Canonical interpretation of the newly observed <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>J</mml:mi><mml:mi>P</mml:mi></mml:msup><mml:mo>=</mml:mo><mml:msup><mml:mn>1</mml:mn><mml:mo>+</mml:mo></mml:ms

Inspired by the newly observed <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>X</a:mi><a:mo stretchy="false">(</a:mo><a:mn>2085</a:mn><a:mo stretchy="false">)</a:mo></a:math> by the BESIII Collaboration, we study the strong decay behaviors of excited axial-vector strange mesons within the quark pair creation model. Our results indicate that the <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:msub><e:mi>K</e:mi><e:mn>1</e:mn></e:msub><e:mo stretchy="false">(</e:mo><e:mn>1793</e:mn><e:mo stretchy="false">)</e:mo><e:mo>/</e:mo><e:msub><e:mi>K</e:mi><e:mn>1</e:mn></e:msub><e:mo stretchy="false">(</e:mo><e:mn>1861</e:mn><e:mo stretchy="false">)</e:mo></e:math> can be regarded as the same <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:msub><k:mi>K</k:mi><k:mn>1</k:mn></k:msub><k:mo stretchy="false">(</k:mo><k:mn>2</k:mn><k:mi>P</k:mi><k:mo stretchy="false">)</k:mo></k:math> state, and the <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:msub><o:mi>K</o:mi><o:mn>1</o:mn></o:msub><o:mo stretchy="false">(</o:mo><o:mn>1911</o:mn><o:mo stretchy="false">)</o:mo></o:math> is assigned as the <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"><s:msub><s:mi>K</s:mi><s:mn>1</s:mn></s:msub><s:mo stretchy="false">(</s:mo><s:mn>2</s:mn><s:msup><s:mi>P</s:mi><s:mo>′</s:mo></s:msup><s:mo stretchy="false">)</s:mo></s:math> state. Considering the mass, spin-parity, and decay behaviors, we interpret the newly observed <w:math xmlns:w="http://www.w3.org/1998/Math/MathML" display="inline"><w:mi>X</w:mi><w:mo stretchy="false">(</w:mo><w:mn>2085</w:mn><w:mo stretchy="false">)</w:mo></w:math> as the radially excited <ab:math xmlns:ab="http://www.w3.org/1998/Math/MathML" display="inline"><ab:msub><ab:mi>K</ab:mi><ab:mn>1</ab:mn></ab:msub><ab:mo stretchy="false">(</ab:mo><ab:mn>3</ab:mn><ab:mi>P</ab:mi><ab:mo stretchy="false">)</ab:mo></ab:math> state, which mainly decays into the <eb:math xmlns:eb="http://www.w3.org/1998/Math/MathML" display="inline"><eb:msup><eb:mi>K</eb:mi><eb:mo>*</eb:mo></eb:msup><eb:mo stretchy="false">(</eb:mo><eb:mn>1410</eb:mn><eb:mo stretchy="false">)</eb:mo><eb:mi>π</eb:mi></eb:math>, <ib:math xmlns:ib="http://www.w3.org/1998/Math/MathML" display="inline"><ib:mi>ρ</ib:mi><ib:msup><ib:mi>K</ib:mi><ib:mo>*</ib:mo></ib:msup></ib:math>, <kb:math xmlns:kb="http://www.w3.org/1998/Math/MathML" display="inline"><kb:mi>ω</kb:mi><kb:mo stretchy="false">(</kb:mo><kb:mn>1420</kb:mn><kb:mo stretchy="false">)</kb:mo><kb:mi>K</kb:mi></kb:math>, <ob:math xmlns:ob="http://www.w3.org/1998/Math/MathML" display="inline"><ob:mi>ρ</ob:mi><ob:mo stretchy="false">(</ob:mo><ob:mn>1450</ob:mn><ob:mo stretchy="false">)</ob:mo><ob:mi>K</ob:mi></ob:math>, and <sb:math xmlns:sb="http://www.w3.org/1998/Math/MathML" display="inline"><sb:mi>ρ</sb:mi><sb:mi>K</sb:mi></sb:math> final states. Also, the width of the <ub:math xmlns:ub="http://www.w3.org/1998/Math/MathML" display="inline"><ub:msub><ub:mi>K</ub:mi><ub:mn>1</ub:mn></ub:msub><ub:mo stretchy="false">(</ub:mo><ub:mn>3</ub:mn><ub:msup><ub:mi>P</ub:mi><ub:mo>′</ub:mo></ub:msup><ub:mo stretchy="false">)</ub:mo></ub:math> state is predicted to be about 300 MeV, which can be searched for by future experiments. We expect that present calculations can help us to better understand the nature of the <yb:math xmlns:yb="http://www.w3.org/1998/Math/MathML" display="inline"><yb:mi>X</yb:mi><yb:mo stretchy="false">(</yb:mo><yb:mn>2085</yb:mn><yb:mo stretchy="false">)</yb:mo></yb:math> structure and near-threshold enhancements in the baryon-antibaryon invariant mass distributions. Published by the American Physical Society 2024