منابع مشابه
Eta and Eta’ Physics
This talk describes the reasons why η and η decays are an interesting topic of study for both theory and experiment. The main part discusses the results of the recent calculation of η → 3π at two-loop order in ChPT. Some puzzling aspects of the results compared to earlier dispersive calculations are highlighted. I also like to remind the reader of the use of η and η decays for studying the anom...
متن کاملchi ( c 0 ) and chi ( c 2 ) decays into eta eta , eta eta ‘ , and eta ’ eta ’ final states
G. S. Adams, M. Anderson, J. P. Cummings, I. Danko, J. Napolitano, Q. He, J. Insler, H. Muramatsu, C. S. Park, E. H. Thorndike, F. Yang, T. E. Coan, Y. S. Gao, M. Artuso, S. Blusk, J. Butt, J. Li, N. Menaa, R. Mountain, S. Nisar, K. Randrianarivony, R. Sia, T. Skwarnicki, S. Stone, J. C. Wang, K. Zhang, S. E. Csorna, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Lincoln, D. M. Asner, K. W. Edwards,...
متن کاملThe λ-Orionis Ring in CO
The results of a new CO(J=1→0) survey of the ring of molecular clouds around the H ii region Sh-2-264 and the λ-Orionis OB-association are presented. The distribution of molecular gas closely approximates that of the dust seen in IRAS emission. The total molecular mass is 1.4×104 M . The mass spectrum of the emission clumps is a power-law with index -1.8, similar to that observed in other star-...
متن کاملLambda Orionis: a 0.02–50 M⊙ Imf
We derive the initial mass function for the Col 69 cluster ( 5 Myr), covering several orders of magnitude in mass (50 – 0.02 M⊙). 1. The Lambda Orionis Star Forming Region One of the most amazing areas in the northern, winter sky is Orion and its myriads of star forming regions (SFR). One of the most prominent, albeit not very well studied, is the SFR dominated by the O8 III star λ Ori, the Lam...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1995
ISSN: 0252-9211
DOI: 10.1017/s0252921100037258