From: Andy Beretvas 
To: smaria@fnal.gov, burkett@fnal.gov, williams@williams.hep.upenn.edu,
     slaughter@fnal.gov, castro@fnal.gov
Cc: andy@cdfsga.fnal.gov
Subject: Kaluza-Klein paper  ...

					Aug. 14, 2000


	A few comments on "Search for Kaluza-Klein Graviton Emission ..."

	Paper is presented in a very clear manner.




	1) Reference numbers are out of order [3], [6]

Response

 fixed and found another two out of order-- thanks 

	2) Fig 3 (delta phi_min). Do you have this plot for the four backgrounds
	   and for graviton production? Do the different backgrounds have the
	   same shape? Is three any other variable that has a different
	   shape for graviton production?
      
Response

 Yes, we have studied these (see note 5151); there was no variable we found with 
distict shape. 

	3) Will the limits improve as we go to sqrt(s) = 1.96 TeV ?

Response

 Yes,  especially if we keep the uncertainty on the luminosity measurement low (<3%)

	4) check number for R = 6

	      R^{6} = (1/8*pi)(M_pl/M_D)^(2)(hbar*c/M_D)^(6)

	      R     =(1/8*pi)^(1/6)(M_pl/M_D)^(1/3)(hbar*c)/M_D)

	      M_D = 0.71 TeV

	      M_pl = 1.221 *10^(16) TeV

	      hbar*c  = 197.3 MeV fm = 197.3 *10^{-6} TeV *10^{-15} m

	      hbar*c/M_D = 1.973/0.71 *10^{-19} m

	      R      = 0.5843* 2.581 *10^(5)*2.779 *10^(-19) = 4.19*10^(-14) m

	      R      = 41.9*10^(-15) m = 42 fm

		Looks good!


Response

 Thanks for the check! 





	Best Regards
	Andy

 Thanks for your comments and for reading the article