Prospects for precise predictions of $a_\mu$ in the Standard Model

Autor: Colangelo, G., Davier, M., El-Khadra, A. X., Hoferichter, M., Lehner, C., Lellouch, L., Mibe, T., Roberts, B. L., Teubner, T., Wittig, H., Ananthanarayan, B., Bashir, A., Bijnens, J., Blum, T., Boyle, P., Bray-Ali, N., Caprini, I., Calame, C. M. Carloni, Catà, O., Cè, M., Charles, J., Christ, N. H., Curciarello, F., Danilkin, I., Das, D., Deineka, O., Della Morte, M., Denig, A., DeTar, C. E., Dominguez, C. A., Eichmann, G., Fischer, C. S., Gérardin, A., Giusti, D., Golterman, M., Gottlieb, Steven, Gülpers, V., Hagelstein, F., Hayakawa, M., Hermansson-Truedsson, N., Hoid, B. -L., Holz, S., Izubuchi, T., Jüttner, A., Keshavarzi, A., Knecht, M., Kronfeld, A. S., Kubis, B., Kupść, A., Lahert, S., Liu, K. F., Lüdtke, J., Lynch, M., Malaescu, B., Maltman, K., Marciano, W., Marinković, M. K., Masjuan, P., Meyer, H. B., Müller, S. E., Neil, E. T., Passera, M., Pepe, M., Peris, S., Petrov, A. A., Procura, M., Raya, K., Rebhan, A., Risch, A., Rodríguez-Sánchez, A., Roig, P., Sánchez-Puertas, P., Simula, S., Stoffer, P., Stokes, F. M., Sugar, R., Tsang, J. T., van de Water, R. S., Avilés-Casco, A. Vaquero, Venanzoni, G., von Hippel, G. M., Zhang, Z.

We discuss the prospects for improving the precision on the hadronic corrections to the anomalous magnetic moment of the muon, and the plans of the Muon $g-2$ Theory Initiative to update the Standard Model prediction.
Comment: Contribution to th

Externí odkaz: http://arxiv.org/abs/2203.15810

The anomalous magnetic moment of the muon in the Standard Model

Autor: Aoyama, T., Asmussen, N., Benayoun, M., Bijnens, J., Blum, T., Bruno, M., Caprini, I., Calame, C. M. Carloni, Cè, M., Colangelo, G., Curciarello, F., Czyż, H., Danilkin, I., Davier, M., Davies, C. T. H., Della Morte, M., Eidelman, S. I., El-Khadra, A. X., Gérardin, A., Giusti, D., Golterman, M., Gottlieb, Steven, Gülpers, V., Hagelstein, F., Hayakawa, M., Herdoíza, G., Hertzog, D. W., Hoecker, A., Hoferichter, M., Hoid, B. -L., Hudspith, R. J., Ignatov, F., Izubuchi, T., Jegerlehner, F., Jin, L., Keshavarzi, A., Kinoshita, T., Kubis, B., Kupich, A., Kupść, A., Laub, L., Lehner, C., Lellouch, L., Logashenko, I., Malaescu, B., Maltman, K., Marinković, M. K., Masjuan, P., Meyer, A. S., Meyer, H. B., Mibe, T., Miura, K., Müller, S. E., Nio, M., Nomura, D., Nyffeler, A., Pascalutsa, V., Passera, M., del Rio, E. Perez, Peris, S., Portelli, A., Procura, M., Redmer, C. F., Roberts, B. L., Sánchez-Puertas, P., Serednyakov, S., Shwartz, B., Simula, S., Stöckinger, D., Stöckinger-Kim, H., Stoffer, P., Teubner, T., Van de Water, R., Vanderhaeghen, M., Venanzoni, G., von Hippel, G., Wittig, H., Zhang, Z., Achasov, M. N., Bashir, A., Cardoso, N., Chakraborty, B., Chao, E. -H., Charles, J., Crivellin, A., Deineka, O., Denig, A., DeTar, C., Dominguez, C. A., Dorokhov, A. E., Druzhinin, V. P., Eichmann, G., Fael, M., Fischer, C. S., Gámiz, E., Gelzer, Z., Green, J. R., Guellati-Khelifa, S., Hatton, D., Hermansson-Truedsson, N., Holz, S., Hörz, B., Knecht, M., Koponen, J., Kronfeld, A. S., Laiho, J., Leupold, S., Mackenzie, P. B., Marciano, W. J., McNeile, C., Mohler, D., Monnard, J., Neil, E. T., Nesterenko, A. V., Ottnad, K., Pauk, V., Radzhabov, A. E., de Rafael, E., Raya, K., Risch, A., Rodríguez-Sánchez, A., Roig, P., José, T. San, Solodov, E. P., Sugar, R., Todyshev, K. Yu., Vainshtein, A., Avilés-Casco, A. Vaquero, Weil, E., Wilhelm, J., Williams, R., Zhevlakov, A. S.

Publikováno v: Phys. Rept. 887 (2020) 1-166

We review the present status of the Standard Model calculation of the anomalous magnetic moment of the muon. This is performed in a perturbative expansion in the fine-structure constant $\alpha$ and is broken down into pure QED, electroweak, and hadr

Externí odkaz: http://arxiv.org/abs/2006.04822

New physics at the MUonE experiment at CERN

Autor: Masiero, A., Paradisi, P., Passera, M.

Publikováno v: Phys. Rev. D 102, 075013 (2020)

A confirmation of the long-standing muon $g$-2 discrepancy requires both experimental and theoretical progress. On the theory side, the hadronic corrections are under close scrutiny, as they induce the leading uncertainty of the Standard Model predic

Externí odkaz: http://arxiv.org/abs/2002.05418

Measuring the leading hadronic contribution to the muon g-2 via $\mu\,e$ scattering

Autor: Abbiendi, G., Calame, C. M. Carloni, Marconi, U., Matteuzzi, C., Montagna, G., Nicrosini, O., Passera, M., Piccinini, F., Tenchini, R., Trentadue, L., Venanzoni, G.

We propose a new experiment to measure the running of the fine-structure constant in the space-like region by scattering high-energy muons on atomic electrons of a low-Z target through the process $\mu e \to \mu e$. The differential cross section of

Externí odkaz: http://arxiv.org/abs/1609.08987

Precision tests via radiative $\mu$ and $\tau$ leptonic decays

Autor: Fael, M., Passera, M.

The branching fractions of radiative leptonic $\tau$ decays $(\tau \to l \nu \bar{\nu} \gamma$, $l=e,\mu)$ were recently measured by the Babar collaboration with a relative error of about 3%. The measurement of the branching ratio $\mathcal{B} (\tau

Externí odkaz: http://arxiv.org/abs/1602.00457