pi+ and pi- rapidity and cos(theta_cm) spectra for C+C at 1 and 2 A GeV, and Ar+KCl at 1.76 A GeV

yields for LVL1 triggered events: mult_charged>=4 for C+C and mult_charged>=16 for Ar+KCl

rapidity in y_0 = (y_lab-y_cm)/y_cm , y_cm = 0.677 and y_cm=0.904 for C+C at 1 and 2 A GeV, and 0.857 for Ar+KCl at 1.76 A GeV

yields in rapidity bins extrapolated to low p_T region outside the acceptance

yields in cos(theta_cm) bins for momenta inside the HADES acceptance and PID cuts: 200 <= mom_cm < 800 MeV/c

1 row contents: rapidity y_0 (center of bin) , yield, error
1 row contents: cos(theta_cm) (center of bin) , yield, error


to one LVL1 event, to unit in rapidity (y_0) or cos(theta_cm)

trigger bias:

To get multiplicity for minimum bias, the data points have to be divided by the trigger enhancement factor F = A_part(LVL1)/A_part(min.bias):

CC1 8.61/6

CC2 8.38/6

ArKCl 38.5/19.25

data are published in:


spectra as in Fig. 11 and 12 in Eur. Phys. J. A 40 (2009) 45 (also arXiv:0902.4377 [nucl-ex])

ArKCl rapidity -
published only for pi- in in Fig.3, Phys.Rev.C82:044907,2010      (arXiv:1004.3881 [nucl-ex])
(shown data are from independent analysis of A. Schmah but difference from "my" numbers are within errors).

For pi+ only integral yield is shown in conf. proceedings arXiv:0906.2309v1 (Bormio 2009) in Table 1

ArKCl cos(theta_cm) spectra as in Fig. 2 arXiv:0906.2309v1 (Bormio 2009)

-- PavelTlusty - 21 Jun 2013
Topic attachments
I Attachment Action Size Date Who Comment
arkcl_y_costheta.zipzip arkcl_y_costheta.zip manage 1.1 K 24 Jun 2013 - 10:23 PavelTlusty arkcl1760 LVL1
cc_y_costheta.zipzip cc_y_costheta.zip manage 2.0 K 21 Jun 2013 - 11:31 PavelTlusty zip
Topic revision: r2 - 24 Jun 2013, PavelTlusty
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