Hi Clare they are computed in
CompositionUtils in
CompB0BchNtupleFiller::appendBRecoil
and they are defined including neutrals
	ciao
	ric
______________________________________________________
Riccardo Faccini
 U.C. San Diego, Universita' "La Sapienza" & I.N.F.N. Roma
tel  +39/06/49914338 http://www.slac.stanford.edu/~rfaccini
Univ. La Sapienza. 2,Ple Aldo Moro, I-00100 Roma
Dipartimento di Fisica

"We need serenity to accept what we cannot change, courage to change what
we can and wisdom to distinguish between the two" [R. Kiplin, allegedly]

On Wed, 30 Oct 2002, Clare Louise Brown wrote:

> Hi All,
>
> I am using the rootfiles generated with IslBrecoilUser to study b->sgamma.
> I want to look at the variables cosTBB0 and cosTBChB which represent the
> cos of the angle between the thrust of the recoil B and the thrust of the
> reconstructed B, as the exclusive b->sgamma group have shown that this
> should differ for signal and background.
>
> These variables are in the ntuples generated, however I cannot find the
> code where they are calculated. Please can someone tell me how these
> variables are formed?
> Also, I have found that in the first few rootfiles only, of genbb, gencc
> and genuds, for example:
> /nfs/farm/babar/AWG8/ISL/sx-071802/genuds/output/outputdir/genuds-2000-old2000-2.root
> /nfs/farm/babar/AWG8/ISL/sx-071802/gencc/output/outputdir/gencc-2000-old2000-6.root
> /nfs/farm/babar/AWG8/ISL/sx-071802/gen_prod/B0/output/outputdir/genB0-2000-new2000-1.root
>
> either the cosTBB0 or cosTBChB is filled with zero. Can anyone explain this?
>
> Cheers
> Clare
>
>
>