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- From: phfrom@nyx.uni-konstanz.de (Hartmut Frommert)
- Subject: Re: Superbashing (was Re: SARFATTI LECTURES ON SUPER PHYSICS #1)
- Message-ID: <phfrom.240@nyx.uni-konstanz.de>
- Sender: usenet@eratu.rz.uni-konstanz.de
- Organization: Dept. of Physics, University of Constance
- References: <92218.094826DOCTORJ@SLACVM.SLAC.STANFORD.EDU> <phfrom.238@nyx.uni-konstanz.de> <25428@dog.ee.lbl.gov>
- Date: Thu, 13 Aug 1992 12:19:12 GMT
- Lines: 47
-
- sichase@csa2.lbl.gov (SCOTT I CHASE) writes:
-
- >phfrom@nyx.uni-konstanz.de (Hartmut Frommert) writes...
- >>any supersymmetry. So there's no experimental, phenomenological, or
- >>theoretical evidence for SS. (See also John C. Baez's posting)
-
- >That's not the way I understand it. If you take the SM by itself, there
- >are intrinsic problems which are guaranteed to arise at sufficiently high
- >energy. In loose terms, the Higgs particle behaves badly at high energy,
- >causing "violation of unitarity," i.e., probabilities for certain processes
- >are predicted to be greater than unity. If I remember correctly, these
- >problems arise with quadratic Higgs self-couplings and longitudinal W-W
- >scattering.
-
- Don't fix me, and don't beat me, but if I remember right, unitarity as well
- as renormalizability have been proven for the SM in the 70's by Weinberg,
- t'Hooft, and others. Problems arise from the nonlinearity of the Higgs
- theory (i.e. field equation) -- no superposition, etc. I'm rather sure that
- self-consistency of the SM is granted.
-
- I'm aware that there are problems in really performing the renormalization
- and keeping unitarity.
-
- >Although we have not yet probed the energy scale at which this arises,
- >so that in the strict sense you are correct that there is no experimental
- >evidence for SS, we know that the problems are coming and that SS is
- >a way out, which offers additional theoretical appeal on other fronts
- >as well.
-
- >I think that it would be fair to consider these problems with the SM
- >as some "theoretical" evidence for SS or some other theory which is
- >mathematically similar.
-
- Does SS overcome the problems mentioned ? If not, and if the problems of SM
- are of deeper nature (not only "missing a (math'l) trick") then you canNOT
- derive theoretical evidence for a particular other theory, e.g. SS.
-
- But if you want, you may also view the SSC as a tool for finding out if the
- energy range scanned by it gives some experimental evidence to one of the
- concurrent theories. If not, it will at least deliver restrictions to some
- parameters in the theory.
- --
- Hartmut Frommert, Physics, Univ of Constance, | + Whale killing is murder. +
- P.O.Box 55 60, D-W-7750 Konstanz, Germany | + Eat whale killers, not whales.
- E-Mail: <phfrom@dknkurz1.bitnet> or <phfrom@nyx.uni-konstanz.de>
- + "Windows NoT" expands in German to "Windows Noch Teurer"
- + ^even ^more expensive
-