نتایج جستجو برای: interferon υ ifn υ
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Recently proposed low scale quantum gravity scenario is expected to have a significant impact on the Mirror World hypothesis. Some aspects of this influence is investigated here, assuming that the fundamental gravity scale is near a TeV. It is shown that future colliders will be capable to produce the mirror matter, but an experimental signature, which will distinguish such events from the back...
During the last several years an opportunity for B s meson studies at the e e colliders running at the Υ(5S) resonance has been extensively explored. The first evidence for B s production at the Υ(5S) was found by the CLEO collaboration [1, 2] using a dataset of 0.42 fb collected in 2003. This study indicated that practicalB s measurements at the Υ(5S) are possible with a dataset of at least 20...
Heavy quarkonium cc̄ (cc̄ charmonium, bb̄ bottomonium) provides the best means of testing QCD, both the validity of perturbative QCD and potential models, and lattice QCD calculations. Bottomonium is better than charmonium, both because it has smaller relativistic problems (< v/c >≈ 0.1 versus ≈ 0.2) and smaller coupling constant (α ≈ 0.2 versus ≈ 0.35), but much less high precision spectroscopic ...
How few three-term arithmetic progressions can a subset S ⊆ ZN := Z/NZ have if |S| ≥ υN? (that is, S has density at least υ). Varnavides [4] showed that this number of arithmetic-progressions is at least c(υ)N for sufficiently large integers N ; and, it is well-known that determining good lower bounds for c(υ) > 0 is at the same level of depth as Erdös’s famous conjecture about whether a subset...
The asynchronous systems are the models of the asynchronous circuits from the digital electrical engineering. An asynchronous system f is a multi-valued function that assigns to each admissible input u : R → {0, 1}m a set f(u) of possible states x ∈ f(u), x : R → {0, 1}n. A special case of asynchronous system consists in the existence of a Boolean function Υ : {0, 1}n × {0, 1}m → {0, 1}n such t...
We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-)→h(b)(nP)π(+)π(-) using a 121.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine M[h(b)(1P)]=(9898.2(-1.0-1.1)(+1.1+1.0)) MeV/c(2) and M[h(b)(2P)]=(10,...
This research was motivated by universal algebraic geometry. One of the central questions of universal algebraic geometry is: when two algebras have the same algebraic geometry? For answer of this question (see [8],[10]) we must consider the variety Θ, to which our algebras belongs, the category Θ of all finitely generated free algebras of Θ and research how the group AutΘ of all the automorphi...
The CLEO Collaboration has observed the first hadronic transition among bottomonium (bb̄) states other than the dipion transitions among vector states, Υ(nS)→ππΥ(mS). In our study of Υ(3S) decays, we find a significant signal for Υ(3S)→γωΥ(1S) that is consistent with radiative decays Υ(3S)→γχb1,2(2P ), followed by χb1,2(2P )→ωΥ(1S). The branching ratios we obtain are B(χb1(2P )→ωΥ(1S)) = 1.63 +0...
Sierpiński graphs are known to be graphs with self-similar structures, and their various properties have been investigated until now. Besides, they are known to be isomorphic to WK-recursive networks which have been proposed as interconnection networks because of their nice extendability. As a generalization (resp., variant) of Sierpiński graphs, generalized Sierpiński graphs (resp., extended S...
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