Measurement of branching fractions of , , , and
Abstract
We report branching fraction measurements of four decay modes of the $$Λ$$$^{c}_{+}$$ baryon, each of which includes an η meson and a Λ baryon in the final state, and all of which are measured relative to the $$Λ$$$^{c}_{+}$$ → pK–π+ decay mode. The results are based on a 980 fb–1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e– collider. Two decays, $$Λ$$$^{c}_{+}$$ → ηΣ0π+ and Λ(1670)π+, are observed for the first time, while the measurements of the other decay modes, $$Λ$$$^{c}_{+}$$ → ηΛπ+ and ηΣ(1385)+, are more precise than those made previously. We obtain B($$Λ$$$^{c}_{+}$$ → ηΛπ+)/B($$Λ$$$^{c}_{+}$$ → pK–π+) = 0.293 ± 0.003 ± 0.014, B($$Λ$$$^{c}_{+}$$ → ηΣ0π+)/B($$Λ$$$^{c}_{+}$$ → pK–π+) = 0.120 ± 0.006 ± 0.006, B($$Λ$$$^{c}_{+}$$ → Λ(1670)π+) × B(Λ(1670) → ηΛ)/B($$Λ$$$^{c}_{+}$$ → pK–π+) = (5.54 ± 0.29 ± 0.73) × 10–2, and B($$Λ$$$^{c}_{+}$$ → ηΣ(1385)+)/B($$Λ$$$^{c}_{+}$$ → pK–π+) = 0.192 ± 0.006 ± 0.016. The mass and width of the Λ(1670) are also precisely determined to be 1674.3 ± 0.8 ± 4.9 MeV/c2 and 36.1 ± 2.4 ± 4.8 MeV, respectively, where the uncertainties are statistical and systematic, respectively.
- Authors:
-
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- Publication Date:
- Research Org.:
- Univ. of Hawaii, Honolulu, HI (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
- Contributing Org.:
- Belle Collaboration
- OSTI Identifier:
- 2325269
- Alternate Identifier(s):
- OSTI ID: 1779741; OSTI ID: 1798470
- Report Number(s):
- BNL-221690-2021-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 052005
- Grant/Contract Number:
- SC0010504; SC0012704
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. D.
- Additional Journal Information:
- Journal Name: Physical Review. D. Journal Volume: 103 Journal Issue: 5; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Branching fraction; Hadronic decays; Charmed baryons; Hyperons; Mass; Lepton colliders; Particle decays; Precision measurements; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Citation Formats
Lee, J. Y., Tanida, K., Kato, Y., Kim, S. K., Yang, S. B., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hernandez Villanueva, M., Hsu, C. -L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, Y. J., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Nakano, T., Nakao, M., Natochii, A., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Xu, X., Yabsley, B. D., Yan, W., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Belle Collaboration. Measurement of branching fractions of Λ c + → η Λ π + , η Σ 0 π + , Λ ( 1670 ) π + , and η Σ ( 1385 ) +. United States: N. p., 2021.
Web. doi:10.1103/PhysRevD.103.052005.
Lee, J. Y., Tanida, K., Kato, Y., Kim, S. K., Yang, S. B., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hernandez Villanueva, M., Hsu, C. -L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, Y. J., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Nakano, T., Nakao, M., Natochii, A., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Xu, X., Yabsley, B. D., Yan, W., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., & Belle Collaboration. Measurement of branching fractions of Λ c + → η Λ π + , η Σ 0 π + , Λ ( 1670 ) π + , and η Σ ( 1385 ) +. United States. https://doi.org/10.1103/PhysRevD.103.052005
Lee, J. Y., Tanida, K., Kato, Y., Kim, S. K., Yang, S. B., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hernandez Villanueva, M., Hsu, C. -L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, Y. J., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Nakano, T., Nakao, M., Natochii, A., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Xu, X., Yabsley, B. D., Yan, W., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Belle Collaboration. Mon .
"Measurement of branching fractions of Λ c + → η Λ π + , η Σ 0 π + , Λ ( 1670 ) π + , and η Σ ( 1385 ) +". United States. https://doi.org/10.1103/PhysRevD.103.052005.
