LHCGlauberBaseline < Main

Main Web>LHCGlauberBaseline (2018-04-21, ConstantinLoizides) (raw view)

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---+ Comprehensive publication / reference for Glauber/LHC
See http://inspirehep.net/record/1631672 which includes all parameters and tables for all relevant collision systems.
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<img src="%ATTACHURLPATH%/xs.png" alt="xs.png" width=300/>
<img src="%ATTACHURLPATH%/values.png" alt="values.png" width=200/>
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---+ Parameters for pPb Run 2012 (Not Yet Finalized?)

(Via Email on 7-June-2012 from David d'Enterria : dde@cern.ch )

<verbatim>
For sqrt(s)=5 TeV, sigma_NN = 70 (+/- 4) mb (*). Running the PHENIX Glauber MC with this sigma_NN, I
get the Ncoll,Npart values quoted here:

http://dde.web.cern.ch/dde/glauber_lhc.htm

(*) this value I get from the COMPETE fit of all PDG data up to Tevatron which is consistent with
TOTEM measurements of sigma_tot,inel at 7 TeV

cheers,

david
</verbatim>

---+ Parameters decided on 10 November 2011 for pPb (was not run in 2011)

(Via Email from David d'Enterria : dde@cern.ch )

<verbatim>

From my world-data COMPETE-based fits (consistent with the measured
7-TeV data):

<I> sigma_tot = 90.8 mb +/- 11 at sqrt(s) = 4400 GeV
<I> sigma_inel = 68.6 +/- 5.5 mb at sqrt(s) = 4400 GeV
<I> sigma_el = 22.1 +/- 2.0 mb at sqrt(s) = 4400 GeV
<I> sigma_diff = 21.9 mb +/- 1.1 at sqrt(s) = 4400 GeV

cheers,

david

</verbatim>




---+ Parameters decided on 04 November 2010 for PbPb Run
---++ !!Parameters for N+N interaction

   * Sigma Inelastic NN = 64 &plusmn; 5 mb from N+N cross section fits:

     <img src="%ATTACHURLPATH%/sigma_pp_ppbar_vs_sqrts.gif" alt="sigma_pp_vs_sqrts.gif" width='413' height='384' />

from   * [[%ATTACHURL%/glauber_lhc_nskin_5pages.pdf][glauber_lhc_nskin_5pages.pdf]]: Draft paper: D. d'Enterria, K Reygers, paper draft to be submitted

---++ !!Parameters for Glauber MC

|*A* | |208|
|**| |Wood Saxon|
|*R* | Nuclear Radius |6.62 fm |
|*a*  | Skin Depth |0.546 fm|       
|*d_min* | Inter nucleon distance |0.4 fm |
|*w* | | 0 (Spherical) |

---++ !!Control plots:

Plot/mean/rms of Npart & Ncoll in 5% most central bin in Npart variable.

   * Alice

   * Atlas

   * CMS

---+++ !!References

   * H. De Vries, C. W. De Jager and C. De Vries, Nuclear charge-density-distribution parameters from elastic electron scattering; Atomic Data and Nuclear Tables, Volume 36, Issue 3, May 1987, Pp 495-536

   * D. d'Enterria, K Reygers, to be submitted

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
gif	centrality_correlations_031110.gif	r1	manage	92.0 K	2010-11-04 - 15:57	YetkinYilmaz
pdf	glauber_lhc_nskin_5pages.pdf	r2 r1	manage	68.6 K	2011-01-14 - 17:31	DavidDEnterria	Draft paper
gif	sigma_pp_ppbar_vs_sqrts.gif	r1	manage	14.4 K	2010-12-10 - 15:33	DavidDEnterria
gif	sigma_pp_vs_sqrts.gif	r1	manage	15.9 K	2010-11-04 - 15:54	YetkinYilmaz
png	values.png	r1	manage	96.8 K	2018-04-21 - 10:41	ConstantinLoizides
png	xs.png	r1	manage	174.2 K	2018-04-21 - 10:41	ConstantinLoizides

Topic revision: r8 - 2018-04-21 - ConstantinLoizides

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