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Measurement of the absolute branching fraction of the inclusive decay $\bar{\Lambda}_{c}^{-} \to \bar{n} + X$
Measurement of the absolute branching fraction of the inclusive decay $\bar{\Lambda}_{c}^{-} \to \bar{n} + X$
Based on $e^+e^-$ collision data corresponding to an integrated luminosity of 4.5 $fb^{-1}$ collected at the center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII, the absolute branching fraction of the inclusive decay $\Lambda^{+}_{c}\to n + X$, where $X$ refers to any possible final state particles, is measured. The absolute branching fraction is determined to be $\mathcal{B}(\Lambda^{+}_{c}\to n + X) = (32.4 \pm 0.7 \pm 1.5)\% $, where the first uncertainty is statistical and the second systematic. Assuming $CP$ symmetry, the measurement indicates that about one-fourth of $\Lambda^{+}_{c}$ ($\bar{\Lambda}_{c}^-$) decay modes with a neutron (an anti-neutron) in the final state have not been observed.
Comment: 8 pages, 2 figures
High Energy Physics - Experiment
High Energy Physics - Experiment
2213
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Z. H. Zhang1, Z. Y. Zhang39, Z. Y. Zhang71, G. Zhao1, J. Zhao35, J. Y. Zhao1;58, J. Z. Zhao1;53, Lei Zhao66;53, Ling Zhao1,
M. G. Zhao39, S. J. Zhao75, Y. B. Zhao1;53, Y. X. Zhao28;58, Z. G. Zhao66;53, A. Zhemchugov32;a, B. Zheng67, J. P. Zheng1;53,
Y. H. Zheng58, B. Zhong37, C. Zhong67, X. Zhong54, H. Zhou45, L. P. Zhou1;58, X. Zhou71, X. K. Zhou58, X. R. Zhou66;53,
X. Y. Zhou35, Y. Z. Zhou10;f , J. Zhu39, K. Zhu1, K. J. Zhu1;53;58, L. X. Zhu58, S. H. Zhu65, S. Q. Zhu38, T. J. Zhu72,
Sezione di Perugia, I-06100, Perugia, Italy; (C)University of Perugia, I-06100, Perugia, Italy 27 INFN Sezione di Ferrara, (A)INFN Sezione di Ferrara, I-44122, Ferrara, Italy; (B)University of Ferrara, I-44122, Ferrara,
University, Nicosia, North Cyprus, Mersin 10, Turkey 58 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 59 University of Groningen, NL-9747 AA Groningen, The Netherlands 60 University of Hawaii, Honolulu, Hawaii 96822, USA 61 University of Jinan, Jinan 250022, People's Republic of China 62 University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom 63 University of Muenster, Wilhelm-Klemm-Strasse 9, 48149 Muenster, Germany 64 University of Oxford, Keble Road, Oxford OX13RH, United Kingdom 65 University of Science and Technology Liaoning, Anshan 114051, People's Republic of China 66 University of Science and Technology of China, Hefei 230026, People's Republic of China 67 University of South China, Hengyang 421001, People's Republic of China 68 University of the Punjab, Lahore-54590, Pakistan 69 University of Turin and INFN, (A)University of Turin, I-10125, Turin, Italy; (B)University of Eastern Piedmont, I-15121,
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citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).0 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Average influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Average citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).0 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Average influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Average
Citations provided by BIP!Popularity provided by BIP!Based on $e^+e^-$ collision data corresponding to an integrated luminosity of 4.5 $fb^{-1}$ collected at the center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII, the absolute branching fraction of the inclusive decay $\Lambda^{+}_{c}\to n + X$, where $X$ refers to any possible final state particles, is measured. The absolute branching fraction is determined to be $\mathcal{B}(\Lambda^{+}_{c}\to n + X) = (32.4 \pm 0.7 \pm 1.5)\% $, where the first uncertainty is statistical and the second systematic. Assuming $CP$ symmetry, the measurement indicates that about one-fourth of $\Lambda^{+}_{c}$ ($\bar{\Lambda}_{c}^-$) decay modes with a neutron (an anti-neutron) in the final state have not been observed.
Comment: 8 pages, 2 figures