Eberhard WIDMANN
(Stefan Meyer Institute for subatomic Physics)
03/09/2017, 14:00
9) Tests of symmetries and conservation laws
The ground-state hyperfine structure (GS-HFS) of hydrogen is known from the hydrogen maser to relative precision of 10–12. It is of great interest to measure the same quantity for its antimatter counterpart, antihydrogen, to test the fundamental CPT symmetry, which states that all particles and antiparticles have exactly equal or exactly opposite properties. Since CPT is strictly conserved in...
Nishimura S.
03/09/2017, 14:25
9) Tests of symmetries and conservation laws
MuSEUM is an international collaboration aiming at new precise measurements of the muonium hyperfine structure at J-PARC (Japan Proton Accelerator Research Complex). The new high intensity muon beam that will soon be available at Muon facility will provide an opportunity to improve the precision of these measurements by one order of magnitude. An overview of the different aspects of these new...
Germano Bonomi
(University of Brescia and INFN Pavia)
03/09/2017, 14:50
9) Tests of symmetries and conservation laws
The study of the (a)symmetry between matter and antimatter is of great
interest in modern physics. Recently the antihydrogen 1S-2S levels energy difference has been measured for the first time and compared to that of
the hydrogen to test the CPT theorem. Another important aspect about the relation between matter and antimatter is gravity. Even if the general belief is that the Weak...
Arthur Olin
(TRIUMF)
03/09/2017, 15:15
9) Tests of symmetries and conservation laws
The ALPHA project at the CERN AD is testing fundamental symmetries between matter and antimatter using trapped antihydrogen atoms. The spectroscopy of the antihydrogen atom may be compared to precisely measured transitions in ordinary hydrogen. CPT conservation, which underpins our current theoretical framework, requires equality of the masses and charges of matter and its antimatter partners,...
Anna Lupato
03/09/2017, 15:40
9) Tests of symmetries and conservation laws
In the Standard Model, the three charged leptons are identical copies of each other, apart from mass differences. Experimental tests of this feature in decays of b hadrons are highly sensitive to New Physics particles which preferentially couple to the 2nd and 3rd generations of leptons. This talk will review the latest lepton universality tests at LHCb in both charged-current and...
