From: yin.zhongbao@fi.uib.no
Date: Wed Nov 20 2002 - 06:04:10 EST
On Wed, 20 Nov 2002, Djamel Ouerdane wrote: > On Wed, 20 Nov 2002, Yin Zhongbao wrote: > > > Dear brahms-dev, > > > > I think it could be done in preloop to evaluate 1/beta-1/beta(calculated) > > and R-R(calculated). > > What's that ? As I understand it is rich radius. > > > And it would be nice since it gives momentum > > dependent values. But for high momentum case or some other setting, I am > > not sure if we have enough statistics, may one fit it with a function when > > there are enough statistics and give a general function good to > > extrapolate to low statistic case. > > > > My concern goes to the method CalculateMomentum. There may have an > > assumption that the track has passed through all of detectors in FS and > > momenta pd2, pd3 and pd4 are reconstructed. Otherwise, for example, if pd4 > > = 0 it may give a wrong value. Is it not possible to happen? > > don't worry about that, there's a boolean flag as far as I remember which > should prevent from falling into these situations. I am sorry, I just can't see the boolean flag although there are some boolean flags. > > Djam > > > > > > > Thanks for discussion. > > > > Best regards, > > Zhongbao > > > > -- ----------------------------------------------------- Zhongbao YIN Phone: +47-55-582792 (O) Address: +47-55-276803 (H) Fantoftveien 14G 466 E-mail: 5075 Bergen Yin.Zhongbao@fi.uib.no ------------------------------------------------------
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