Results 21 to 30 of about 7,271 (121)

Observation of a broad structure in the pi+ pi- J/psi mass spectrum around 4.26 GeV/c2. [PDF]

open access: yesPhysical Review Letters, 2005
We study initial-state radiation events, e+ e- --> gammaISR pi+ pi- J/psi, with data collected with the BABAR detector. We observe an accumulation of events near 4.26 GeV/c2 in the invariant-mass spectrum of pi+ pi- J/psi.
B. Aubert   +499 more
semanticscholar   +1 more source

Search for an Axionlike Particle in B Meson Decays.

open access: yesPhysical Review Letters, 2022
Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in flavor-changing
J. Lees   +244 more
semanticscholar   +1 more source

Observation of time-reversal violation in the B0 meson system. [PDF]

open access: yesPhysical Review Letters, 2012
Although CP violation in the B meson system has been well established by the B factories, there has been no direct observation of time-reversal violation. The decays of entangled neutral B mesons into definite flavor states (B(0) or B(0)), and J/ψK(L)(0)
J. Lees   +365 more
semanticscholar   +1 more source

Indications for a High-Rigidity Break in the Cosmic-Ray Diffusion Coefficient. [PDF]

open access: yesPhysical Review Letters, 2017
Using cosmic-ray boron to carbon ratio (B/C) data recently released by the Ams-02 experiment, we find indications (decisive evidence, in Bayesian terms) in favor of a diffusive propagation origin for the broken power-law spectra found in protons (p) and ...
Y. Génolini   +11 more
semanticscholar   +1 more source

Search for Evidence of Baryogenesis and Dark Matter in B^{+}→ψ_{D}+p Decays at BABAR.

open access: yesPhysical Review Letters, 2023
A new dark sector antibaryon, denoted ψ_{D}, could be produced in decays of B mesons. This Letter presents a search for B^{+}→ψ_{D}+p (and the charge conjugate) decays in e^{+}e^{-} annihilations at 10.58 GeV, using data collected in the BABAR experiment.
J. Lees   +219 more
semanticscholar   +1 more source

Spectroscopy of D Mesons [PDF]

open access: yes, 2006
The scenario of heavy quark meson spectroscopy underwent recently a major revolution, after the observation of BABAR and CLEO, confirmed by BELLE, of $\DsJ$ L=1 excited states, and by further evidences by SELEX.
Bianco, Stefano
core   +2 more sources

Study of the reactions e+e−→π+π−π0π0π0 and π+π−π0π0η at center-of-mass energies from threshold to 4.35 GeV using initial-state radiation [PDF]

open access: yesPhysical Review D, 2018
Author(s): Lees, JP; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Brown, DN; Kolomensky, YG; Fritsch, M; Koch, H; Schroeder, T; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Kozyrev, EA;
J. Lees   +236 more
semanticscholar   +1 more source

Charm Spectroscopy at BaBar [PDF]

open access: yes, 2007
We present a mini-review on charm spectroscopy at the BaBar experiment. We first report on the $c\bar{s}$ meson spectrum, and present precise measurements of the $D_{s1}(2536)$ meson as well as the properties of the many new states discovered since 2003 (
Poireau, V.
core   +2 more sources

Filières maraîchères, fruitières et poulet gasy pour l'approvisionnement d'Antananarivo. Supports pédagogiques en appui à la commercialisation [PDF]

open access: yes, 2018
Le programme ASA (Agro-Sylviculture autour d'Antananarivo) de l'Union Européenne, à travers les projets Profapan et Protana, mis en oeuvre respectivement par Agrisud International et Fert, vise une plus grande insertion des producteurs aux marchés pour ...
Andriandralambo, Norontsoa   +3 more
core  

Multi-site study of a new approach to farm work within the framework of organic vegetable production: permanent crop beds [PDF]

open access: yes, 2009
The mineralization rate of a commercial organic fertiliser was evaluated over the course of three years in an organic rice field in the Camargue (France). The effect of different mounts of fertiliser applied at different periods was tested.
BERRY, D.   +4 more
core  

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