We present updated results of an SU(3)-flavor analysis of D→ PP decay data including linear breaking and no further assumptions. The global fit is consistent with nominal (∼ 30%) SU(3)F breaking and returns enhanced penguin (triplet) contributions. Their size is driven, in addition to ∆ACP, by the CP asymmetries of D0→ KSKS, Ds→ KSπ and Ds→ K+π0 decays. It is therefore especially important to i...

The Bienenstock-Cooper-Munroe (BCM) rule is one of the best-established learning formalisms for neural tissue. However, as it is based on pulse rates, it can not account for recent spike-based experimental protocols that have led to spike timing dependent plasticity (STDP) rules. At the same time, STDP is being challenged by experiments exhibiting more complex timing rules (e.g. triplets) as we...

We present a stability analysis of the 2D t − t ′ Hubbard model on a square lattice for t ′ = −t/6. We find possible phases of the model (d-wave Pomeranchuk and superconducting states, band splitting, singlet and triplet flux phases), and study the interplay of them.

We study various aspects of the Kähler metric for matter fields in N = 1, 2 orientifold compactifications of type IIB string theory. The result has an infrared-divergent part which reproduces the field-theoretical anomalous dimensions, and a moduli-dependent part which comes from N = 2 sectors of the orientifold. For the N = 2 orientifolds, we also compute the disk amplitude for two matter fiel...

In the analysis of the strength or efficiency of players in a game it is usually assumed that there is no interaction between the strength or efficiency of players against the alternative that players display synergy, i.e a group of players work together better than would be predicted by just considering their individual strengths or efficiencies. This paper deals with two tests for synergy whe...

The weak decays Ξ b → Λ b π and Ξ c → Λ c π, in which the heavy quark is not destroyed, are discussed. The branching fractions for these decays, corresponding to an absolute rate of order 0.01 ps −1 , should be at a one percent level for the b hyperons and at a (few) per mill level for Ξ c , possibly making feasible their experimental study in future. It is shown, through an application of the ...

We report the results of a search for second and third generation leptoquarks using 88 pb−1 of data recorded by the Collider Detector at Fermilab. Color triplet technipions, which play the role of scalar leptoquarks, are investigated due to their potential production in decays of strongly coupled color octet technirhos. Events with a signature of two heavy flavor jets and missing energy may ind...

We show that axions and majorons can be a natural outcome in a 3-3-1 type model with right-handed neutrinos. We implement the breaking of their associated symmetries, Peccei-Quinn and Lepton number respectively, and study the phenomenological consequences. The main result of this work is that our majoron is invisible even though it belongs to a triplet representation.

A series of Zariski pairs and four Zariski triplets were found by using lattice theory of K3 surfaces. There is a Zariski triplet of which one member is a deformation of another.

Among the values of a binary quadratic form, there are many twins of fixed distance. This is shown in quantitative form. For quadratic forms of discriminant −4 or 8 a corresponding result is obtained for triplets.