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---++ 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

<verbatim>
files:
piplus_cc1000_y.vec
piminus_cc1000_y.vec
piplus_cc2000_y.vec
piminus_cc2000_y.vec
piplus_arkcl1760_y.vec
piminus_arkcl1760_y.vec
1 row contents: rapidity y_0 (center of bin) , yield, error
piplus_cc1000_costheta_cm.vec
piminus_cc1000_costheta_cm.vec
piplus_cc2000_costheta_cm.vec
piminus_cc2000_costheta_cm.vec
piplus_arkcl1760_costheta_cm.vec
piminus_arkcl1760_costheta_cm.vec
1 row contents: cos(theta_cm) (center of bin) , yield, error

</verbatim>

*Normalization:* 

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:

*CC*

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

*ArKCl rapidity* - 
<verbatim>
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
</verbatim>


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

-- Main.PavelTlusty - 21 Jun 2013

Topic attachments
I	Attachment	Action	Size	Date	Who	Comment
zip	arkcl_y_costheta.zip	manage	1.1 K	24 Jun 2013 - 10:23	PavelTlusty	arkcl1760 LVL1
zip	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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