.R. French; T. Hino; S. Inaba; A. V. Inyakin; T. Ishida; A. Jacholkowski; T. Jacobsen; G.V. Khaustov; T. Kinashi; J.B. Kinson; A. Kirk; W. Klempt; V. N. Kolosov; A. A. Kondashov; A. A. Lednev; V. Lenti; S. Maljukov; P. Martinengo; I. Minashvili; K. Myklebost
dP_T
Physics Letters B | 1999
D. Barberis; W. Beusch; F G. Binon; A.M. Blick; F E. Close; K M. Danielsen; A.V. Dolgopolov; S V. Donskov; B.C. Earl; D. Evans; B R. French; T. Hino; S. Inaba; A V. Inyakin; T. Ishida; A. Jacholkowski; T. Jacobsen; G V. Khaustov; T. Kinashi; J B. Kinson; A. Kirk; W. Klempt; V. N. Kolosov; A A. Kondashov; A A. Lednev; V. Lenti; S. Maljukov; P. Martinengo; I. Minashvili; K. Myklebost
) of the exchanged particles shows that undisputed
Physics Letters B | 1997
Dario Barberis; W. Beusch; Freddy Binon; A.M. Blick; F E. Close; K. M. Danielsen; A.V. Dolgopolov; S.V. Donskov; B.C. Earl; D. Evans; B.R. French; T. Hino; S. Inaba; A. V. Inyakin; T. Ishida; A. Jacholkowski; T. Jacobsen; G.V. Khaustov; T. Kinashi; J.B. Kinson; A. Kirk; W. Klempt; V. N. Kolosov; A. A. Kondashov; A. A. Lednev; V. Lenti; S. Maljukov; P. Martinengo; I. Minashvili; K. Myklebost
q \overline q
Physics Letters B | 1987
F. Balestra; M.P. Bussa; L. Busso; L. Fava; L. Ferrero; D. Panzieri; G. Piragino; F. Tosello; G. Bendiscioli; A. Rotondi; P. Salvini; A. Zenoni; Yu. A. Batusov; I. V. Falomkin; G. B. Pontecorvo; M.G. Sapozhnikow; V.I. Tretyak; C. Guaraldo; A. Maggiora; E. Lodi Rizzini; A. Haatuft; A. Halsteinslid; K. Myklebost; J.M. Olsen; F.O. Breivik; T. Jacobsen; S.O. Sørensen
mesons are suppressed at small
Physics Letters B | 1989
F. Balestra; Riccardo Barbieri; Yu. A. Batusov; G. Bendiscioli; S. Bossolasco; F.O. Breivik; M.P. Bussa; L. Busso; C. Guaraldo; I. V. Falomkin; L. Ferrero; V. Filiipini; A. Haatuft; A. Halsteinslid; Torben K. Jacobsen; E. Lodi Rizzini; A. Maggiora; M. Masala; K. Myklebost; J.M. Olsen; D. Panzieri; G. Piragino; G. B. Pontecorvo; A. Rotondi; A.M. Rozhdestvensky; P. Salvini; M.G. Sapozhnikov; S.O. Sørensen; F. Tosello; V.I. Tretyak
dP_T
Physics Letters B | 1998
Dario Barberis; W. Beusch; F G. Binon; A.M. Blick; F E. Close; K. M. Danielsen; A.V. Dolgopolov; S V. Donskov; B.C. Earl; D. Evans; B.R. French; C. Goodwin; T. Hino; S. Inaba; A V. Inyakin; T. Ishida; A. Jacholkowski; T. Jacobsen; G. Jones; G V. Khaustov; T. Kinashi; J.B. Kinson; A. Kirk; W. Klempt; V. N. Kolosov; A A. Kondashov; A. A. Lednev; V. Lenti; S. Maljukov; P. Martinengo
whereas the glueball candidates are enhanced.
