Nuclear Experiment·nucl-ex
3 papers—0 primary·3 cross-listed·reconstructed*
S. Gardner🇺🇸 · E. Jafari🇺🇸
We revisit the phenomenology of - oscillations in the presence of external magnetic fields, highlighting the role of spin. We show, contrary to long-held belief, that the - transition rate need not be suppressed, opening new opportunities for its empirical study.
Chi Yang🇨🇳
We present the direct photon production for GeV/ derived from continuum in the dielectron invariant mass region GeV/ from one billion GeV Au+Au events taken in year 2010 and 2011. A clear excess in the invariant yield compared to the number of binary collision scaled reference is observed in the \pt~range 1-4 GeV/. Model calculations with contributions from thermal radiation and initial hard parton scattering are consistent within uncertainties with the direct photon invariant yield.
Neutrinoless double beta decay is the only process known so far able to test the neutrino intrinsic nature: its experimental observation would imply that the lepton number is violated by two units and prove that neutrinos have a Majorana mass components, being their own anti-particle. While several experiments searching for such a rare decay have been performed in the past, a new generation of experiments using different isotopes and techniques have recently released their results or are taking data and will provide new limits, should no signal be observed, in the next few years to come. The present contribution reviews the latest public results on double beta decay searches and gives an overview on the expected sensitivities of the experiments in construction which will be able to set stronger limits in the near future.
* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.