Author: Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 38
Book Description
Accessions of Unlimited Distribution Reports
Author: Government Reports Index
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1120
Book Description
Government Reports Announcements
Author: Government Reports Announcements & Index
Author: Exobiology: Matter, Energy, and Information in the Origin and Evolution of Life in the Universe
Author: Julian Chela-FloresPublisher: Springer
ISBN: 9789401061247
Category : Science
Languages : en
Pages : 386
Book Description
Leading researchers in the area of the origin, evolution and distribution of life in the universe contributed to Exobiology: Matter, Energy, and Information in the Origin and Evolution of Life in the Universe. This volume provides a review of this interdisciplinary field. In 50 chapters many aspects that contribute to exobiology are reviewed by 90 authors. These include: historical perspective of biological evolution; cultural aspects of exobiology, cosmic, chemical and biological evolution, molecular biology, geochronology, biogeochemistry, biogeology, and planetology. Some of the current missions are discussed. Other subjects in the frontier of exobiology are reviewed, such as the search for planets outside the solar system, and the possible manifestation of intelligence in those new potential environments. The SETI research effort is well represented in this general overview of exobiology. This book is the proceedings of the Fifth Trieste Conference on Chemical Evolution that took place in September 1997. The volume is dedicated to the memory of Nobel Laureate Abdus Salam who suggested the initiation of the Trieste conferences on chemical evolution and the origin of life. Audience: Graduate students and researchers in the many areas of basic, earth, and life sciences that contribute to the study of chemical evolution and the origin, evolution and distribution of life in the universe.
Confirmation of a New [delta Pi] Resonance in the Reaction Kn [arrow] [delta Pi]+[pi]-[pi]-
![Confirmation of a New [delta Pi] Resonance in the Reaction Kn [arrow] [delta Pi]+[pi]-[pi]- PDF](https://books.google.com/books/content/images/frontcover/d8TpcRp1_7MC?fife=w80-h100)
Author: A. C. AmmannPublisher:
ISBN:
Category : Mass spectrometry
Languages : en
Pages : 30
Book Description
A Study of the Reaction [pi] ̄+ P-->[pi]+̄[pi]+̊p at 310 and 377 Mev
![A Study of the Reaction [pi] ̄+ P-->[pi]+̄[pi]+̊p at 310 and 377 Mev PDF](https://books.google.com/books/content/images/frontcover/NjCoEvtfL50C?fife=w80-h100)
Author: Barry Clark BarishPublisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 74
Book Description
Production of K[pi][pi] Resonances at High Energy
![Production of K[pi][pi] Resonances at High Energy PDF](https://books.google.com/books/content/images/frontcover/Oc4am7HXk6YC?fife=w80-h100)
Author: J. BerlinghieriPublisher:
ISBN:
Category : Mesons
Languages : en
Pages : 22
Book Description
Evidence for a [pi] [eta] Resonance at 970 MeV Produced in K−p --> [lamda] [pi]+ [pi]− MM at 3.9, 4.6, and 5.0 GeV/c
![Evidence for a [pi] [eta] Resonance at 970 MeV Produced in K−p --> [lamda] [pi]+ [pi]− MM at 3.9, 4.6, and 5.0 GeV/c PDF](https://books.google.com/books/content/images/frontcover/S6LcurAHnhIC?fife=w80-h100)
Author: Search for the Pentaquark Θ+ via the π−p → K−X Reaction at J-PARC
Author: Manabu MoritsuPublisher: Springer
ISBN: 9811000123
Category : Science
Languages : en
Pages : 132
Book Description
This theses reports on an experimental search for an exotic hadron, Θ+(1540) pentaquark, which is a genuine exotic hadron with a five-quark system of uuddsbar. The results of this book support that the existence of Θ+ was strongly constrained. The Θ+ pentaquark was searched for via the π- 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 Θ+. 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 π- p → K- X reaction, and the upper limit of the production cross section was found to be less than 0.28 μb/sr at the 90% confidence level in a mass region of 1500–1560 MeV/c2. 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 Θ+ was evaluated. The upper limits on the decay width were estimated to be 0.36 and 1.9 MeV for the Θ+ spin-parity of 1/2+ and 1/2-, respectively. These are quite small for a width of ordinary hadron resonances, and the existence of Θ+ was strongly constrained and is doubtful.