Simulating photonuclear interactions with MMC
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Transcript of Simulating photonuclear interactions with MMC
Simulating photonuclear interactions with MMC
Dmitry Chirkin
UC Berkeley
The ModelsQ2
1 GeV2soft hard
photoproduction DIS
GVDM CKMT ALLM
Bezrukov-Bugaev Butkevich-Mikheyev Abramowicz Levin Levy Maor
1991 19972002BB 1981
BB + Hard 03Bugaev Shlepin
ZEUS 94
Kokoulin 99
Nuclear effects
Dutta Smirnov
All photonuclear cross sections
• As generated by MMC
Standard rockWater
Sources
• ALLM: Dutta, Seckel, et al. 2000
• BB, ZEUS, BB+BS, ALLM: Sokalski et al. 2002
• BM, BB: Butkevich, Mikheyev 2002
• BB, BB+BS, ALLM for taus: Bugaev et al. 2003
• BB, BB+BS for taus: Bugaev, Shlepin 2003
ALLM
• Photon-nucleon cross section
from Dutta Seckel
ALLM
• Muon photonuclear cross section from Dutta Seckel
from Dutta Seckel
Bezrukov-Bugaev
• Comparison of BB1981 and ZEUS95 parameterizations
from Sokalski
BB+Bugaev-Shlepin
Comparison with BB1981, ALLM, and Butkevich-Mikheyev
from Sokalski
from Bugaev Shlepin
Butkevich-Mikheyev
• BM, BB
from Butkevich Mikheyev
from Sokalski
BB+Bugaev-Shlepin (taus)
• BB+BS, ALLM: tau propagation
from Bugaev
from Bugaev Shlepin
Conclusions
• Plots of photonuclear cross section change from one publication to another, some of this can be explained by use of different shadowing functions.
• ALLM 97 parameterization is currently used in AMANDA. Its results are very similar to Butkevich-Mikheyev parameterization.
• Switching to the newer nuclear structure function as described in B-M will bring the ALLM 97 model closer to the new BB+BS parameterization.