Xeon
Introduced in May 2013, Xeon E3-12xx v3 is the first Xeon series based on the Haswell microarchitecture. It uses the new LGA 1150 socket, which was introduced with the desktop Core i5/i7 Haswell processors, incompatible with the LGA 1155 that was used in Xeon E3 and E3 v2. As before, the main difference between the desktop and server versions is added support for ECC memory in the Xeon-branded parts. The main benefit of the new microarchitecture is better power efficiency.
Enriched Xenon Observatory
In August 2011, EXO-200 was the first experiment to observe double beta decay of Xe, with a half life of 2.11×10 years. This is the slowest directly observed process. An improved half life of 2.165 ±0.016(stat) ±0.059(sys) × 10 years was published in 2014. EXO set a limit on neutrinoless beta decay of 1.6×10 years in 2012. A revised analysis of run 2 data with 100 kg·yr exposure, reported in the June issue of "Nature" reduced the limits on half-life to 1.1×10 yr, and mass to 450 meV. This was used to confirm the power of the design and validate the proposed expansion.