Publications related to Strong and Weak CP Tests in Sequential Decays of Polarized Σ<sup>0</sup> Hyperons

Related publications (9)

Study of Η → Π+ Π- l+ l-

Using a sample of (10087 +/- 44) x 10(6) J/psi events accumulated with the BESIII detector, we analyze the decays eta -> pi(+) pi(-) l(+) l(-) (l = e or mu) via the process J/psi -> gamma eta. The branching fraction of eta -> pi(+) pi(-) e(+) e(-) is measu ...

AMER PHYSICAL SOC2025

Observation of an Axial-vector State in the Study of the Decay Ψ(3686) → Φηη'

Yunxuan Song

Using (2712.4 +/- 14.3) x 10(6) psi(3686) events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay psi(3686) ->phi eta eta' is performed with the covariant tensor approach. In addition to the established states h(1)(1900) a ...

AMER PHYSICAL SOC2025

Measurement of Born cross section of e+e- → ς0 ς ¯ 0 at s =3.50-4.95 GeV

Yunxuan Song

Using e+e- collision data collected with the BESIII detector at the BEPCII collider at 32 center-of-mass energies from 3.50 to 4.95 GeV, corresponding to an integrated luminosity of 25 fb-1, we measure the Born cross section of the e+e-→ς0ς¯0 reaction and ...

2025

Observation of χcJ → p(p)over-barKS0K- π+ + c.c

Yunxuan Song

By analyzing (27.12 +/- 0.14) x 10(8) psi(3686) events collected with the BESIII detector operating at the BEPCII collider, the decays chi(cJ) -> p (p) over barK(S)(0)K(-)pi(+) + c.c. (J = 0, 1, 2) are observed for the first time with statistical significa ...

American Physical Society2024

Neutrino signal from Cygnus region of the Milky Way

Andrii Neronov

Interactions of cosmic-ray protons and nuclei in their sources and in the interstellar medium produce "hadronic" 7-ray emission. Gamma rays can also be of "leptonic" origin, i.e., originating from high-energy electrons accelerated together with protons. It ...

American Physical Society2024

Search for X(1870) via the decay J/ψ → ωK+K-η

Yunxuan Song

Using a sample of (10087 +/- 44) x 10(6) J/psi events collected by the BESIII detector at the BEPCII collider, we search for the decay X(1870) -> K+K-eta via the J/psi -> omega K+K-eta process for the first time. No significant X(1870) signal is observed. ...

American Physical Society2024

Amplitude analysis and branching fraction measurement of B+→D∗−Ds+π+ decays

Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Sebastian Schulte, Donal Patrick Hill, Marie Theres Christin Bachmayer, Serhii Cholak, Ettore Zaffaroni, Surapat Ek-In, Aravindhan Venkateswaran, Luis Miguel Garcia Martin, Vitalii Lisovskyi, Elisabeth Maria Niel, Federico Ronchetti, Radoslav Marchevski, Anni Matilda Kauniskangas, Dimitrios Kaminaris, Raphaël van Laak, Pierre Paul Louis Mayencourt, Brianna Leililani Thielen, Gianluca Zunica, Abdul-Kerim Guseinov, Esteban Curras Rivera, Yifei Song

The decays of the B+ meson to the final state D∗−Ds+π+ are studied in proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1. The ratio of branc ...

Springer Nature2024

Measurement of CP asymmetries in D(s)+ -> ηπ+ and D(s)+ -> η'π+ decays

Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Michel De Cian, Vladimir Macko, Sebastian Schulte, Donal Patrick Hill, Maria Vieites Diaz, Marie Theres Christin Bachmayer, Lino Ferreira Lopes, Matthieu Philippe Luther Marinangeli, Serhii Cholak, Veronica Sølund Kirsebom, Ettore Zaffaroni, Surapat Ek-In, Ana Bárbara Rodrigues Cavalcante, Sara Celani, Renato Quagliani, Carina Trippl, Sonia Amina Bouchiba, Alison Maria Tully, Elisabeth Maria Niel, Maarten Willibrord Uriël Van Dijk

Searches for CP violation in the decays D(s)+ -> ηπ+ and D(s)+ -> η'π+ are performed using pp collision data corresponding to 6 fb(-1) of integrated luminosity collected by the LHCb experiment. The calibration channels D(s)+ -> ηπ+ and D(s)+ -> ϕπ+ are use ...

Springer Nature2023

Search for CP violation in the phase space of D0 → π−π+π0 decays with the energy test

Lesya Shchutska

A search for CP violation in D0 → π−π+π0 decays is reported, using pp collision data collected by the LHCb experiment from 2015 to 2018 corresponding to an integrated luminosity of 6 fb−1. An unbinned model-independent approach provides sensitivity to loca ...

2023