Nuclear Physics | 1991
F. Balestra; Yu. A. Batusov; G. Bendiscioli; S. Bossolasco; F.O. Breivik; M.P. Bussa; L. Busso; K M Danielsen; C. Guaraldo; I. V. Falomkin; L. Fava; L. Ferrero; V. Filippini; A. Haatuft; A. Halsteinslid; T. Jacobsen; E. Lodi Rizzini; A. Maggiora; K. Myklebost; J.M. Olsen; D. Panzieri; G. Piragino; G. B. Pontecorvo; A. Rotondi; A.M. Rozhdestvensky; P. Salvini; M.G. Sapozhnikov; S.O. Sørensen; F. Tosello; V.I. Tretyak
A partial wave analysis of the centrally produced K+K- and K0K0 channels has been performed in pp collisions using an incident beam momentum of 450 GeV/c. An unambiguous physical solution has been found in each channel. The striking feature is the observation of peaks in the S-wave corresponding to the f0(1500) and fJ(1710) with J = 0. The D-wave shows evidence for the f2(1270)/a2(1320), the f2(1525) and the f2(2150) but there is no evidence for a statistically significant contribution in the D-wave in the 1.7 GeV mass region.A partial wave analysis of the centrally produced K+K- and K0K0 channels has been performed in pp collisions using an incident beam momentum of 450 GeV/c. An unambiguous physical solution has been found in each channel. The striking feature is the observation of peaks in the S-wave corresponding to the f0(1500) and fJ(1710) with J = 0. The D-wave shows evidence for the f2(1270)/a2(1320), the f2(1525) and the f2(2150) but there is no evidence for a statistically significant contribution in the D-wave in the 1.7 GeV mass region.
Nuclear Physics | 1989
F. Balestra; S. Bossolasco; M.P. Bussa; L. Busso; L. Ferrero; D. Panzieri; G. Piragino; F. Tosello; R. Barbieri; G. Bendiscioli; A. Rotondi; P. Salvini; A. Zenoni; Yu. A. Batusov; I. V. Falomkin; G. B. Pontecorvo; M.G. Sapozhnikov; V.I. Tretyak; C. Guaraldo; A. Maggiora; E. Lodi Rizzini; A. Haatuft; A. Halsteinslid; K. Myklebost; J.M. Olsen; F.O. Breivik; T. Jacobsen; S.O. Sørensen
A partial wave analysis of the centrally produced pi+pi- channel has been performed in pp collisions using an incident beam momentum of 450 GeV/c. An unambiguous physical solution has been found. Evidence is found for the f0(980), f0(1300), f0(1500) and fJ(1710) with J = 0 in the the S-wave. The rho(770) is observed dominantly in the P0-wave and the f2(1270) is observed dominantly in the D0-wave. In addition, there is evidence for a broad enhancement in the D-wave below 1 GeV.A partial wave analysis of the centrally produced pi+pi- channel has been performed in pp collisions using an incident beam momentum of 450 GeV/c. An unambiguous physical solution has been found. Evidence is found for the f0(980), f0(1300), f0(1500) and fJ(1710) with J = 0 in the the S-wave. The rho(770) is observed dominantly in the P0-wave and the f2(1270) is observed dominantly in the D0-wave. In addition, there is evidence for a broad enhancement in the D-wave below 1 GeV.A partial wave analysis of the centrally produced pi+pi- channel has been performed in pp collisions using an incident beam momentum of 450 GeV/c. An unambiguous physical solution has been found. Evidence is found for the f0(980), f0(1300), f0(1500) and fJ(1710) with J = 0 in the the S-wave. The rho(770) is observed dominantly in the P0-wave and the f2(1270) is observed dominantly in the D0-wave. In addition, there is evidence for a broad enhancement in the D-wave below 1 GeV.
Nuclear Physics | 1977
E. Fett; A. Haatuft; J.M. Olsen; W. Hart; D. Waldren; P. Alibran; B. Degrange; R. Arnold; J.P. Engel; S. de Unamuno
The reaction pp ->pf (pi+pi-pi+pi-) ps has been studied at 450 GeV/c in an experiment designed to search for gluonic states. A spin analysis has been performed and the dPT filter applied. In addition to the well known f1(1285) there is evidence for two JPC=2-+ states called the eta2(1620) and eta2(1875) and a broad scalar called the f0(2000). The production of these states as a function of the dPT kinematical filter shows the behaviour expected for qqbar states. In contrast, there is evidence for two states at 1.45 GeV and at 1.9 GeV which do not show the behaviour observed for qqbar states.Abstract The reaction pp → pf(π+ π− π+ π−)ps has been studied at 450 GeV/c in an experiment designed to search for gl states. A spin analysis has been performed and the dPT filter applied. In addition to the well know f1(1285) there is evidence for two JPC = 2−+ states called the η2(1620) and η2(1875) and a broad scalar called the f0(2000). The production of these states as a function of the dPT kinematical filter shows the behaviour expected for q q states. In contrast, there is evidence for two states at 1.45 GeV and at 1.9 GeV which do not show the behaviour observed for q q states.
