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• W3111495943 abstract "Abstract We study the $$tau rightarrow nu _tau A$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>τ</mml:mi><mml:mo>→</mml:mo><mml:msub><mml:mi>ν</mml:mi><mml:mi>τ</mml:mi></mml:msub><mml:mi>A</mml:mi></mml:mrow></mml:math> decay, with A an axial-vector meson. We produce the $$a_1(1260)$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>a</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mn>1260</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> and $$b_1(1235)$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>b</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mn>1235</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> resonances in the Cabibbo favored mode and two $$K_1(1270)$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>K</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mn>1270</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> states in the Cabibbo suppressed mode. We take advantage of previous chiral unitary approach results where these resonances appear dynamically from the vector and pseudoscalar meson interaction in s-wave. Actually two different poles were obtained associated to the $$K_1(1270)$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>K</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mn>1270</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> quantum numbers. We find that the unmeasured rates for $$b_1(1235)$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>b</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mn>1235</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> production are similar to those of the $$a_1(1260)$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>a</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mn>1260</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> and for the two $$K_1$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mi>K</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math> states we suggest to separate the present information on the $$bar{K} pi pi $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mover><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>¯</mml:mo></mml:mrow></mml:mover><mml:mi>π</mml:mi><mml:mi>π</mml:mi></mml:mrow></mml:math> invariant masses into $$bar{K}^* pi $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msup><mml:mrow><mml:mover><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>¯</mml:mo></mml:mrow></mml:mover></mml:mrow><mml:mo>∗</mml:mo></mml:msup><mml:mi>π</mml:mi></mml:mrow></mml:math> and $$rho K$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>ρ</mml:mi><mml:mi>K</mml:mi></mml:mrow></mml:math> modes, the channels to which these two resonances couple most strongly, predicting that these modes peak at different energies and have different widths. These measurements should shed light on the existence of these two $$K_1$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mi>K</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math> states. In addition, we have gone one step further making a comparison with experimental results of three meson decay channels, letting the vector mesons of our approach decay into pseudoscalars, and we find an overall good agreement with experiment." @default.
• W3111495943 created "2020-12-21" @default.
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• W3111495943 date "2020-07-01" @default.
• W3111495943 modified "2023-09-27" @default.
• W3111495943 title "Tau decay into $$nu _tau $$ and $$a_1(1260)$$, $$b_1(1235)$$, and two $$K_1(1270)$$" @default.
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