BESIII experiment found that new particles X (2600)

Recently, the Beijing spectrometer BESIII Experimental International Cooperation Group used the 10 billion J/ψ experimental data that has been collected. For the first time, the new particles X (2600) were observed. The experimental results were published online on July 19, 2022. Above [PHYS. Rev. Lett. 129 (2022) 042001].

This time, the BESIII cooperation team is in

The new particle X (2600) observed in the process, the experiment confirmed that its statistics were significantly greater than 20 times the standard deviation, and measured the two main decay modes of X (2600)

and

Production. This result is to find another new important achievement in the field of new strong sub -state. In the next step, find X (2600) particles in more decay and determine its self -spin, which is essential for understanding the essence of X (2600) particles.

The strong son that has been discovered in nature consists of 2 or 3 quarks, and quantum color dynamics (QCD) allows the existence of new types of strong children such as Polymal, mixed state, and glue balls. Therefore, it is found that the Duquan, mixed -state and glue balls are found in experiments. It is of great significance for testing and development of QCD and the theoretical model of Johito. It has always been one of the most important physical goals in many high -energy physical experiments in the world. In recent years, the QCD theory has made tremendous progress, providing an important theoretical basis for experimental research Jienon genealogy and the new strong sub -state beyond the quark model, and predicted that the quality range of the base state bids measuring the glue ball is 2.3–2.6 GEV /C^2.

BESIII experiments can generate a large amount of puppet particles with positive and negative electron colliders. Among them, the radiation decay of J/ψ is recognized as an ideal place to find a new type of light and strong sub -state, especially the glue ball. At present, the particles that have been confirmed in the experiment are very rare than 2GEV. In 2012, the BESIII experiment was observed in J/ψ radiation decay for the first time observed the resonance state X (2370), which is consistent with the quality of the bidding of the QCD prediction of QCD. Through more experimental data, further explore the internal structure of the particles, and more widely find new particles above the possible 2.0Gev, narrowing is of great significance for the blind zone of the particle that is greater than 2GEV.

At present, the BESIII experiment has changed in J/ψ

A series of new particle states were observed on the quality spectrum, including the X (1835) and the new X (2120), X (2370) and X (2600) found in the confirmation of BESII. These experiments have provided an important experimental basis and research window for in -depth understanding of Qiangzi spectrum.

references:

PRL online publishing article link:

https://journals.Aps.org/prl/abstract/10.1103/physrevlett.129.0420011

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