Precise measurement of hadronic cross section at low energy for alpha_em(M_Z0) and (g-2)_mu

Not scheduled

Speaker

Dr Graziano Venanzoni (LNF)

Description

For the precision test of the Standard Model at future e+e- colliders (like TLEP or ILC), as well as for the reduction of the theoretical error of the Muon (g-2), an improvement on the knowledge of the low energy non perturbative effects is mandatory. These effects to alpha_em(M_Z0) and to (g-2)_mu can be obtained by precise measurements of the hadronic cross sections at low e+e- machine (i.e. around few GeV), like Dafne and other flavour factories.

Summary

Si sottolinea l'importanza di supportare le facilities e+e- a bassa energia esistenti (come per esempio Dafne) o nuove (nuove flavour factories), per la misura di precisione della sezione d'urto e+e- in adroni per la riduzione dell'incertezza sul contributo adronico al running di alpha_em e al (g-2) del muone. Tale incertezza, se non opportunamente ridotta puo' diventare un fattore limitante per il fit EW del Modello Standard ai futuri collisori e+e- tipo TLEP o ILC, o per la misura del g-2 del muone.
Ref:

http://arxiv.org/abs/hep-ph/0608329
http://arxiv.org/abs/arXiv:1007.5219
http://arxiv.org/abs/arXiv:1308.6176
http://arxiv.org/abs/arXiv:1307.7967

Primary author

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