N ov 2 00 3 Determining the Θ + quantum numbers through the K + p → π + K + n reaction

- th / 0 30 71 05 v 1 2 8 Ju l 2 00 3 Determining the Θ + quantum numbers through the K + p → π + K + n reaction

0 v 1 3 0 N ov 2 00 5 New result of the measurement of the direct photon emission in K + → π + π 0 γ decay

N ov 2 00 6 Measurements of K e 4 and K ± → π 0 π 0 π ± decays

N ov 2 00 8 Importance Tempering

Simulated tempering (ST) is an established Markov chain Monte Carlo (MCMC) method for sampling from a multimodal density π(θ). Typically, ST involves introducing an auxiliary variable k taking values in a finite subset of [0, 1] and indexing a set of tempered distributions, say π k (θ) ∝ π(θ) k. In this case, small values of k encourage better mixing, but samples from π are only obtained when t...

ar X iv : h ep - p h / 03 11 27 4 v 1 2 1 N ov 2 00 3 Isospin Breaking in K l 4 Decays of the Charged Kaon

The charged K ℓ4 decay, K + → π + π − ℓ + ν ℓ is studied in the framework of chiral perturbation theory based on the effective Lagrangian including mesons, photons, and leptons. We give analytic expressions for the two vectorial form factors, f and g, calculated at one-loop level in the presence of Isospin breaking effects. These expressions may then be used to disentangle the Isospin breaking ...