This theses reports on an experimental search for an exotic hadron, + (1540) pentaquark, which is a genuine exotic hadron with a five-quark system of uudds bar . The results of this book support that the existence of + was strongly constrained. The + pentaquark was searched for via the - p K - X reaction using a beam momentum of 2.01 GeV/c at the J-PARC hadron experimental facility, taking advantage of high-statistics and high-resolution compared with previous experiments, some of which claimed the evidence ...
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This theses reports on an experimental search for an exotic hadron, + (1540) pentaquark, which is a genuine exotic hadron with a five-quark system of uudds bar . The results of this book support that the existence of + was strongly constrained. The + pentaquark was searched for via the - p K - X reaction using a beam momentum of 2.01 GeV/c at the J-PARC hadron experimental facility, taking advantage of high-statistics and high-resolution compared with previous experiments, some of which claimed the evidence of + . In order to realize a good missing-mass resolution of 2 MeV, the beam spectrometer and superconducting kaon spectrometer were constructed. No clear peak was observed in the missing mass spectrum of the - p K - X reaction, and the upper limit of the production cross section was found to be less than 0.28 b/sr at the 90% confidence level in a mass region of 1500-1560 MeV/c 2 . This upper limit is an order of magnitude smaller than that of the previous KEK experiment. Compared with a theoretical calculation using the effective Lagrangian approach, the decay width of + was evaluated. The upper limits on the decay width were estimated to be 0.36 and 1.9 MeV for the + spin-parity of 1/2 + and 1/2 - , respectively. These are quite small for a width of ordinary hadron resonances, and the existence of + was strongly constrained and is doubtful.
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Add this copy of Search for the Pentaquark + Via the -P K-X Reaction to cart. $112.32, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2018 by Springer.
Add this copy of Search for the Pentaquark + Via the -P K-X Reaction to cart. $117.19, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2018 by Springer.
Add this copy of Search for the Pentaquark + Via the -P K-X Reaction to cart. $112.32, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2016 by Springer.
