Dechang Dai, Glenn Starkman, Dejan Stojkovic, Cigdem Issever , Eram Rizvi, Jeff Tseng 08.05.2008

1. BlackMax, a new BH generatorarXiv:0711.3012 [hep-ph], Physical Review D (Vol.77, No.7)http://www-pnp.physics.ox.ac.uk/~issever/BlackMax/blackmax.html Dechang Dai,Glenn Starkman, Dejan Stojkovic, Cigdem Issever, Eram Rizvi, Jeff Tseng 08.05.2008 ATLAS UK SUSY/Exotics Meeting

2. Motivation Generator to study theoretical uncertainties Extra dimension models Black hole production Black hole evaporation C. Issever, University of Oxford

3. What does it provide • three extra dimension models • tensionless branes • allows branes with positive tension • brane splitting • BH scenarios • simulates rotating BH • color and electric charge are taken into account • bulk recoil • where grey body factors available  graviton emission • simulates Planckian BHs  two body final states • user can change parameters which a based on assumptions to study uncertainties C. Issever, University of Oxford

4. Simulated scenarios in BlackMax • Non-rotating BHs • on a tensionless brane with bulk graviton emission • on a tensionless brane with fermion brane splitting • on a non-zero tension brane, with bulk gravitons, d = 5 • Rotating BH on a tensionless brane, no bulk gravitons • Two-particle final states C. Issever, University of Oxford

5. quark Rs quark Black Hole Production • Non-linear formation • Before settling to a stationary phase assume some fraction of energy, linear and angular momentum • These fractions can be set by user • Yoshino suppression factors will be included in the next release. C. Issever, University of Oxford

6. Black Hole Evaporation balding spin - down final burst schwarzschild H: L ~ 5:1 N. Brett C. Issever, University of Oxford

7. Black Hole Evolution • User can choose electric and color charge suppression • Angular momentum suppression can be set by user • Once BH reaches Planck Mass  Final Burst • Produce a set of SM particles which conserve energy, charges and angular momentum. • BlackMax is conserving baryon numbers, but violating flavour and lepton numbers • Future: will make B,L and flavour violation optional for non-split fermion scenarios C. Issever, University of Oxford

8. BH Cross Section on brane with tension f B is inverse proportional to tension of the brane B ~ 1/f C. Issever, University of Oxford

9. BHs in Split Fermion Scenario In split fermion mode|l: Final state of black hole events at the LHC will be mainly jets. C. Issever, University of Oxford

10. BH cross section in split fermion scenario C. Issever, University of Oxford

11. Cross Section for Two-Body Final State C. Issever, University of Oxford

12. Feedback from Community • Very important • We try to incorporate user’s needs as quickly as possible • e.g: • Baryon, Lepton numbers and flauvor conservation • We will make it optional for the next release • Choose different Planck scale definitions (next release) C. Issever, University of Oxford

13. Summary • BlackMax includes a comprehensive ranges of current models and BH scenarios • Enables study of theoretical uncertainties • Has bulk graviton emission where grey body factors are available • Is currently being interfaced into ATHENA Next Release (May/June 08) • Graviton emission in final state burst • Baryon, Lepton and flavour number conservation option to choose for user in non-split brane models • Yoshiro&Rhykov factors will be included • Different definition of Planck Scales • Bug fixes (thanks to Michiru Kaneda) C. Issever, University of Oxford

14. Backup Slides C. Issever, University of Oxford

15. Comparison with Charybdis Michiru Kaneda C. Issever, University of Oxford

16. Comparisons with Charybdis Michiru Kaneda C. Issever, University of Oxford

17. Comparisons with Charybdis Michiru Kaneda C. Issever, University of Oxford

18. Used Planck Scale Definition • Definition in PDG • d = total number of space dimensions • Gd higher dimensional gravitational constant C. Issever, University of Oxford

19. BH cross section on tensionless brane C. Issever, University of Oxford