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arXiv · 1909.13716

Study of muon pair production from positron annihilation at threshold energy

N. Amapane·M. Antonelli·F. Anulli·G. Ballerini·L. Bandiera·N. Bartosik·M. Bauce·A. Bertolin·C. Biino·O. R. Blanco-Garcia·M. Boscolo·C. Brizzolari·A. Cappati·M. Casarsa·G. Cavoto·F. Collamati·G. Cotto·C. Curatolo·R. Di Nardo·F. Gonella·S. Hoh·M. Iafrati·F. Iacoangeli·B. Kiani·D. Lucchesi·V. Mascagna·A. Paccagnella·N. Pastrone·J. Pazzini·M. Pelliccioni·B. Ponzio·M. Prest·M. Ricci·R. Rossin·M. Rotondo·O. Sans Planell·L. Sestini·M. Soldani·A. Triossi·E. Vallazza·S. Ventura·M. Zanetti
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Abstract

The muon collider represents one of the most promising solutions for a future machine exploring the high energy frontier, but several challenges due to the 2.2 $μ$sec muon lifetime at rest have to be carefully considered. The LEMMA project is investigating the possibility of producing low emittance muon/antimuon pairs from the e$^+$e$^-$ annihilation process at threshold energy, resulting in small transverse emittance beams without any additional beam cooling. However most of the measurements available are performed at higher $\sqrt{s}$ values. It is therefore necessary to measure muons production in positron annihilation at threshold energy and compare the experimental results with the predictions in this specific energy regime. Apart from being a topic of physical interest by itself, these near to threshold measurements can have a sizeable impact on the estimation of the ultimate luminosity achievable in a muon collider with the LEMMA injection scheme.

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N. Amapane, M. Antonelli, F. Anulli, G. Ballerini, L. Bandiera, N. Bartosik, M. Bauce, A. Bertolin, C. Biino, O. R. Blanco-Garcia, M. Boscolo, C. Brizzolari, A. Cappati, M. Casarsa, G. Cavoto, F. Collamati, G. Cotto, C. Curatolo, R. Di Nardo, F. Gonella, S. Hoh, M. Iafrati, F. Iacoangeli, B. Kiani, D. Lucchesi, V. Mascagna, A. Paccagnella, N. Pastrone, J. Pazzini, M. Pelliccioni, B. Ponzio, M. Prest, M. Ricci, R. Rossin, M. Rotondo, O. Sans Planell, L. Sestini, M. Soldani, A. Triossi, E. Vallazza, S. Ventura, M. Zanetti. 2020-01-10. Study of muon pair production from positron annihilation at threshold energy. https://doi.org/10.1088/1748-0221%2F15%2F01%2Fp01036

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