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I review the experimental evidence for the $X(3915)$, the candidate nonstandard meson associated with $omega Jpsi$ resonance-like peaks in $Brightarrow Komega Jpsi$ and $gammagammarightarrowomega Jpsi$ near $M(omega Jpsi)=3920$~MeV, and address the conjecture that it can be identified as the $chi_{c2}^prime$, the radial excitation of the $chi_{c2}$ charmonium state. Since the partial decay width for $Brightarrow K X(3915)$ is at least an order-of-magnitude larger than that for $Brightarrow Kchi_{c2}$, its assignment as the $chi_{c2}^prime$ is dubious.
We comment on the recent claim for the experimental observation of neutrinoless double-beta decay. We discuss several limitations in the analysis provided in that paper and conclude that there is no basis for the presented claim.
It has been proposed recently (Phys. Rev. Lett. 115 (2015), 022001) that the charmoniumlike state named X(3915) and suggested to be a $0^{++}$ scalar, is just the helicity-0 realisation of the $2^{++}$ tensor state $chi_{c2}(3930)$. This scenario wou
QCD-motivated models for hadrons predict an assortment of exotic hadrons that have structures that are more complex than the quark-antiquark mesons and three-quark baryons of the original quark-parton model. These include pentaquark baryons, the six-
The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy recovery technology, it collides a novel, intense electron beam wit
The paper gives an overview of strangeness-production experiments at the Cooler Synchrotron COSY. Results on kaon-pair and $phi$ meson production in $pp$, $pd$ and $dd$ collisions, hyperon-production experiments and $Lambda p$ final-state interaction