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Simulating Photonuclear Interactions with MMC: Advancing Photoproduction Models

This work presents a comprehensive simulation of photonuclear interactions utilizing the MMC framework. It explores various models of photoproduction, including DIS and the Q² evolution from soft to hard processes at 1 GeV². Key parameterizations like BB, ALLM, and results from ZEUS experiments are compared, highlighting nuclear effects and cross-section variations. The findings indicate that the current ALLM 97 parameterization aligns closely with the Butkevich-Mikheyev model. Understanding these interactions is crucial for advancements in neutrino physics and nuclear structure functions.

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Simulating Photonuclear Interactions with MMC: Advancing Photoproduction Models

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  1. Simulating photonuclear interactions with MMC Dmitry Chirkin UC Berkeley

  2. The Models photoproduction DIS Q2 soft hard 1 GeV2 Abramowicz Levin Levy Maor Bezrukov-Bugaev Butkevich-Mikheyev BB 1981 2002 1991 1997 ZEUS 94 Nuclear effects BB + Hard 03 Bugaev Shlepin Kokoulin 99 Dutta Smirnov

  3. All photonuclear cross sections • As generated by MMC Standard rock Water

  4. 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

  5. ALLM from Dutta Seckel • Photon-nucleon cross section

  6. ALLM from Dutta Seckel • Muon photonuclear cross section from Dutta Seckel

  7. Bezrukov-Bugaev from Sokalski • Comparison of BB1981 and ZEUS95 parameterizations

  8. BB+Bugaev-Shlepin from Bugaev Shlepin Comparison with BB1981, ALLM, and Butkevich-Mikheyev from Sokalski

  9. Butkevich-Mikheyev from Butkevich Mikheyev • BM, BB from Sokalski

  10. BB+Bugaev-Shlepin (taus) from Bugaev • BB+BS, ALLM: tau propagation from Bugaev Shlepin

  11. 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.

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