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Author Topic:   Higg's Boson?
kbertsche
Member (Idle past 2159 days)
Posts: 1427
From: San Jose, CA, USA
Joined: 05-10-2007


Message 42 of 49 (643990)
12-13-2011 7:29 PM
Reply to: Message 37 by cavediver
12-13-2011 5:46 PM


Re: CERN Report
I (and most of my co-workers) found the report and plots a bit underwhelming. The most definitive piece of information is that they ruled it out from 127-600 GeV. They see an excess between 115-127 GeV, on multiple channels, but combined it's only about 3 sigma. Some of the channels show more than a 2 sigma deficit at various energies, which must be due to statistics or analysis error. So I don't see any reason to get excited yet. (But as an accelerator physicist, I certainly hope that this will help to justify the next accelerator!)

"Science without religion is lame, religion without science is blind." — Albert Einstein
I am very astonished that the scientific picture of the real world around me is very deficient. It gives us a lot of factual information, puts all of our experience in a magnificently consistent order, but it is ghastly silent about all and sundry that is really near to our heart, that really matters to us. It cannot tell us a word about red and blue, bitter and sweet, physical pain and physical delight; it knows nothing of beautiful and ugly, good or bad, God and eternity. Science sometimes pretends to answer questions in these domains, but the answers are very often so silly that we are not inclined to take them seriously. — Erwin Schroedinger

This message is a reply to:
 Message 37 by cavediver, posted 12-13-2011 5:46 PM cavediver has replied

Replies to this message:
 Message 43 by cavediver, posted 12-13-2011 7:36 PM kbertsche has replied

  
kbertsche
Member (Idle past 2159 days)
Posts: 1427
From: San Jose, CA, USA
Joined: 05-10-2007


Message 47 of 49 (644066)
12-14-2011 8:35 PM
Reply to: Message 43 by cavediver
12-13-2011 7:36 PM


Re: CERN Report
quote:
Ah - oh well
I'm so busy at the moment that I didn't even read the report (so busy that I haven't yet replied to you in the other thread - will do, promise) but just thought I heard around 3 sigma in each channel (tho' I did wonder why in that case, they didn't give an effective combined...) The 2 sigma deficits are all the selectrinos and sphotinos.
I listened to two seminars today, one on Atlas results and the other on CMS. I had misinterpreted the plots earlier; the two experiments have not been combined together. Each one shows between a 2 and 3 sigma excess when they combine all channels. For each experiment, the same two channels dominate the data: H -> PP, and H -> ZZ -> 4L (where H is Higgs, P is photon, L is lepton). The data still seems underwhelming (about 1% chance that it could be a statistical fluke), but both experiments agree pretty well on the significance and the mass range.

"Science without religion is lame, religion without science is blind." — Albert Einstein
I am very astonished that the scientific picture of the real world around me is very deficient. It gives us a lot of factual information, puts all of our experience in a magnificently consistent order, but it is ghastly silent about all and sundry that is really near to our heart, that really matters to us. It cannot tell us a word about red and blue, bitter and sweet, physical pain and physical delight; it knows nothing of beautiful and ugly, good or bad, God and eternity. Science sometimes pretends to answer questions in these domains, but the answers are very often so silly that we are not inclined to take them seriously. — Erwin Schroedinger

This message is a reply to:
 Message 43 by cavediver, posted 12-13-2011 7:36 PM cavediver has not replied

  
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