[Tpe] TPE momentum corrections

[Larry Weinstein]

Dear Folks,

I looked at Dipak's momentum corrections for positive torus polarity.  I 
see two effects:
  1) the peak position in sector 4 improves after the correction
  2) none of the widths improve
  3) the correction does not factor into a phi-dependent piece and a 
theta-dependent piece (links 69-72 on Dipak's latest page).
  4) the sector 4 correction is very different for link 62 (positive 
torus polarity run 67287) and for link 11 (unspecified torus polarity or 
run number).  Since it is so different I assume that polarity is reversed.

We need a more global approach to all this.  Dipak - have you looked at 
number of (e,e'p pi+ pi-) events there are?

-- 
				Sincerely,
				Larry

-----------------------------------------------------------
Lawrence Weinstein
University Professor
Physics Department
Old Dominion University
Norfolk, VA 23529
757 683 5803
757 683 3038 (fax)
weinstein at odu.edu
http://www.lions.odu.edu/~lweinste/