English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

This Letter presents a search for a hidden-beauty counterpart of the$X(3872)$ in the mass ranges 10.05--10.31 GeV and 10.40--11.00 GeV, in thechannel $X_b \to \pi^{+} \pi^{-} \Upsilon(1 \rm S)(\rightarrow\mu^+\mu^-)$,using 16.2 fb$^{-1}$ of $\sqrt{s}=8$ TeV $pp$ collision data collected by theATLAS detector at the LHC. No evidence for new narrow states is found, andupper limits are set on the product of the $X_b$ cross section and branchingfraction, relative to those of the $\Upsilon(2 \rm S)$, at the 95% confidencelevel using the CL$_S$ approach. These limits range from 0.8% to 4.0%,depending on mass. For masses above 10.1 GeV, the expected upper limits fromthis analysis are the most restrictive to date. Searches for production of the$\Upsilon(1^3 \rm{D}$$_J)$, $\Upsilon(10860)$, and $\Upsilon(11020)$ statesalso reveal no significant signals.

Search for the $X_b$ and other hidden-beauty states in the $\pi^+ \pi^- \Upsilon(1 \rm S)$ channel at ATLAS