Popularity of Nomenclature: PF Reader Poll

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    Nomenclature Poll

which of these expressions are known to you?


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arivero
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I have to confess that I hadn't heard about the Higgs doublet and also about the THDM (Two Higgs Doublet model). I hope to have passed the test though :biggrin:

Do you happen to know if the Minimal supersymmetric standard model is actually considered like a viable theory? There's not much discussion about it at PF.
 
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Mssm

As far as one can read from the particle data group, it keeps being one of the main theories under consideration. If you go across the evaluation of searches in high energy physics, you will notice that the particles coming from the MSSM are currenntly given more emphasis than, for example, the ones coming from grand unyfied models. For the MSSM a huge range of plots about exclusion areas is done.

In the last year I am afraid that one motivation to dismiss research in the 68 GeV events measured by LEP was -IMHO- that they were not compatible with the minimal supersymmetric model.
 
Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...

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