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- From: sawyer@utahep.uta.edu (Lee Sawyer)
- Subject: Impressions of the ICHEP92 in Dallas
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- Organization: University of Texas at Arlington High Energy Physics Group
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- Date: Fri, 14 Aug 1992 18:23:00 GMT
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-
- Some impressions of the International Conference on High Energy Physics,
- held in Dallas the last few days, have already been posted. I concur that the
- tau branching ratio or "1prong" problem seems to be slowly dying with better
- results, particularly from CLEO II. ChangKee Jung from Stony Brook pointed
- out that, using just the tau lifetime from 1prong decays, there really isn't
- a discrepancy (although of course the error bars are bigger).
-
- For me, the most impressive results were from the HERA ep collider,
- now operating under the city of Hamburg. Both the H1 and ZEUS detectors
- have recorded deep inelastic scattering events, the machine seems to be
- running near design (although the proton beam was not up to the nominal 820 Gev
- at will run at). In the next few months some really nice results are going to be
- coming from this collider, although for the conference they had only a few dozen
- events based on about one month of running. Anyone at DESY want to keep the
- rest of us uptodate ?
-
- I can also speak a bit more coherently on future colliders. There are
- several designs on the board tau/charm, b, and phi factories, mostly e+e
- machines but with at least one proposal for an asymmetric proton collider
- as a b factory. However only one of these, the phi factory at Frascati, is
- actually under construction. But on the other hand, conferees were reminded that
- there already is a b factory : CESR, which has steadily increased in luminosity
- over the last five years; and a tau/charm/b factory : LEP, which is now getting
- around 45k Z0 events per week. Machine development for the Next Linear Collider
- is proceeding, with various accelerator structure prototypes being tested in the
- next year (the "partner beam" test at DESY(?) and the Final Focus Test Beam at
- SLAC).
-
- Peskin gave a good talk on the two roads to SU(3)xSU(2)XU(1) unification :
- Weak interactions with elementary scalars (Supersymmetry) or strong interactions
- with dynamical sysmmetry breaking (Technicolor). Weinberg in his conference
- summary placed his bets on Supersymmetry.
-
- Rubbia spoke on LHC, and European HEP in general; Schwitters talked about
- SSC. Most infuriating moment : Rubbia's insistenence on referring to Fermilab
- as "Flab". Great, Carlo, just keep thinking that...and saying that LHC will turn
- on in 1999 when you don't have working magnets and none of the experiments have
- even drawn up technical designs. I think smoke is still coming out of my ears...
-
- All in all a great conference. The upshot of it all is (as always) that the
- Standard Model is in great shape. But we are at a point, with HERA going down
- to the nonpertubative region and the Tevatron producing good data for two
- experiments, where things could well start to get interesting...
-
- ================
- Dr. Lee Sawyer
-
- Dept of Physics
- Univ. of Texas
- at Arlington
-