Precision measurement of the mass difference between light nuclei and anti-nuclei
dc.contributor.author | ALICE Collaboration | |
dc.date.accessioned | 2015-10-27T11:54:16Z | |
dc.date.available | 2015-10-27T11:54:16Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | ALICE Collaboration. (2015). Precision measurement of the mass difference between light nuclei and anti-nuclei. <i>Nature Physics</i>, <i>11</i>(10), 811-814. <a href="https://doi.org/10.1038/nphys3432" target="_blank">https://doi.org/10.1038/nphys3432</a> | |
dc.identifier.other | CONVID_25248943 | |
dc.identifier.other | TUTKAID_67534 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/47469 | |
dc.description.abstract | The measurement of the mass di erences for systems bound by the strong force has reached a very high precision with protons and anti-protons1,2 . The extension of such measurement from (anti-)baryons to (anti-)nuclei allows one to probe any di erence in the interactions between nucleons and antinucleons encoded in the (anti-)nuclei masses. This force is a remnant of the underlying strong interaction among quarks and gluons and can be described by e ective theories3 , but cannot yet be directly derived from quantum chromodynamics. Here we report a measurement of the di erence between the ratios of the mass and charge of deuterons (d) and anti-deuterons (d), ¯ and 3He and 3He nuclei carried out with the ALICE (A Large Ion Collider Experiment)4 detector in Pb–Pb collisions at a centre-of-mass energy per nucleon pair of 2.76 TeV. Our direct measurement of the mass-over-charge di erences confirms CPT invariance to an unprecedented precision in the sector of light nuclei5,6 . This fundamental symmetry of nature, which exchanges particles with anti-particles, implies that all physics laws are the same under the simultaneous reversal of charge(s) (charge conjugation C), reflection of spatial coordinates (parity transformation P) and time inversion (T). | |
dc.language.iso | eng | |
dc.publisher | Nature Publishing Group | |
dc.relation.ispartofseries | Nature Physics | |
dc.subject.other | anti-nuclei | |
dc.subject.other | mass | |
dc.subject.other | mass measurement | |
dc.title | Precision measurement of the mass difference between light nuclei and anti-nuclei | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-201510263493 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.date.updated | 2015-10-26T16:15:03Z | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.format.pagerange | 811-814 | |
dc.relation.issn | 1745-2473 | |
dc.relation.numberinseries | 10 | |
dc.relation.volume | 11 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2015 Macmillan Publishers Limited. This is an open access article licensed under a Creative Commons Attribution 4.0 International License. | |
dc.rights.accesslevel | openAccess | fi |
dc.rights.url | http://creativecommons.org/licenses/by/4.0/ | |
dc.relation.doi | 10.1038/nphys3432 | |
dc.type.okm | A1 |