J. Mäkelä
University of Helsinki
10 Papers
42 Citations
J. Mäkelä is an academic researcher from University of Helsinki. The author has contributed to research in topics: Isospin & Pion. The author has an hindex of 3, co-authored 10 publications.
Chat about Author
Papers
Exchange mechanisms and energy dependence of isospin amplitudes for the reaction pN → NNπ in the energy range 5–1480 GeV☆
E. Dahl-Jensen,I. Dahl-Jensen,J. D. Hansen,R. Møllerud,J. Mäkelä,M. Pimiä,E. Sundell,V. Bakken,J. Haldorsen,T. Jacobsen,G. Skjevling,G. Ekspong,H. Johansson,P. Lundborg,B. Sellden +14 more
TL;DR: In this article, the isoscalar amplitude M 1 2 0 is interpreted to be dominated by pomeron exchange and the isovector amplitude M 3 2 1 by π exchange, where Ix and I are the isospins of the exchanged particle and the N4π combination respectively.
19
Charged-particle multiplicity distributions and rescattering effects in pd interactions at 19 GeV/c
TL;DR: Inelastic topological pd cross-sections at 19 GeV/c have been determined from an exposure of the CERN 2 m bubble chamber, where the total cross-section for three or more prongs was measured to be (42.4±0.3) mb as discussed by the authors.
11
Some features of one, two and three pion production in pd collisions at 19 GeV/c
V. Bakken,H. Gennow,T. Jacobsen,P. Lundborg,R. Møllerud,J. Mäkelä,J.E. Olsson,M. Pimiä,B. Sellden,G. Skjevling,E. Sundell +10 more
TL;DR: In this article, cross sections for coherent and non-coherent production of one, two and three pions in pd reactions at 19 GeV/c were presented, and the mass distributions of the two pion noncoherent channels were studied.
10
On the nature of the cross channel isospin amplitudes for the reaction pN→NNπ in the energy range (6÷1480) GeVin the energy range (6÷1480) GeV
V. Bakken,G. Skjevling,H. Gennow,P. Lundborg,B. Sellden,J. D. Hansen,J. Mäkelä,M. Pimiä,E. Sundell +8 more
TL;DR: In this paper, the energy dependence of the three isospin amplitudes of the N4π system is analyzed as a function of the momentum transfer to and the mass of the system, and it is shown that the isoscalar amplitudeM12/0 is dominated by pomeron exchange.
3
Isospin analysis of single ϱ and f0 production in pN collisions in the energy range 7–24 GeV
V. Bakken,Y. Eisenberg,H. Gennow,D. Hochman,T. Jacobsen,U. Karshon,P. Lundborg,J. Mäkelä,R. Møllerud,J.E. Olsson,M. Pimiä,E.E. Ronat,B. Sellden,A. Shapira,E. Sundell,G. Yekutieli +15 more
TL;DR: In this paper, it was shown that the I1 = I2 = 0 amplitude is larger than the I 1 = I 2 = 1 amplitude and that it has an energy dependence such that it could be dominated by the pair of exchanges η + η.
2