Simulating photonuclear interactions with MMC Dmitry Chirkin UC

Simulating photonuclear interactions with MMC Dmitry Chirkin UC Berkeley

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

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

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 from Dutta Seckel • Photon-nucleon cross section

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

Bezrukov-Bugaev from Sokalski • Comparison of BB 1981 and ZEUS 95 parameterizations

BB+Bugaev-Shlepin from Bugaev Shlepin from Sokalski Comparison with BB 1981, ALLM, and Butkevich-Mikheyev

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

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

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.