Observation of Λc+→Λa0(980)+ and Evidence for Σ(1380)+ in Λc+→Λπ+η - 成果

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Observation of $Λ_{c}^{+} \to Λ a_{0} (980)^{+}$ and Evidence for $Σ (1380)^{+}$ in $Λ_{c}^{+} \to Λ π^{+} η$

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作者信息关键词期刊信息基础信息归属信息摘要

成果类型：

期刊论文

作者：

Ablikim, M;Achasov, M N;Adlarson, P;Afedulidis, O;Ai, X C;...

作者机构：

Institute of High Energy Physics, Beijing 100049, People's Republic of China

[Achasov, M N; Muchnoi, N Yu; Nikolaev, I B] Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia

[Adlarson, P; Johansson, T; Schoenning, K; Thoren, V; Wolke, M] Uppsala University, Box 516, SE-75120 Uppsala, Sweden

[Afedulidis, O; de Boer, R E; Feldbauer, F; Fritsch, M; Hanisch, F; Heinsius, F H; Ma, T; Hölzken, F; Kopf, B; Kuessner, M; Pelizaeus, M; Wiedner, U; Wollenberg, L] Bochum Ruhr-University, D-44780 Bochum, Germany

Zhengzhou University, Zhengzhou 450001, People's Republic of China

语种：

英文

期刊：

PHYSICAL REVIEW LETTERS

ISSN：

0031-9007

年：

2025

卷：

134

期：

页码：

021901

DOI：

10.1103/PhysRevLett.134.021901

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本校为其他机构

摘要：

Based on 6.1 fb − 1 of e + e − annihilation data collected at center-of-mass energies from 4.600 to 4.843 GeV with the BESIII detector at the BEPCII collider, a partial wave analysis of Λ c + → Λ π + η is performed, and branching fractions and decay asymmetry parameters of intermediate processes are determined. The process Λ c + → Λ a 0 ( 980 ) + is observed for the first time, and evidence for the pentaquark candidate Σ ( 1380 ) + decaying into Λ π + is found with statistical significance larger than 3 σ with mass and width fixed...

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Observation of $Λ_{c}^{+} \to Λ a_{0} (980)^{+}$ and Evidence for $Σ (1380)^{+}$ in $Λ_{c}^{+} \to Λ π^{+} η$

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