Matches in SemOpenAlex for { <https://semopenalex.org/work/W4281628743> ?p ?o ?g. }
- W4281628743 endingPage "69" @default.
- W4281628743 startingPage "64" @default.
- W4281628743 abstract "Abstract Though immensely successful, the standard model of particle physics does not offer any explanation as to why our Universe contains so much more matter than antimatter. A key to a dynamically generated matter–antimatter asymmetry is the existence of processes that violate the combined charge conjugation and parity (CP) symmetry 1 . As such, precision tests of CP symmetry may be used to search for physics beyond the standard model. However, hadrons decay through an interplay of strong and weak processes, quantified in terms of relative phases between the amplitudes. Although previous experiments constructed CP observables that depend on both strong and weak phases, we present an approach where sequential two-body decays of entangled multi-strange baryon–antibaryon pairs provide a separation between these phases. Our method, exploiting spin entanglement between the double-strange Ξ − baryon and its antiparticle 2 $${bar{{Xi }}}^{+}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msup> <mml:mrow> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:mrow> <mml:mo>+</mml:mo> </mml:msup> </mml:math> , has enabled a direct determination of the weak-phase difference, ( ξ P − ξ S ) = (1.2 ± 3.4 ± 0.8) × 10 −2 rad. Furthermore, three independent CP observables can be constructed from our measured parameters. The precision in the estimated parameters for a given data sample size is several orders of magnitude greater than achieved with previous methods 3 . Finally, we provide an independent measurement of the recently debated Λ decay parameter α Λ (refs. 4,5 ). The $${Lambda }bar{{Lambda }}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>Λ</mml:mi> <mml:mover> <mml:mi>Λ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> asymmetry is in agreement with and compatible in precision to the most precise previous measurement 4 ." @default.
- W4281628743 created "2022-06-13" @default.
- W4281628743 creator A5000087424 @default.
- W4281628743 creator A5000092838 @default.
- W4281628743 creator A5000182498 @default.
- W4281628743 creator A5000384068 @default.
- W4281628743 creator A5000736722 @default.
- W4281628743 creator A5001278860 @default.
- W4281628743 creator A5001427581 @default.
- W4281628743 creator A5001548753 @default.
- W4281628743 creator A5001608664 @default.
- W4281628743 creator A5001767533 @default.
- W4281628743 creator A5001776791 @default.
- W4281628743 creator A5001825755 @default.
- W4281628743 creator A5002076661 @default.
- W4281628743 creator A5002445204 @default.
- W4281628743 creator A5002455128 @default.
- W4281628743 creator A5002741579 @default.
- W4281628743 creator A5002799568 @default.
- W4281628743 creator A5002914487 @default.
- W4281628743 creator A5002944506 @default.
- W4281628743 creator A5002953479 @default.
- W4281628743 creator A5003649514 @default.
- W4281628743 creator A5003684646 @default.
- W4281628743 creator A5003901264 @default.
- W4281628743 creator A5004021273 @default.
- W4281628743 creator A5004234466 @default.
- W4281628743 creator A5004569064 @default.
- W4281628743 creator A5004976923 @default.
- W4281628743 creator A5005003969 @default.
- W4281628743 creator A5005087591 @default.
- W4281628743 creator A5005233596 @default.
- W4281628743 creator A5005300625 @default.
- W4281628743 creator A5005492958 @default.
- W4281628743 creator A5005637139 @default.
- W4281628743 creator A5005640069 @default.
- W4281628743 creator A5005678515 @default.
- W4281628743 creator A5006165246 @default.
- W4281628743 creator A5006373770 @default.
- W4281628743 creator A5007052712 @default.
- W4281628743 creator A5007521972 @default.
- W4281628743 creator A5007777982 @default.
- W4281628743 creator A5007949901 @default.
- W4281628743 creator A5007952413 @default.
- W4281628743 creator A5008026291 @default.
- W4281628743 creator A5008222665 @default.
- W4281628743 creator A5008703505 @default.
- W4281628743 creator A5008729216 @default.
- W4281628743 creator A5008888187 @default.
- W4281628743 creator A5008900347 @default.
- W4281628743 creator A5008934975 @default.
- W4281628743 creator A5009105369 @default.
- W4281628743 creator A5009209746 @default.
- W4281628743 creator A5009226645 @default.
- W4281628743 creator A5009400991 @default.
- W4281628743 creator A5009464122 @default.
- W4281628743 creator A5009613230 @default.
- W4281628743 creator A5009835561 @default.
- W4281628743 creator A5010016403 @default.
- W4281628743 creator A5010434236 @default.
- W4281628743 creator A5010509701 @default.
- W4281628743 creator A5010715411 @default.
- W4281628743 creator A5010759562 @default.
- W4281628743 creator A5011053023 @default.
- W4281628743 creator A5011356039 @default.
- W4281628743 creator A5011687499 @default.
- W4281628743 creator A5012149258 @default.
- W4281628743 creator A5012153627 @default.
- W4281628743 creator A5012673180 @default.
- W4281628743 creator A5012694867 @default.
- W4281628743 creator A5012858566 @default.
- W4281628743 creator A5013162528 @default.
- W4281628743 creator A5013233801 @default.
- W4281628743 creator A5013384490 @default.
- W4281628743 creator A5013538892 @default.
- W4281628743 creator A5013551150 @default.
- W4281628743 creator A5014582617 @default.
- W4281628743 creator A5014823477 @default.
- W4281628743 creator A5014878255 @default.
- W4281628743 creator A5015050532 @default.
- W4281628743 creator A5015057268 @default.
- W4281628743 creator A5015424991 @default.
- W4281628743 creator A5015456779 @default.
- W4281628743 creator A5015529510 @default.
- W4281628743 creator A5015592819 @default.
- W4281628743 creator A5015633793 @default.
- W4281628743 creator A5015989323 @default.
- W4281628743 creator A5016098491 @default.
- W4281628743 creator A5016380445 @default.
- W4281628743 creator A5016673681 @default.
- W4281628743 creator A5016749710 @default.
- W4281628743 creator A5016934514 @default.
- W4281628743 creator A5016986856 @default.
- W4281628743 creator A5017029884 @default.
- W4281628743 creator A5017100408 @default.
- W4281628743 creator A5017259922 @default.
- W4281628743 creator A5017277796 @default.
- W4281628743 creator A5017366700 @default.