منابع مشابه
Have Pentaquark States Been Seen?
The status of the search for pentaquark baryon states is reviewed in light of new results from the first two dedicated experiments from CLAS at Jefferson Lab and of new analyses from several labs on the Θ + (1540). Evidence for and against the heavier pentaquark states, the Ξ(1862) and the Θ 0 c (3100) observed at CERN and at HERA, respectively, are also discussed. I conclude that the evidence ...
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The splittings between the spin 1/2 and spin 3/2 iso-singlet baryons Λs(1405) and Λs(1520), and their charmed counterparts Λc(2593) and Λc(2625), have been a theoretical conundrum. Here we investigate the possibility that the QCD binding of color octets comprised of three quarks in a flavor singlet configuration is stronger than previously envisaged, allowing these states to be interpreted as h...
متن کاملCould HERA results have been predicted from semileptonic meson decays
The anomalous value of the tensor form factor in the kaon decay K → πeν and the destructive interference in pion decay π− → e−ν̄γ can be simultaneously described by admixture of a tensor interaction in the standard V -A one. It is shown that the same tensor interaction can describe recent HERA data at very large Q. 1 On leave from Centre for Space Research and Technologies, Faculty of Physics, U...
متن کاملHave Scientists Already Been Able to Surpass the Capabilities of Evolution?
Over two millennia ago Socrates was pondering whether our Universe and all things in it are governed by randomness or by a regulating intelligence. This philosophical question has been alive till the present day, since the proponents of neither side have been able to convince their opponents. Scientists seldom express or recognize clearly their philosophical presuppositions and many think that ...
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What a refreshing change to find a user friendly book on the subject of epilepsy which enables parents to understand this disorder and also provide a good basic guide to anyone, even health professionals. From beginning to end the "Parents Guide" allows the individual to learn as much as he or she requires. As the book states 'when first confronted with the diagnosis of epilepsy in a child, mos...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2004
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2004.03.054