3 years ago

X(16.7) Production in Electron-Position Collision.

Yi Liang, Long-Bin Chen, Jun Jiang, Cong-Feng Qiao

The anomaly found in the excited $^8\text{Be}$ nuclear transition to its ground state is attributed to a spin-1 gauge boson $X(16.7)$. To hunt for this boson, we propose two traps: $e^+e^-\to X\gamma$ and $J/\psi\to X\gamma$, both following with $X\to e^+e^-$ decay. We adopt the "vector minus axial-vector" interaction hypothesis. Analysis on the $X(16.7)$ decay length, production rates, differential distribution with respect to the $e^+e^-$ invariant-mass spectrum, and the signal-to-noise ratios (SNR) after the smearing at BESIII are discussed in detail. Given the coupling strength between $X$ and fermions $g_f^{v/a}\sim10^{-3}$ at BESIII: (1) there would be about $\sim6000$ $X$ measurable events per year in electron-positron collision, yet with a large background after smearing; (2) while in $J/\psi$ decays, we find that the axial-vector current may come into play; though merely 52 events may appear, the SNR are inspiring even after smearing

Publisher URL: http://arxiv.org/abs/1607.03970

DOI: arXiv:1607.03970v3

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.