The Oslo Cyclotron Laboratory Görgen, A.; Guttormsen, M.; Larsen, A. C. ...
European physical journal plus,
02/2021, Letnik:
136, Številka:
2
Journal Article
Recenzirano
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Research at the Oslo Cyclotron Laboratory at the University of Oslo is focused on spectroscopy experiments for nuclear structure and nuclear astrophysics using the Oslo Scintillator Array OSCAR. ...Light-ion beams from the
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cyclotron are furthermore used for studies in radiation biology and medical physics, for research and development related to medical isotope production, and for irradiation of materials and electronics components. Here we present an overview of the laboratory and its research infrastructure, give a brief discussion of the respective research programs and methods, and present recent highlights.
(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image) The production of the strange and double-strange baryon resonances (..., ...) has been measured at mid-rapidity (... ...) ...in proton-proton collisions at ... ... 7 TeV with the ALICE detector at the LHC. Transverse momentum spectra for inelastic collisions are compared to QCD-inspired models, which in general underpredict the data. A search for the ... pentaquark, decaying in the ... channel, has been carried out but no evidence is seen.
(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image) Abstract Inclusive J/psi production has been studied with the ALICE detector in p-Pb collisions at the nucleon-nucleon ...center of mass energy ... = 5.02 TeV at the CERN LHC. The measurement is performed in the center of mass rapidity domains 2.03 < y ^sub cms^ < 3.53 and -4.46 < y ^sub cms^ < -2.96, down to zero transverse momentum, studying the mu ^sup +^ mu ^sup -^ decay mode. In this paper, the J/psi production cross section and the nuclear modification factor R ^sub pPb^ for the rapidities under study are presented. While at forward rapidity, corresponding to the proton direction, a suppression of the J/psi yield with respect to binary-scaled pp collisions is observed, in the backward region no suppression is present. The ratio of the forward and backward yields is also measured differentially in rapidity and transverse momentum. Theoretical predictions based on nuclear shadowing, as well as on models including, in addition, a contribution from partonic energy loss, are in fair agreement with the experimental results. Figure not available: see fulltext.
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