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m_t plots for pi+ and pi- from C+C at 1 and 2A !GeV are compared to pi0 from TAPS. <BR>
TAPS data points are from R. Averbeck (published in R. Averbeck Z. Phys. A359 (1997) 65, Fig.5), and show 1/(m_t*m_t)*d(sigma)/dm_t at midrapidity (rapidity windows
are 0.42-0.74 and 0.80-1.08 for 1 and 2 !GeV, respectively). Then the TAPS points are re-calculated to the 1(m_t*m_t)*dN/dm_t assuming total cross section 950 mb,
and corrected to minimum bias by a ratio of number of participants 8.61/6. and 8.38/6. 1 and 2 !GeV, respectively. <BR>
2 figures show the comparison for 1 and 2 !GeV in 4 plots: a) HADES pi+ b)HADES pi- c) TAPS pi0 d) HADES pi- and TAPS pi0.<BR>
  
<BR>
Note that the fit of the TAPS data shows the same (small) slope error (~0.3 !MeV) as fits of our data by 1 slope. The errors are almost same for fits in the same range as HADES data and in the range shown in the Fig.5 of the TAPS paper.  Errors published by TAPS are larger: 3 and 2 !MeV for 1 and 2 !GeV data.

   * c1c: <br />
    <img src="%ATTACHURLPATH%/mt_pi_c1c_hades_taps.gif" alt="c1c"  width="1096" height="674"  />

   * c2c: <br />
    <img src="%ATTACHURLPATH%/mt_pi_c2c_hades_taps.gif" alt="c2c"  width="1096" height="674"  />

Now the same comparison as above, for cross section: The HADES points are re-calculated to the 1(m_t*m_t)*dsigma/dm_t assuming total cross section 950 mb,
and corrected to minimum bias by a ratio of number of participants 8.61/6. and 8.38/6. 1 and 2 !GeV, respectively. <BR>

-- Main.PavelTlusty - 11 Nov 2008

   * c1c: <br />
    <img src="%ATTACHURLPATH%/mt_pi_c1c_hades_taps_normtaps.gif" alt="c1c"  width="1096" height="674"  />

   * c2c: <br />
    <img src="%ATTACHURLPATH%/mt_pi_c2c_hades_taps_normtaps.gif" alt="c2c"  width="1096" height="674"  />


Comparison of cross section within the TAPS acceptance:<BR>
                1 !GeV               2 !GeV<BR>
TAPS  pi0        68+-5            117+-15  <BR>
HADES pi+        60.1             115<BR>
HADES pi-        62.4             122<BR>

   * c1c m_t: <br />
    <img src="%ATTACHURLPATH%/mt_pi_c1c_hades_taps_inset.gif" alt="c1c m_t"  width="1096" height="674"  />

   * c2c m_t: <br />
    <img src="%ATTACHURLPATH%/mt_pi_c2c_hades_taps_inset.gif" alt="c2c m_t"  width="1096" height="674"  />

   * c1c p_t: <br />
    <img src="%ATTACHURLPATH%/c1c_pt_hades_taps_liny.gif" alt="c1c p_t"  width="1096" height="674"  />

   * c2c p_t: <br />
    <img src="%ATTACHURLPATH%/c2c_pt_hades_taps_liny.gif" alt="c2c p_t"  width="1096" height="674"  />

Topic attachments
I	Attachment	Action	Size	Date	Who	Comment
gif	c1c_pt_hades_taps_liny.gif	manage	16.3 K	05 Dec 2008 - 13:10	PavelTlusty	c1c p_t
gif	c2c_pt_hades_taps_liny.gif	manage	17.2 K	05 Dec 2008 - 13:10	PavelTlusty	c2c p_t
gif	mt_pi_c1c_hades_taps.gif	manage	29.3 K	11 Nov 2008 - 08:19	PavelTlusty	c1c
gif	mt_pi_c1c_hades_taps_inset.gif	manage	19.9 K	05 Dec 2008 - 10:27	PavelTlusty	c1c m_t
gif	mt_pi_c1c_hades_taps_normtaps.gif	manage	28.9 K	13 Nov 2008 - 10:49	PavelTlusty	c1c
gif	mt_pi_c2c_hades_taps.gif	manage	30.0 K	11 Nov 2008 - 08:20	PavelTlusty	c2c
gif	mt_pi_c2c_hades_taps_inset.gif	manage	19.7 K	05 Dec 2008 - 10:28	PavelTlusty	c2c m_t
gif	mt_pi_c2c_hades_taps_normtaps.gif	manage	29.5 K	13 Nov 2008 - 10:50	PavelTlusty	c2c

Topic revision: r5 - 05 Dec 2008, PavelTlusty

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