Recent content by QuantumSkippy

Hi Everyone! I have been told that even for an entirely LOCAL scalar field φ with Lagrangian density say of the form, L = ∂/∂xμ∂/∂xμφ ± φ4 + Aφ3 + Bφ2. +. Cφ + D, that it is really bad, bad, bad because the coefficient (C) of φ is not zero! That is, ∂/∂φ(L) ≠ 0 when φ...

Thanks very much! Would be most grateful if you could tell me how to locate those references. Best wishes.

Hello Everyone, Hope you are all enjoying learning more and more about this wonderful world of Physics! Is it that I am missing something somewhere, but when I searched the ATLAS site to find out what experiments were planned to measure the self-interaction of the Higgs, I could see...

Thanks very much for your help. I have to give a talk and I wanted to make sure I got it right. Really need to do more calculations more often, so that I will be comfortable with the various systems of units. Thanks again! Cheers.

Thanks for replying. The unit system being used would be the one most commonly employed by particle physicists. I would be happy to know the values in the most commonly used system. Cheers

Hi Everyone, I have to calculate the coefficients of the massive Higgs Lagrangian in natural units, ħ = c = 1. Do I assume firstly that, in these units the masses of the Higgs, W and Z are the usual, 125.09±0.21, 80.4, 91.2 respectively, and secondly that e has to have the value 2√(απ)...

Thanks! You've said it all and I will indeed have a look at the public pages of ATLAS and CMS which I did encounter recently. Again, thanks.

Hello everyone. What measurements have been done of the Higgs self-interaction? If nothing has been done yet, what are the relevant groups and research articles describing the progress of work in this direction? If this has been done, I would love to know the references. Thanks!

Hello everyone. A Philosophy of Science friend showed a site where you can upload your paper and then you will be fairly quickly reviewed by your peers and this will be published alongside your paper. It seems to me this is a very good way to proceed; you may get assessment from the very top...

Hi Everyone. In the Resonaances blog, I recall that it was mentioned there that the particle physics group at CERN had made an updated statement of the mass of the Higgs as being 125.8. When I look at the Resonaances blog I cannot find reference to this statement and they are only now...

Just had a look at the Resonaances Blog which Bill_K very kindly supplied, and this answers most of my questions. Thanks heaps! It certainly is looking like the standard model Higgs. Can competing theories which dish up a Higgs boson with certain variations be ruled out at this stage...

Thanks very much for the replies. Does this mean that the only quantitative measurements of the couplings of the Higgs to the W and Z fields are those on the Higgs diphoton rate? If that is the case, it sounds like they are jumping the gun a bit. Is that the case? Secondly, is there somewhere...

Hi everyone and happy New Year. The Standard Model shows very specific and measurable couplings of the Higgs boson with the W and Z fields. What QUANTITATIVE measurements have been done to verify that these couplings are as predicted? Thanks and looking forward to your replies. A lot of...

Thanks for that. Finally, what would be the form of g and g' expressed in the usual SI units (Lorentz-Heaviside), and what would be their dimensions in MLT format? Really appreciate your help.

Thanks very much for this. I will do the calculations. But this also raises an important natural philosophical question: As we are dealing only with units and the very well known values of c and h, the conversion should be possible without reference to the fine structure constant at all...