Scientific Results

The FAMU experiment: muonic hydrogen high precision spectroscopy studies

Year: 2020

Authors: Pizzolotto C., Adamczak A., Bakalov D., Baldazzi G., Baruzzo M., Benocci R., Bertoni R., Bonesini M., Bonvicini V., Cabrera H., Cirrincione D., Citossi M., Chignoli F., Clemenza M., Colace L., Danailov M., Danev P., de Bari A., De Vecchi C., de Vincenzi M., Fasci E., Furlanetto E., Fuschino F., Gadedjisso-Tossou KS., Gianfrani L., Guffanti D., Hillier AD., Ishida K., King PJC., Labanti C., Maggi V., Mazza R., Menegolli A., Mocchiutti E., Moretti L., Morgante G., Niemela J., Patrizi B., Pirri A., Pullia A., Ramponi R., Rignanese LP., Roman HE., Rossella M., Sarkar R., Sbrizzi A., Stoilov M., Stoychev L., Suarez-Vargas J.J., Toci G., Tortora L., Vallazza E., Vannini M., Xiao C., Zampa G., Vacchi A.

Autors Affiliation: Sez INFN Trieste, Via A Valerio 2, Trieste, Italy; Polish Acad Sci, Inst Nucl Phys, Radzikowskiego 152, PL-31342 Krakow, Poland; Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Blvd Tsarigradsko Ch 72, Sofia 1784, Bulgaria; Sez INFN Bologna, Viale Berti Pichat 6-2, Bologna, Italy;‎ Univ Udine, Dipartimento Sci Matemat Informat & Fis, Via Sci 206, Udine, Italy; Sez INFN Milano Bicocca, Piazza Sci 3, Milan, Italy; Univ Milano Bicocca, Dipartimento Sci Ambiente & Terra, Piazza Sci 1, Milan, Italy; Univ Milano Bicocca, Dipartimento Fis G Occhialini, Piazza Sci 3, Milan, Italy; Sez INFN Roma Tre, Via Vasca Navale 84, Rome, Italy; Univ Roma Tre, Dipartimento Ingn, Via V Volterra 62, Rome, Italy; Sincrotrone Elettra Trieste, SS14,Km 163-5, Basovizza, Italy;‎ Univ Pavia, Dipartimento Fis, Via A Bassi 6, Pavia, Italy; Sez INFN Pavia, Via A Bassi 6, Pavia, Italy; Univ Roma Tre, Dipartimento Matemat & Fis, Via Vasca Navale 84, Rome, Italy; Univ Campania Luigi Vanvitelli, Sez INFN Napoli, Viale Lincoln 5, Caserta, Italy; Univ Campania Luigi Vanvitelli, Dipartimento Matemat & Fis, Viale Lincoln 5, Caserta, Italy; INAF OAS Bologna, Via P Gobetti 93-3, Bologna, Italy; Abdus Salam Int Ctr Theoret Phys, Str Costiera 11, Trieste, Italy; Univ Lome, Dept Phys, Lab Phys Composants Semicond LPCS, Lome, Togo; Gran Sasso Sci Inst, Via F Crispi 7, Laquila, Italy;‎ STFC Rutherford Appleton Lab, ISIS Neutron & Muon Source, Didcot OX11 0QX, Oxon, England; RIKEN, Riken Nishina Ctr, 2-1 Hirosawa, Wako, Saitama 3510198, Japan; INO CNR, Via Madonna Piano 10, I-50019 Sesto Fiorentino, Italy; IFAC CNR, Via Madonna Piano 10, I-50019 Sesto Fiorentino, Italy; Sez INFN Milano, Via Celoria 16, Milan, Italy;‎ Univ Milan, Dipartimento Fis, Via Celoria 16, Milan, Italy; Politecn Milan, Dipartimento Fis, IFN CNR, Piazza Leonardo da Vinci 32, Milan, Italy; Indian Ctr Space Phys, Kolkata, India;‎ Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China

Abstract: The FAMU experiment aims to measure for the first time the hyperfine splitting of the muonic hydrogen ground state. From this measurement the proton Zemach radius can be derived and this will shed light on the determination of the proton charge radius. In this paper, we describe the scientific goal, the method and the detailed preparatory work. This includes the outcome of preliminary measurements, subsequent refined simulations and the evaluation of the expected results. The experimental setup being built for the measurement of the hyperfine splitting to be performed at the RAL laboratory muon facility is also described.


Volume: 56 (7)      Pages from: 185-1  to: 185-15

DOI: 10.1140/epja/s10050-020-00195-9

Citations: 2
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