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--- gaudi:modifyparticletable [2011/09/06 15:59] – created decianm
+++ gaudi:modifyparticletable [2011/09/14 09:35] (current) – che
@@ Line 2: / Line 2: @@
 ===== Idea =====
 You can modify the properties of particles, which are stored in the DDDB under param/ParticleTable.txt. This can be useful e.g. in Gauss.
-===== How to =====
+===== How (not) to =====
-This example is for Gauss v40r2p3. In Gauss-Job.py (or similar, write):
+This example is for Gauss v40r2p3 and does not fully seem to work. In Gauss-Job.py (or similar) write:
 <code python>
-ParticlePropertySvc().Particles = [ "K*_2(1430)0         153         315  0.0        0.100000   1.0e-10                    K_2*0         315        0.0", "K*_2(1430)~0        154        -315  0.0        0.100000   1.0e-10               anti-K_2*0        -315        0.0" ]
+from Configurables import LHCb__ParticlePropertySvc as ParticlePropertySvc
+ParticlePropertySvc().Particles = [ "K*_2(1430)0         153         315  0.0        0.100000   1.0e-10                    K_2*0         315        0.0",
+                                    "K*_2(1430)~0        154        -315  0.0        0.100000   1.0e-10               anti-K_2*0        -315        0.0" ]
 ApplicationMgr().ExtSvc    += [ ParticlePropertySvc() ]
 </code>
+if you want to modify the properties of the K*_2(1430) and its antiparticle. The columns are:
+<file>
+Particle GeantID PDGID CHARGE MASS(GeV) LIFETIME(s) EVTGENNAME PYTHIAID MAXWIDTH
+</file>
+  * **Note**: You have to write all the modifications in one list.
+If this does not give you what you want, try adding in your someNumber.opts file:
+<code python>
+ParticlePropertySvc.Particles = { "K*_2(1430)0         153         315  0.0        0.100000   1.0e-10                    K_2*0         315        0.0",
+                                  "K*_2(1430)~0        154        -315  0.0        0.100000   1.0e-10               anti-K_2*0        -315        0.0" };
+</code>
+===== Check =====
+At the beginning of your Gauss job, you should then see something like:
+<code>
+ParticlePropertySvc        INFO Opened particle properties file : conddb:///param/ParticleTable.txt
+ParticlePropertySvc     SUCCESS  Add/Modify the particle:  name='K*_2(1430)0' geant=153 jetset=315 charge=0 mass=0.1 ltime=1e-10 evtgen='K_2*0' pythia=315 maxwid=0
+ParticlePropertySvc        INFO Properties have been redefined for 1 particles : [ 'K*_2(1430)0' ]
+ParticlePropertySvc     SUCCESS  Add/Modify the particle:  name='K*_2(1430)~0' geant=154 jetset=-315 charge=0 mass=0.1 ltime=1e-10 evtgen='anti-K_2*0' pythia=-315 maxwid=0
+ParticlePropertySvc        INFO Properties have been redefined for 1 particles : [ 'K*_2(1430)~0' ]
+</code>

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