Difference between revisions of "Dilepton"

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= Introduction =
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= Mailing List =
  
= meeting =
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ee@jlab.org
  
  '''Date''' Every other week 9:30AM ET
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register at https://mailman.jlab.org/mailman/listinfo/ee
  '''Location''' ?
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 +
= Meeting =
 +
 
 +
  '''Date''' Thursday 9:00AM ET
 +
  '''Location''' F228
 
  '''Conference ID''' 7572696671
 
  '''Conference ID''' 7572696671
 
  '''Desktop sharing and video''' https://bluejeans.com/7572696671
 
  '''Desktop sharing and video''' https://bluejeans.com/7572696671
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  '''meeting system "bluejeans" howto''' https://hallaweb.jlab.org/wiki/index.php/Bluejeans_howto
 
  '''meeting system "bluejeans" howto''' https://hallaweb.jlab.org/wiki/index.php/Bluejeans_howto
  
= program =
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=== [[ meetings ]] ===  
 
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<br>
[[SoLID_JPsi]]
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[[TCS]]
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[[DDVCS]]
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= emaillist =
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ee@jlab.org
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register at https://mailman.jlab.org/mailman/listinfo/ee
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= generator =
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== generator by Marie Boer ==
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** 2015
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*** the generator code is at /work/halla/solid/mboer/Generator, see "Readme" file there
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*** output root file from the generator for 15cm LH2 target /volatile/halla/solid/mboer/Generator/
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*** output root file with acceptance from the acceptance code  /volatile/halla/solid/zwzhao/dilepton on disk, /mss/halla/solid/zwzhao/dilepton on tape
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*** plots and table https://userweb.jlab.org/~zwzhao/dilepton/
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** 2016
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*** output root file from the generator /lustre/expphy/work/hallb/clasg10/rafopar/DDVCS/Job_out
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*** output root file with acceptance from the analysis code /home/zwzhao/work_halla/dilepton/generator/
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**** original_2016_04_21/DEEPGen_*.root, original file
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**** DDVCS_2016_04_21/DEEPGen_*_SoLID_DDVCS_JPsiSetup_muon_3rdFAMD_1stLAMD.root, file with acceptance, use entry "accep_3fold_eloutdecaypair_FA" or "accep_3fold_eloutdecaypair_FALA" for physics study
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**** original_2016_05_14/DEEPGen_*.root, original file
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**** DDVCS_2016_05_14/DEEPGen_*_SoLID_DDVCS_JPsiSetup_muon_3rdFAMD_1stLAMD.root, file with acceptance, use entry "accep_3fold_eloutdecaypair_FA" or "accep_3fold_eloutdecaypair_FALA" for physics study
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** acceptance codes are in SVN https://jlabsvn.jlab.org/svnroot/solid/evgen/dilepton/, see "readme" file there
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== JPsi ==
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JPsi electroproduction from proton, home made
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https://jlabsvn.jlab.org/svnroot/solid/evgen/JPsi/
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== genTCS ==
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BH from quasi-real electron by EPA and real photon on proton target, home made
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https://jlabsvn.jlab.org/svnroot/solid/evgen/genTCS
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== grape-dilepton  ==
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* http://research.kek.jp/people/tabe/grape
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* BH from electron on proton, used by the experiments at DESY/HERA
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* see details how to run it and analysis result at https://jlabsvn.jlab.org/svnroot/solid/evgen/BH/readme
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* file sharing
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** /home/zwzhao/work_solid/BH/grape-dilepton_work/BH_muon_3fold_decaypairelectron_deg5-50
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== LPAIR ==
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** used by the experiments at DESY/HERA
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== Compton2.0 ==
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** BH from photoproduction, used by ZEUS
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== GiBUU ==
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= Physics Topics =
** http://gibuu.hepforge.org
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(It may work on neutron also)
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GiBUU does a good job with real photons on a proton (or heavier)
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target.  It doesn't handle electroproduction as nicely (at least not the
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last time I asked the Giessen group).
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It is fairly straight forward to generate events, and there USED to be
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good examples of input jobcards on the website, but they have been removed
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recently while they upgrade.  I'd think the best route is to email them
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directly to get the code and also ask for the example jobcards.
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== hepgen ==
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[[ TCS | Timelike Compton Scattering (TCS) ]]
  
http://project-gpd-full-chain-mc.web.cern.ch/project-gpd-full-chain-mc/hepgen/
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[[ Jpsi | Near-Threshold J/Ψ production ]]
  
HEPGEN (Hard Exclusive Production GENerator) is a dedicated Monte Carlo generator of events, which is used for studies of hard exclusive leptoproduction processes at the COMPASS experiment kinematic domain. The studied reactions comprise both single photon production via Deeply Virtual Compton Scattering (DVCS) and Bethe-Heitler (BH) process as well as hard exclusive production of various mesons (HEMP). In addition to exclusive processes, HEPGEN allows also to generate events of single photon or meson production accompanied by the diffractive dissociation of the nucleon, which is one of the main sources of background in analyses of exclusive processes.
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[[ penta | Charmonium pentaquark ]]
  
== genev ==
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[[ DDVCS |  Double DVCS ]]
  
<pre>
 
the event generator that we
 
used in the past for the study of vector meson electroproduction at CLAS(12).
 
In this event generator, originally written by our Italian
 
colleagues from Genova, there is the possibility
 
to generate 2-pion electroproduction.
 
You can find the source code of this "genev" event generator
 
in the "/u/home/guidal/genev" directory on the JLab machines.
 
I haven't compiled this code for ages. The Makefile probably
 
needs to be modified/updated.
 
