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Measurement of Born cross sections of $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ and search for charmonium(-like) states at $$ \sqrt{s} $$ = 3.51–4.95 GeV

Using e+e− collision data collected by the BESIII detector at BEPCII corresponding to an integrated luminosity of 30 fb−1, we measure Born cross sections and effective form factors for the process e+e−→Ξ0Ξ¯0 at forty-five center-of-mass energies between 3.51 and 4.95 GeV. The dressed cross section is fitted, assuming a power-law function plus a charmonium(-like) state, i.e., ψ(3770), ψ(4040), ψ(4160), ψ(4230), ψ(4360), ψ(4415) or ψ(4660). No significant charmonium(-like) state decaying into Ξ...

P2X7 a new therapeutic target to block vesicle-dependent metastasis in colon carcinoma: Role of the A2A/CD39/CD73 axis

Extracellular vesicle-driven cancer metastasis represents a therapeutic challenge due to the lack of effective blocking drugs. Our study shows that activation of the P2X7 receptor on colon carcinoma cells causes the release of vesicles carrying CD39 and CD73 ectonucleotidases. These vesicles increase ATP and adenosine levels and, when in vivo administered, significantly enhance colon carcinoma metastasis and circulating levels of vesicles after fourteen days from their injection. Blocking P2X...

Noncanonical NF-κB signaling in dendritic cells is required for ATP-driven indoleamine 2,3-dioxygenase 1 induction through P2Y11 receptor

Extracellular ATP released from dying cells, including tumor cells, is a key mediator of inflammation and tolerance by binding to purinergic receptors on dendritic cells (DCs), resulting in inflammasome activation (via P2X7R), DC maturation (via P2Y11R), and indoleamine-2,3-dioxygenase 1 upregulation. However, the regulation of ATP-driven Indoleamine-2,3-dioxygenase 1 expression in human DCs has been poorly investigated. In this work, we aimed to investigate the ATP-driven molecular regulatio...

Study of the decay J/ψ →φπ0η

Based on (10.09±0.04)×109 J/ψ events collected with the BESIII detector operating at the BEPCII collider, a partial wave analysis of the decay J/ψ→φπ0η is performed. We observe for the first time two new structures on the φη invariant mass distribution, with significances exceeding 27σ and 13σ; the first with JPC=1+-, mass M=(1908±6(stat) -4+8(sys)) MeV/c2, and width Γ=(175±13(stat) -16+7(sys)) MeV, the second with JPC=1 - , mass M=(1992±12(stat) -6+15(sys)) MeV/c2, and width Γ=(132±22(stat) ...

Observation of χcJ →p p ¯ KS0 K-π++ c. c.

By analyzing (27.12±0.14)×108 ψ(3686) events collected with the BESIII detector operating at the BEPCII collider, the decays χcJ→pp¯KS0K-π++c.c. (J=0,1,2) are observed for the first time with statistical significances greater than 10σ. The branching fractions of these decays are determined to be B(χc0→pp¯KS0K-π++c.c.)=(2.61±0.27±0.32)×10-5, B(χc1→pp¯KS0K-π++c.c.)=(4.16±0.24±0.46)×10-5, and B(χc2→pp¯KS0K-π++c.c.)=(5.63±0.28±0.46)×10-5, respectively. The processes χc1,2→p¯Λ(1520)KS0π++c.c. are ...

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Autore
  • CALABRESE, Roberto1402
  • LUPPI, Eleonora1349
  • GARZIA, Isabella793
  • FIORINI, Massimiliano779
  • GAMBARI, Roberto766
  • PAPPALARDO, Luciano Libero764
  • TOMASSETTI, Luca741
  • GUIDI, Vincenzo707
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