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Taus and EW Meeting

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Taus and EW Meeting
Zoom Meeting ID
63944306727
Host
Maria Cepeda
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Attendence: ~ 18-20 people connected

 

Exploring LFV decays at FCC-ee - search for experimental collaboration

 - Alberto L. : collaborators to explore experimental sensitivity (most sensitive could be tau -> mu gamma)

 - Maria C. : nice interplay with the display graphics. Target for June ? Extented what was done by Alberto, Cristina & Maria could be interested in joining this effort.

 - Stephane M. : Z->mutau sensitivity might be driven by a fundamental limitation Ztautau + a muon from a beam. What's about the H->mutau decay?

 - Stephane M. : main limitation for mu->egamma ? Physics background Z->tautau + ISR and tau ->mu vv. No radical improvement for FCCee on this. Even a fast sim could help to estimate the sensitivity. Calo resolution is crucial here.

 - Romain M. : how to make the pattern of operators useful ? simultaneous contraints can be displayed together with different predictions from UV models

 

Impact of Z decays on LFV theories

- Olcyr S. : tau->mu rho vs tau->3mu ... Intersting to study these channels too. Impact from nuclear uncertainties on slide 16 -- how are they estimated ? The knowledge of mu->e conversion in nuclei has a big impact on these bounds.

 

Roundtable on reconstruction tools

- Maria C. : the code is in Sofia area, but maybe having in the official repo would be nice. What's the pT threhold of the seed jet of the tau-candidate : 2 GeV ?

- Guy. W. : efficiency is the most important (s.7 of Sofia) ? Probably the migration matrix in each method is more important than efficiency. Aurélien : a student will start to explore this migration matrix

- Alberto L. / Maria C.: decay in charge pion or charged kaon in pandora, no distinction yet. Some studies exist but not yet in pandaro. To be In the whish list of pandora?

- Maria C.: important point to perform a benchmark comparison setup. Which detector simulation for the migration matrix, because it's very good -> CLD full simulation. 

- Aurélien M.: good efficiency but did you check the hadron mass distribution distortion ?

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