Interference phenomena in the decay 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:mi>η</mml:mi><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:

It is shown that the recent data on the K 0 S K + correlation in Pb-Pb interactions agree with the data on the γγ → ηπ 0 and φ → ηπ 0 γ reactions and support the four-quark model of the a 0 (980) meson. It is shown that the data does not contradict the validity of the Gaussian assumption.The study of two-kaon correlations could provide more information about light scalar mesons after increasing the accuracy of the experimental and theoretical descriptions. PACS numbers: 12.39.-x 13.40.Hq 13.66.Bc

show abstract

“…The Flatté propagator is not adequate for studying f 0 (980) and a 0 (980); see Refs. [10,14,[33][34][35]. As in Ref.…”

Section: Formalism and Resultsmentioning

confidence: 99%

Light scalar mesons and two-kaon correlation functions

Achasov

Киселев

2018

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

show abstract

“…1. Nonetheless, if D + s → a 0 π proceeds through the WA cs → W + → ud decay, the Gparities of ud and a 0 π are odd and even, respectively [8,9], such that a 0 π formed from ud violates G-parity conservation, indicating the suppressed WA process for D + s → a 0 π . The same WA processes can also be applied to the D + section, being barely allowed by the current data.…”

Section: Introductionmentioning

confidence: 99%

Resonant $$a_0(980)$$ state in triangle rescattering $$D_s^+\rightarrow \pi ^+\pi ^0\eta $$ decays

Hsiao

2020

Eur. Phys. J. C

View full text Add to dashboard Cite

We study the $$D_s^+\rightarrow \pi ^+(a_0(980)^0\rightarrow )\pi ^0\eta $$ D s + → π + ( a 0 ( 980 ) 0 → ) π 0 η , $$\pi ^0(a_0(980)^+\rightarrow )\pi ^+\eta $$ π 0 ( a 0 ( 980 ) + → ) π + η decays, which have been recently measured by the BESIII collaboration. We propose that $$D_s^+\rightarrow \pi ^{+(0)}(a_0(980)^{0(+)}\rightarrow )\pi ^{0(+)}\eta $$ D s + → π + ( 0 ) ( a 0 ( 980 ) 0 ( + ) → ) π 0 ( + ) η receives the contributions from the triangle rescattering processes, where $$M^0$$ M 0 and $$\rho ^+$$ ρ + in $$D_s^+\rightarrow M^0 \rho ^+$$ D s + → M 0 ρ + , by exchanging $$\pi ^{0(+)}$$ π 0 ( + ) , are formed as $$a_0(980)^{0(+)}$$ a 0 ( 980 ) 0 ( + ) and $$\pi ^{+(0)}$$ π + ( 0 ) , respectively, with $$M^0=(\eta ,\eta ')$$ M 0 = ( η , η ′ ) . Accordingly, we calculate that $$\mathcal{B}(D_s^+\rightarrow a_0(980)^{0(+)}\pi ^{+(0)})= (1.7\pm 0.2\pm 0.1)\times 10^{-2}$$ B ( D s + → a 0 ( 980 ) 0 ( + ) π + ( 0 ) ) = ( 1.7 ± 0.2 ± 0.1 ) × 10 - 2 and $$\mathcal{B}(D_s^+\rightarrow \pi ^{+(0)}(a_0(980)^{0(+)}\rightarrow )\pi ^{0(+)}\eta ) =(1.4\pm 0.1\pm 0.1)\times 10^{-2}$$ B ( D s + → π + ( 0 ) ( a 0 ( 980 ) 0 ( + ) → ) π 0 ( + ) η ) = ( 1.4 ± 0.1 ± 0.1 ) × 10 - 2 , being consistent with the data.

show abstract

“…violates G-parity [9,11], such that its branching fraction is expected as small as B(D + s → π + π 0 ). Nonetheless, one measures that B(D + s → a [7,12].…”

Section: The D +mentioning

confidence: 99%

Study of the $D_s^+\to a_0(980) ρ$ and $a_0(980) ω$ decays

Yu,

Hsiao,

2021

Preprint

View full text Add to dashboard Cite

show abstract

Interference phenomena in the decay Ds+→ηπ0π+

Cited by 17 publications

References 24 publications

Light scalar mesons and two-kaon correlation functions

Light scalar mesons and two-kaon correlation functions

Resonant $$a_0(980)$$ state in triangle rescattering $$D_s^+\rightarrow \pi ^+\pi ^0\eta $$ decays

Study of the $D_s^+\to a_0(980) ρ$ and $a_0(980) ω$ decays

Contact Info

Product

Resources

About