I just renamed the original main source file "genev_orig.f" and I replaced
 
it by a newer "genev.f", which I modified a few years ago to
 
have the event generator working up to 12 GeV JLab energies
 
(orginally the code was working only for 6 GeV). I implemented
 
this "upgrade" mostly for the rho, omega and phi channels,
 
I am not 100% sure that it also applies to non-resonant 2-pion.
 
You will have to check.
 
The input file is "genev.inp" where you see the list
 
of channels available; in particular for 2-pion, you should
 
take "15".
 
The output of the event generator is in "hbook" format.
 
</pre>
 
  
<pre>
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= Experiments and Letters of Intent =
by following the README, I can compile code close to your original by
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login ifarml64
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source /group/clas/builds/64bit/environment64.orig.csh
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setenv CLAS_LIB /u/group/clas/builds/64bit/NIGHTLY/2010-10-13-r1492/build/lib
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setenv CERN_ROOT /u/site/cernlib/x86_64_rhel4/2005
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edit Makefile to replace "-L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/" with "-L/usr/lib/gcc/x86_64-redhat-linux/4.4.7/"
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make
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</pre>
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download at https://userweb.jlab.org/~zwzhao/DDVCS/genev_guidal.tgz
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* E12-12-001 "Timelike Compton Scattering and J/ψ photoproduction on the proton in e+e- pair production with CLAS12 at 11 GeV"<br>
 +
Proposal https://www.jlab.org/exp_prog/proposals/12/PR12-12-001.pdf was approved for 120 PAC days in CLAS12 by PAC 39.
  
some info
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* [[ SoLID_JPsi | E12-12-006 "Near Threshold Electroproduction of J/Ψ at 11 GeV" ]]<br>
https://www.ge.infn.it/~batta/genev.html
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Proposal https://www.jlab.org/exp_prog/proposals/12/PR12-12-006.pdf was approved for 60 PAC days in SoLID by PAC 39.
https://www.ge.infn.it/~batta/genev/
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other fork?
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* E12-12-006A "TCS with circularly polarized beam and unpolarized LH2 target"
https://clasweb.jlab.org/wiki/index.php/Event_generator
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Run group proposal https://www.jlab.org/exp_prog/proposals/15/PR12-12-006A.pdf approved by the SoLID collaboration.
https://clasweb.jlab.org/wiki/index.php/Genev_clas12
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== "genev_clas12" Exclusive 2pi generator from Iuliia ==
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* LOI12-15-007 "Timelike Compton Scattering on the transversely polarized proton at 11 GeV"
 +
LOI https://www.jlab.org/exp_prog/proposals/15/LOI12-15-007.pdf was submitted to PAC 43.
  
slide for intruction
 
https://www.jlab.org/indico/event/114/session/3/contribution/111/material/slides/0.pdf
 
  
CLAS data in database
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= Software and Analysis tools =
http://clas.sinp.msu.ru/cgi-bin/jlab/db.cgi?beam=1;beam_pol=0;tgt=proton;tz=;ta=;target_pol=0;final=4;final_pol=0;q2min=;q2max=;wmin=;wmax=;xmin=;xmax=;ephmin=;ephmax=;authors=;year=;eid=;selected-fields=id;selected-fields=final;selected-fields=q2min;selected-fields=q2max;selected-fields=wmin;selected-fields=wmax;selected-fields=quantity;selected-fields=title;selected-fields=authors;selected-fields=year;limit=100;search=Start%20search;ofs=1300
+
  
wiki
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=== generators ===
https://clasweb.jlab.org/wiki/index.php/NEW_2PI_EVENT_GENERATOR
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extension to W(3-4.5)GeV
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List of [[ Dilepton_generator | Dilepton generators ]]
https://clasweb.jlab.org/wiki/index.php/13._Extension_to_the_region_W:_3.0375_-_4.5375_GeV
+

Latest revision as of 16:26, 2 March 2017

Mailing List

ee@jlab.org

register at https://mailman.jlab.org/mailman/listinfo/ee

Meeting

Date Thursday 9:00AM ET
Location F228
Conference ID 	7572696671
Desktop sharing and video https://bluejeans.com/7572696671
(You don't need to call in by phone if your PC has a mic and a speaker, 
but do REMEMBER to turn off mic and speaker to avoid echo if you use phoneline for audio)
Audio Dial: 18882402560 (US or Canada only) (see all numbers) and enter the Conference ID
meeting system "bluejeans" howto https://hallaweb.jlab.org/wiki/index.php/Bluejeans_howto

meetings


Physics Topics

Timelike Compton Scattering (TCS)

Near-Threshold J/Ψ production

Charmonium pentaquark

Double DVCS


Experiments and Letters of Intent

  • E12-12-001 "Timelike Compton Scattering and J/ψ photoproduction on the proton in e+e- pair production with CLAS12 at 11 GeV"

Proposal https://www.jlab.org/exp_prog/proposals/12/PR12-12-001.pdf was approved for 120 PAC days in CLAS12 by PAC 39.

Proposal https://www.jlab.org/exp_prog/proposals/12/PR12-12-006.pdf was approved for 60 PAC days in SoLID by PAC 39.

  • E12-12-006A "TCS with circularly polarized beam and unpolarized LH2 target"

Run group proposal https://www.jlab.org/exp_prog/proposals/15/PR12-12-006A.pdf approved by the SoLID collaboration.

  • LOI12-15-007 "Timelike Compton Scattering on the transversely polarized proton at 11 GeV"

LOI https://www.jlab.org/exp_prog/proposals/15/LOI12-15-007.pdf was submitted to PAC 43.


Software and Analysis tools

generators

List of Dilepton generators