Posted:

**Oct 26, 2012 2:02 am**RĂ‰SONAANCES: Higgs: New Deal

Higgs -> photon-photon -- too high for the Standard Model

Higgs -> tau-tau -- too low for the SM

Higgs -> bottom-bottom -- too high for the SM

Higgs -> Z-photon -- not observed; SM says it's not common enough to be observed, at least not yet

Higgs spin? SM and SM extensions say it's zero. Evidence of nonzero spin: the particle-beam directions making an imprint on the directions of the Higgs particles' decay products. Zero spin: isotropic or zero-imprint decay.

Spin 1 is theoretically awkward for decaying into 2 photons. Spin 2 is the first plausible nonzero value.

So I'll keep an eye out for anything interesting that comes out.

The new round of Higgs data will be presented on the 15th of November at a conference in Kyoto, and on blogs a few days earlier. The amount of data will increase by about 2/3 compared to what was available last summer. This means the errors should naively drop by 30%, or a bit more in the likely case of some improvements in the analyses. Here's a short guide to the hottest Higgs questions that may be answered.

Higgs -> photon-photon -- too high for the Standard Model

Higgs -> tau-tau -- too low for the SM

Higgs -> bottom-bottom -- too high for the SM

Higgs -> Z-photon -- not observed; SM says it's not common enough to be observed, at least not yet

Higgs spin? SM and SM extensions say it's zero. Evidence of nonzero spin: the particle-beam directions making an imprint on the directions of the Higgs particles' decay products. Zero spin: isotropic or zero-imprint decay.

Spin 1 is theoretically awkward for decaying into 2 photons. Spin 2 is the first plausible nonzero value.

So I'll keep an eye out for anything interesting that comes out.