Publications related to Study of Η → Π+ Π- l+ l-

Related publications (13)

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

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

Strong and Weak CP Tests in Sequential Decays of Polarized Σ0 Hyperons

Yunxuan Song

The J/psi,psi(3686) -> Sigma(0)(Sigma) over bar (0) processes and subsequent decays are studied using the world's largest J/psi and psi(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays Sigma(0) -> L ...

American Physical Society (APS)2024

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

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

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

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

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

Direct CP violation in charmless three-body decays of B± mesons

Lesya Shchutska

Measurements of CP asymmetries in charmless three-body decays of B± mesons are reported using proton-proton collision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.9 fb−1. The previously observed CP asymmetry in B±→π± ...

American Physical Society2023

Observation of the Bs0 ⁣→D∗+D∗− decay

Lesya Shchutska

The first observation of the Bs0→ D∗+D∗− decay and the measurement of its branching ratio relative to the B0→ D∗+D∗− decay are presented. The data sample used corresponds to an integrated luminosity of 9 fb−1−1 of proton-proton collisions recorded by the ...

Springer Nature2023

Observation of four top quark production in proton-proton collisions at √s=13 TeV

Jan Steggemann, Konstantin Androsov, Anna Mascellani, Joanna Malgorzata Wanczyk

The observation of the production of four top quarks in proton-proton collisions is reported, based on a data sample collected by the CMS experiment at a center-of-mass energy of 13 TeV in 2016-2018 at the CERN LHC and corresponding to an integrated lumino ...

Elsevier2023

Open charm production and asymmetry in pNe collisions at √sNN = 68.5 GeV

Lesya Shchutska

A measurement of D0 meson production by the LHCb experiment in its fixed-target configuration is presented. The production of D0 mesons is studied with a beam of 2.5 TeVTeV protons colliding on a gaseous neon target at rest, corresponding to a nucleon–nuc ...

2023

Study of Η → Π<sup>+</sup> Π<sup>-</sup> <i>l</i><sup>+</sup> <i>l</i><sup>-</sup>

Graph Chatbot

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

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

Strong and Weak CP Tests in Sequential Decays of Polarized Σ0 Hyperons

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

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

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

Neutrino signal from Cygnus region of the Milky Way

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

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

Direct CP violation in charmless three-body decays of B± mesons

Observation of the Bs0 ⁣→D∗+D∗− decay

Observation of four top quark production in proton-proton collisions at √s=13 TeV

Open charm production and asymmetry in pNe collisions at √sNN = 68.5 GeV