Dear Steve, Here is the definition of exclusive measurement of interactions what the community (mainly HEP) understand and use. "A measurement of particle interactions in which all participating particles are identified and measured or computed in momentum (for the opposite, Inclusive Measurement of Interactions). Exclusive measurements including all particles of an interaction are usually possible only at relatively low laboratory energies and for simple interaction types like two- and three-body final states. " The word "exclusive" is rarely used in the heavy ion community, because it's very hard to measure a HI event exclusively, as we all know. JH ----- Original Message ----- From: "Stephen J. Sanders" <ssanders@ku.edu> To: <brahms-l@bnl.gov> Sent: Wednesday, November 21, 2001 12:05 PM Subject: Re: MULT PAPER. vers. 33. That's it. > Hi JH, > This statement has been bothering me since it suggests I have the wrong > idea the difference between exclusive and inclusive measurements. > With the spectrometer arms we can determe the particle type and > momentum: I would consider that to be an "exclusive" measurement > since we know everything there is to know. This is in contrast with, > for example, the si and tile detectors where we only and deduce the > number of particles--what I would consider to be an inclusive measurement. > In this context, I think the wording in the draft if correct. > Or, are you taking issue with the admittedly abbreviated use of > "magnetic spectrometers" to stand for "magnetic spectrometers with Cherenkov > and time-of-flight paritcle identification"? > > Regards, Steve > > > > - page 3: "The BRAHMS experiment consists of ... for measuring > > > > exclusive charged particle..." > > > > We measure inclusive and semi-inclusive spectra, but certainly can't > > > > measure exclusive particle spectra. > > >
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