Results 11 to 20 of about 11,724,162 (101)

First observation of π-K+ and π+K- atoms, their lifetime measurement and πK scattering lengths evaluation. [PDF]

open access: yesProceedings of 38th International Conference on High Energy Physics — PoS(ICHEP2016), 2017
he Low Energy QCD allows to calculate the $\pi\pi$ and $\pi K$ scattering lengths with high precision. There are accurate relations between these scattering lengths and $\pi^+\pi^-$, $\pi^-K^+$, $\pi^+K^-$ atoms lifetimes. The experiment on the first observation of $\pi^-K^+$ and $\pi^+K^-$ atoms is described.
openaire   +1 more source

Observation of the ψð3686ß decays into Σ+ Σ - ω and Σ+ Σ - φ

open access: yes, 2023
Based on (2712.4 +/- 14.3) x 106 events recorded at the psi(3686) nominal mass collected with the BESIII detector operating at the BEPCII collider, the psi(3686) -> E +/- E over bar -omega and E +/- E over bar -phi decays are observed for the first time with statistical significances of 13.8 sigma and 7.6 sigma, respectively.
Ablikim, M.   +7 more
openaire   +1 more source

Search for a scalar partner of the X(3872) via ψ(3770) decays into γηη' and γπ+ π- J/ψ

open access: yes, 2023
Using a data sample corresponding to an integrated luminosity of 2.93 fb(-1) collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider, we search for a scalar partner of the X(3872), denoted as X(3700), via psi(3770) gamma eta eta' and gamma pi(+)pi(-)J/psi processes.
Ablikim, M.   +7 more
openaire   +1 more source

Recent results on (ï°,ï¬) - designs and related configurations

open access: yesRevista Técnica de la Facultad de Ingeniería, 2011
Véase archivo ...
M. Deza, R. C. Mullin, S. A. Vanstone
openaire   +1 more source

(ï³,ï´)- Strongly Derivations Pairs on Rings

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2016
        Let R be an associative ring. In this paper we present the definition of (s,t)- Strongly derivation pair and Jordan (s,t)- strongly derivation pair on a ring R, and study the relation between them. Also, we study prime rings, semiprime rings, and rings that have commutator left nonzero divisior with (s,t)- strongly derivation pair, to obtain a (
openaire   +1 more source

Multiplicity dependence of σψ(2S)/σJ/ψ in pp collisions at √s=13 TeV

open access: yes
The ratio of production cross-sections of psi(2S) over J/psi mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy root s = 13 TeV is measured with a data sample collected by the LHCb detector, corresponding to an integrated luminosity of 658 pb(-1).
Aaij, R.   +5 more
openaire   +1 more source

Search for the light hadron decay χc1(3872) → π+π-η

open access: yes
For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.109 ...
Ablikim, M.   +7 more
openaire   +1 more source

Analysis of Bond Strength of Bioceramic Sealer Following Irrigation with Chlorhexidine. [PDF]

open access: yesIran Endod J
Costa LG   +5 more
europepmc   +1 more source

ï¡ - C-Compactness

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
 In this paper, we introduce a new type of compactness which is called "ï¡-ccompactness". Also, we study some properties of this type of compactness and the relationships among it and compactness, ï¡-compactness and c ...
openaire   +1 more source

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