Decay X(3872)→π0π+π− and S-wave D0¯D0→π+π− scattering length Full article
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Physical Review D: Particles and fields
ISSN: 2470-0010 , E-ISSN: 2470-0029 |
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| Output data | Year: 2019, Volume: 99, Number: 11, Pages: 116023 Pages count : 1 DOI: 10.1103/physrevd.99.116023 | ||
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Abstract:
The isospin-breaking decay X(3872)→(D∗¯D+¯D∗D)→π0D¯D→π0π+π− is discussed. In its amplitude there is a triangle logarithmic singularity, due to which the dominant contribution to BR(X(3872)→π0π+π−) comes from the production of the π+π− system in a narrow interval of the invariant mass mπ+π− near the value of 2mD0≈3.73 GeV. The analysis shows that BR(X(3872)→π0π+π−) can be expected at the level of 10−3−10−4. This estimate includes, in particular, the assumption that the S-wave inelastic scattering length |α′′D0¯D0→π+π−|≈1/(2mD*+)≈0.25 GeV−1.
Cite:
Achasov N. .
, Shestakov G. .
Decay X(3872)→π0π+π− and S-wave D0¯D0→π+π− scattering length
Physical Review D: Particles and fields. 2019. V.99. N11. P.116023. DOI: 10.1103/physrevd.99.116023 WOS Scopus OpenAlex
Decay X(3872)→π0π+π− and S-wave D0¯D0→π+π− scattering length
Physical Review D: Particles and fields. 2019. V.99. N11. P.116023. DOI: 10.1103/physrevd.99.116023 WOS Scopus OpenAlex
Identifiers:
| Web of science: | WOS:000473026500003 |
| Scopus: | 2-s2.0-85069684591 |
| OpenAlex: | W2935395596 |