f*******d
发帖数: 339 | 1 newest link
http://lephiggs.web.cern.ch/LEPHIGGS/talks/pik_lepc_nov3_200
0.pdf
I have a question for those who are familiar with these
experiments:
The claimed Higgs boson mass is 115^{+1.3}_{-0.9} GeV ,
but at the same time the transparency also says that current
bound is
M_H > 113.5 GeV at 95% CL, what does this mean?
Why does it present a mass value and a
lower bound at the same time? | p******e
发帖数: 58 | 2 there's no problem with this kind of statement.
the M(h)=115GeV is not confirmed yet. there are some excess
over standard model expectation, which looks like a Higgs at
115GeV. but the excess is not statistically significant
enough (around 3 sigma now) to claim a discovery. the talk
you mentioned is used to push CERN to run LEP for another year
to see if there's indeed a higges there.
the limit is another story, which means we didn't find higgs
at M(h)<113GeV, at 95% confidence level. Usuall
【在 f*******d 的大作中提到】
: newest link
: http://lephiggs.web.cern.ch/LEPHIGGS/talks/pik_lepc_nov3_200
: 0.pdf
: I have a question for those who are familiar with these
: experiments:
: The claimed Higgs boson mass is 115^{+1.3}_{-0.9} GeV ,
: but at the same time the transparency also says that current
: bound is
: M_H > 113.5 GeV at 95% CL, what does this mean?
: Why does it present a mass value and a
| l**n
发帖数: 67 | 3
why must the 115higgs not be a SM higgs?
In principle, LEP still has chance of running in 2001 despite the press release
http://press.web.cern.ch/Press/Releases00/PR14.00ELEPstop.html
You can find more infomation from the the home page of the most determinent
people (LEP physics cooridinator) proprosing lep running in 2001.
http://alephwww.cern.ch/~janot/LEPCO/Welcome.html
3\sigma (a probability 0.99865) is typically not a strong evidence
(there are long lists of stat. fluctuations which l |
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