Message-Id: <200112042243.HAA03242@neutrino.kek.jp> To: Jorge_G_Morfin <morfin@fnal.gov> Cc: opc.nuint01 Subject: Re: The Exciting NuTeV result due to nuclear effects? Date: Wed, 05 Dec 2001 07:43:04 +0900 From: Makoto Sakuda <sakuda@neutrino.kek.jp> Dear Jorge and Adam, I am sorry for my late reply. Last week when I received Jorge's request for NuTeV report on sin2(thetaW), we were in the middle of the K2K collaboration meeting and I was not able to asnwer. The day before yesterday, when we were about to announce the program in Web, I heard a bad news that Bernstein (NuTeV) had to cancell the trip to NuInt01 since his division is prohibiting a foreign travel. So, I was not sure whether we would have a NuTeV report on sin2(thetaW) at all. Personally, I was about to propose that Bernstein (NuTeV) may present the result of sin2(thetaW) (3 sigma effect) briefly for 10 min after his NuTeV cross section measurements or at the end of the 2nd day. This morning, I received a message from Bernstein that he cannot come after all. Too bad. Jorge, is anyone from NuTeV coming to the workshop if Bernstern does not come?? Besides sin2(thetaW), is anyone reporting on nu_mu/nu_mu_bar NuTeV cross section measurements? If not, can we have some figures of NuTeV cross sections for the workshop?? We will update the Web as soon as I hear your suggestion. You can see a nearly final program in Web. One change: Y. Obayashi (KEK) who has been studying the CP phase measurement in the future JHF superbeam is giving a talk in the first session which Dave volunteered. He wants to concentrate on MC generator session, and he and Japanese OPC members agree. By the way, K2K meeting is over. We will be able to show the results which we planned originally. Regards, Makoto Sakuda > Date: Tue, 4 Dec 2001 11:12:45 -0600 > From: Jorge_G_Morfin <morfin@fnal.gov> > To: Adam Para <para@fsgi03.fnal.gov> > cc: <opc.nuint01@neutrino.kek.jp> > Subject: Re: The Exciting NuTeV result due to nuclear effects? > In-Reply-To: <200112041637.fB4GbE76642845@fsgi03.fnal.gov> > Message-ID: <Pine.SGI.4.31.0112041045420.2519625-100000@fsgi01.fnal.gov> > MIME-Version: 1.0 > Content-Type: TEXT/PLAIN; charset=US-ASCII > > Hi Adam, > > I don't know why you are making this so complicated? > We do not need to review the NuTeV analysis to make a real > contribution. I'm suggesting we take advantage of having the world's > experts on nuclear effects in neutrino interactions, gathered in one > place, to address a question of nuclear effects in neutrino interactions! > I also believe that there is a difference in the nuclear effects > between NC and CC and I'd like to take advantage of the assembled > expertise to see if we might better understand the physics and, perhaps, > the size of the difference. Sharing this accumulated wisdom with NuTeV > for inclusion in their analysis (if, as I suspect, they have not > considered detailed nuclear corrections) or comparison with what they have > done can only help the community understand their result. > This is just another opinion... > Jorge > > > On Tue, 4 Dec 2001, Adam Para wrote: > > > Jorge, > > this is an internal matter of NuTeV. It requires a very detailed knowledge of > > what and how they have done in the analysis. It is a waste of time to discuss > > such things in a vacuum. > > Given the different space-time structure of the weak current and the > > diffewrent charge states I think it is quite obvious that the nuclear effects > > are different for W's and Z's. The hadronic final states are different, you do > > or do not have a muon to loose energy ion the nucleus. > > The real question is how all these things were accounted for in the analysis. > > This is a good question, but it is quite remote from the goals of the workshop. > > > > But this is just an opinion.. > > > > Adam > > ======================================================================== > > Adam Para para@fnal.gov > > Fermi National Accelerator Lab PHONE: (630)840-2132 > > Computing Division/Special Assignment Group FAX: (630)840-6039 > > ======================================================================== > > > > >
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