Simulating photonuclear interactions with MMC

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Simulating photonuclear interactions with MMC

• Dmitry Chirkin
• UC Berkeley

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The Models
photoproduction
DIS
Q2
soft
hard
1 GeV2
GVDM CKMT ALLM
Abramowicz Levin Levy Maor
Bezrukov-Bugaev
Butkevich-Mikheyev
1991
1997
2002
BB 1981
ZEUS 94
Nuclear effects
BB Hard 03 Bugaev Shlepin
Kokoulin 99
Dutta
Smirnov
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All photonuclear cross sections
Standard rock
Water

• As generated by MMC

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Sources

• ALLM Dutta, Seckel, et al. 2000
• BB, ZEUS, BBBS, ALLM Sokalski et al. 2002
• BM, BB Butkevich, Mikheyev 2002
• BB, BBBS, ALLM for taus Bugaev et al. 2003
• BB, BBBS for taus Bugaev, Shlepin 2003

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ALLM
from Dutta Seckel

• Photon-nucleon cross section

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ALLM
from Dutta Seckel

• Muon photonuclear cross section from Dutta Seckel

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Bezrukov-Bugaev
from Sokalski

• Comparison of BB1981 and ZEUS95 parameterizations

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BBBugaev-Shlepin
from Bugaev Shlepin
from Sokalski

• Comparison with BB1981, ALLM, and
  Butkevich-Mikheyev

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Butkevich-Mikheyev
from Butkevich Mikheyev
from Sokalski

• BM, BB

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BBBugaev-Shlepin (taus)
from Bugaev
from Bugaev Shlepin

• BBBS, ALLM tau propagation

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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 BBBS parameterization.