Three-body decay of Λc*(2765) and determination of its spin-parity

被引：13

作者：

Arifi, A. J. ^{[1
,2
]}

Nagahiro, H. ^{[1
,3
]}

Hosaka, A. ^{[1
,2
]}

Tanida, K. ^{[2
]}

机构：

[1] Osaka Univ, Res Ctr Nucl Phys RCNP, Ibaraki, Osaka 5670047, Japan

[2] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Nara Womens Univ, Dept Phys, Nara 6308506, Japan

来源：

PHYSICAL REVIEW D | 2020年 / 101卷 / 09期

关键词：

HEAVY BARYONS; QUARK-MODEL; STATES; MASSES;

D O I：

10.1103/PhysRevD.101.094023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study three-body decays of Lambda(c)*(2765) -> Lambda(+)(c)pi(+)pi(-) by using effective Lagrangians in a nonrelativistic framework. We consider the sequential decays through Sigma(c)(2455)pi and Sigma(c)*(2520)pi in intermediate states which are dominant contributions. The coupling constants in the effective Lagrangians are computed in the quark model. We demonstrate that the ratio R = Gamma(Lambda(c)* -> Sigma(c)*(2520)pi)/Gamma(Lambda(c)* -> Sigma(c)(2455)pi) and angular correlations are sensitive to the spin and parity of Lambda(c)*(2765). Thus, the measurement of these observables in experimental facilities such as Belle and LHCb can provide useful constraints to determine the spin and parity of Lambda(c)*(2765).

引用

页数：17

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