"nan" value in "test_out_final_state_hadrons.dat" and in terminal log for iSS.

[nikhilhatwar]

Hi,

I am trying to use xscape1.1 with ( trento + MUSIC + iSS ) codes. The input files which I am using are attached. In the terminal log for the compilation of iSS module, I get the following message:

[Info] 1.048e+04 MB Index: 320, Name: Anti-p-2250, Monte-carlo index: -12210
[Info] 1.048e+04 MB  -- Sampling using dN_dy=0.00109502, dN=0.00109502...

sample_using_dN_dxtdy_4all_particles finished in 2.737 seconds.
perform resonance decays... 
[Info] 1.048e+04 MB Averaged total energy and momentum:
**[Info] 1.048e+04 MB <P[0]> = -nan +/- -nan GeV.
[Info] 1.048e+04 MB <P[1]> = -nan +/- -nan GeV.
[Info] 1.048e+04 MB <P[2]> = -nan +/- -nan GeV.
[Info] 1.048e+04 MB <P[3]> = -nan +/- -nan GeV.**
[Info] 10484MB  iSS finished.

Are these "nan" values a cause of concern? Also, a couple of lines in "test_out_final_state_hadrons.dat" have "nan" as shown below:

232 211 11 287.591 0.104743 -0.16817 -287.591
233 321 11 0.94871 0.0816901 -0.212973 0.777164
234 111 11 0.281683 0.167084 -0.168332 -0.063627
235 -311 11 -nan -nan -nan -nan
236 -211 11 -nan -nan -nan -nan
237 2212 11 1940.38 -0.197463 -0.173799 -1940.38
238 -2112 11 140.448 -0.243618 0.575815 -140.444
239 211 11 0.606825 -0.226888 -0.0380792 -0.544301
240 111 11 0.309861 0.0627464 -0.126231 -0.238953

What could the cause of these "nan"?

In addition, could you please tell me if the use of second hydro module necessary to incorporate the effect of jet interaction with hydro ? Or in other words, does the liquifier work only if we include a second hydro module? If the answer to this is a "no", then what is the function of liquifier with just one hydro module?

inputs.zip

[chunshen1987]

Hi,

Since you used a random seed depending on local time, I can't reproduce your error. I ran a few test runs on my side and I did not get any "nan" from the simulations.

Chun