**W Boson Mass At The LHC (ATLAS) and Tevatron (CDF)**

The result of the CDF analysis is MW = 80 387±12(stat.)±15(syst.) MeV; the result of the ATLAS analysis is MW = 80 370 ± 7(stat.) ± 11(exp.syst.) ± 14(mod.syst.) MeV. The total uncertainty is 19 MeV in both analyses.From here.

*My comments: The lighter ATLAS result is closer to a result expected from a global electroweak fit. The Tevatron based results will never get better because that experiment has concluded. The LHC based results will almost surely get better before the experiment concludes, if for no other reason, because the statistical error will get a bit smaller over time and because independent results from ATLAS and CMS can be combined reducing a little systemic error as well.*

**Heavy Quark Masses And The Strong Coupling Constant From HERA**

**New results on the measurements of the hadronic final state in neutral-current deep-inelastic scattering at HERA are presented. A combination of reduced charm and beauty cross sections is presented and the masses of the heavy quarks are determined to**

*My comments: The charm quark mass is a bit high, (also here and here) and bottom quark mass is a bit on the low side, as is the strong force coupling constant. But, all of the measurements have significant margins of error, so the differences aren't very meaningful.*

**CKM Matrix Elements Involving Bottom Quarks At Belle II**

**Semileptonic**

*My comments: These two element are hard to measure because Vtb = 0.99914 +/- 0.00005 is dominant, and Vub =*0.00355 ± 0.00015

*, in particular, is very small. The square of Vub which represents the probability is 1.26 per 100,000. The paper discusses prospects for improvements in accuracy in future measurements of this CKM matrix elements and does not actually contain any measurements.*

*UPDATE May 18, 2017: A survey of recent measurements of four CKM matrix elements is found here. END UPDATE.*

**Theoretically Expected Higgs Boson Diphoton Decays**

Physicists have replicated, in a more general matter than a previous result, the conclusion that many of the terms that go into calculating the likelihood that a Higgs boson will experience a diphoton decay cancel out. In particular, they show "the cancellation of all terms among the Feynman diagrams which are to be integrated to give divergences higher than logarithmic." This conclusion which requires 30 dense pages of calculations implies that calculating the likelihood of this decay is much easier than would be naively expected.

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