Proposal to look for the anomalous isotopic symmetry breaking in central diffractive production of the f1(1285)f_1(1285) and a00(980)a^0_0(980) resonances at the LHC

At very high energies, and in the central region ($x_F\simeq0$), the double-Pomeron exchange mechanism gives the dominant contribution to the production of hadrons with the positive $C$ parity and isospin $I=0$. Therefore, the observation of resonances in the states with $I=1$ will be indicative of their production or decay with the isotopic symmetry breaking. Here, we bear in mind the cases of the anomalous breaking of the isotopic symmetry, i.e., when the cross section of the process breaking the isospin is not of the order of $10^{-4}$ of the cross section of the allowed process but of the order of $1\%$. The paper draws attention to the reactions $pp\to p(f_1(1285)/f_1(1420))p\to p(\pi^+\pi^-\pi^0)p$ and $pp\to p(K\bar K)p\to p(a^0_0(980))p\to p(\eta\pi^0)p$ in which a similar situation can be realized, owing to the $K\bar K$ loop mechanisms of the breaking of isotopic symmetry. We note that there is no visible background in the $\pi^+\pi^-\pi^0$ and $\eta \pi^0$ channels. Observation of the process $pp\to p(f_1(1285))p\to p(\pi^+\pi^-\pi^0)p$ would be a confirmation of the first results from the VES and BESIII detectors, indicating the very large isospin breaking in the decay $f_1(1285))\to\pi^+\pi^-\pi^0$.Comment: 5 pages, 4 figures; v2: title changed, comments and references adde

Lepton Flavor Violation at LHC

Lepton flavor violation (LFV) within the realm of the Standard Model is forbidden. However recent neutrino experiments strongly suggest neutrino oscillations, giving way to LFV. Beyond SM theories, such as supersymmetry and supergravity also allow LFV. This note reviews the possibility of observing LFV signal in the two general purpose LHC experiments: ATLAS and CMS. It is shown that using the initial LHC luminosity, in about a year, either a discovery can be made or the current LFV limits can be enhanced by an order of magnitude.Comment: for 40th moriond EW conf. proceedings, 7 pages, 3 figure

Resisting Reductive Realism

Ethicists struggle to take reductive views seriously. They also have trouble conceiving of some supervenience failures. Understanding why provides further evidence for a kind of hybrid view of normative concept use