las vegas - NA44 fit pictures

NA44 DATA WITH FREEZER CALCULATIONS SUPERIMPOSED

After Freezer converges and produces a solution (see previous slide), you can use program Plotfrz to make some pictures, and superimpose them onthe data.

This is NA44 data and Freezer calculations for pi+. The vertical scale is absolute in both cases. Since the program consideres each data point and its error bar independently in the calculation of the global chi**2, you can see that it tends to get the low-pt points right, but takes more liberties with the high-pt points.
Same for the Kaons.
Even though we have no data outside of a very narrow slice around mid-rapidity, we can still ask Freezer/Plotfrz what the dn/dy looks like.

HvH, ACS meeting, September '97, Las Vegas back to the index

	This is NA44 data and Freezer calculations for pi+. The vertical scale is absolute in both cases. Since the program consideres each data point and its error bar independently in the calculation of the global chi**2, you can see that it tends to get the low-pt points right, but takes more liberties with the high-pt points.
	Same for the Kaons.
	Even though we have no data outside of a very narrow slice around mid-rapidity, we can still ask Freezer/Plotfrz what the dn/dy looks like.