@article{osti_2325269,
title = {Measurement of branching fractions of Λ c + → η Λ π + , η Σ 0 π + , Λ ( 1670 ) π + , and η Σ ( 1385 ) +},
author = {Lee, J. Y. and Tanida, K. and Kato, Y. and Kim, S. K. and Yang, S. B. and Adachi, I. and Ahn, J. K. and Aihara, H. and Al Said, S. and Asner, D. M. and Aushev, T. and Ayad, R. and Babu, V. and Bahinipati, S. and Behera, P. and Beleño, C. and Bennett, J. and Bessner, M. and Bhuyan, B. and Bilka, T. and Biswal, J. and Bonvicini, G. and Bozek, A. and Bračko, M. and Browder, T. E. and Campajola, M. and Cao, L. and Červenkov, D. and Chang, M. -C. and Chang, P. and Chekelian, V. and Chen, A. and Cheon, B. G. and Chilikin, K. and Cho, K. and Choi, S. -K. and Choi, Y. and Choudhury, S. and Cinabro, D. and Cunliffe, S. and De Nardo, G. and Di Capua, F. and Doležal, Z. and Dong, T. V. and Eidelman, S. and Epifanov, D. and Ferber, T. and Fulsom, B. G. and Garg, R. and Gaur, V. and Garmash, A. and Giri, A. and Goldenzweig, P. and Golob, B. and Hadjivasiliou, C. and Hartbrich, O. and Hayasaka, K. and Hayashii, H. and Hedges, M. T. and Hernandez Villanueva, M. and Hsu, C. -L. and Inami, K. and Ishikawa, A. and Itoh, R. and Iwasaki, M. and Jacobs, W. W. and Jang, E. -J. and Jia, S. and Jin, Y. and Joo, C. W. and Joo, K. K. and Kang, K. H. and Karyan, G. and Kichimi, H. and Kiesling, C. and Kim, B. H. and Kim, D. Y. and Kim, K. -H. and Kim, K. T. and Kim, S. H. and Kim, Y. J. and Kim, Y. -K. and Kinoshita, K. and Kodyš, P. and Korpar, S. and Kotchetkov, D. and Križan, P. and Kroeger, R. and Krokovny, P. and Kuhr, T. and Kulasiri, R. and Kumara, K. and Kuzmin, A. and Kwon, Y. -J. and Lee, S. C. and Li, C. H. and Li, L. K. and Li, Y. B. and Li Gioi, L. and Libby, J. and Lieret, K. and Liptak, Z. and Liventsev, D. and Luo, T. and MacQueen, C. and Masuda, M. and Matsuda, T. and Matvienko, D. and Merola, M. and Miyabayashi, K. and Mizuk, R. and Mohanty, G. B. and Moon, T. J. and Mori, T. and Mussa, R. and Nakano, T. and Nakao, M. and Natochii, A. and Nayak, M. and Niiyama, M. and Nisar, N. K. and Nishida, S. and Ogawa, K. and Ogawa, S. and Olsen, S. L. and Ono, H. and Onuki, Y. and Oskin, P. and Pakhlov, P. and Pakhlova, G. and Pardi, S. and Park, S. -H. and Patra, S. and Paul, S. and Pedlar, T. K. and Pestotnik, R. and Piilonen, L. E. and Podobnik, T. and Popov, V. and Prencipe, E. and Prim, M. T. and Rostomyan, A. and Rout, N. and Russo, G. and Sahoo, D. and Sakai, Y. and Sandilya, S. and Sangal, A. and Santelj, L. and Savinov, V. and Schnell, G. and Schueler, J. and Schwanda, C. and Schwartz, A. J. and Seidl, R. and Seino, Y. and Senyo, K. and Sevior, M. E. and Shapkin, M. and Shebalin, V. and Shiu, J. -G. and Shwartz, B. and Sokolov, A. and Solovieva, E. and Stanič, S. and Starič, M. and Stottler, Z. S. and Sumihama, M. and Sumiyoshi, T. and Sutcliffe, W. and Takizawa, M. and Tamponi, U. and Tenchini, F. and Uchida, M. and Uglov, T. and Uno, S. and Usov, Y. and Vahsen, S. E. and Van Tonder, R. and Varner, G. and Vinokurova, A. and Vorobyev, V. and Vossen, A. and Wang, C. H. and Wang, E. and Wang, M. -Z. and Wang, P. and Watanabe, M. and Watanuki, S. and Wehle, S. and Wiechczynski, J. and Xu, X. and Yabsley, B. D. and Yan, W. and Ye, H. and Yelton, J. and Yin, J. H. and Yuan, C. Z. and Yusa, Y. and Zhang, Z. P. and Zhilich, V. and Zhukova, V. and Zhulanov, V. and Belle Collaboration},
abstractNote = {We report branching fraction measurements of four decay modes of the $Λ$$^{c}_{+}$ baryon, each of which includes an η meson and a Λ baryon in the final state, and all of which are measured relative to the $Λ$$^{c}_{+}$ → pK–π+ decay mode. The results are based on a 980 fb–1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e– collider. Two decays, $Λ$$^{c}_{+}$ → ηΣ0π+ and Λ(1670)π+, are observed for the first time, while the measurements of the other decay modes, $Λ$$^{c}_{+}$ → ηΛπ+ and ηΣ(1385)+, are more precise than those made previously. We obtain B($Λ$$^{c}_{+}$ → ηΛπ+)/B($Λ$$^{c}_{+}$ → pK–π+) = 0.293 ± 0.003 ± 0.014, B($Λ$$^{c}_{+}$ → ηΣ0π+)/B($Λ$$^{c}_{+}$ → pK–π+) = 0.120 ± 0.006 ± 0.006, B($Λ$$^{c}_{+}$ → Λ(1670)π+) × B(Λ(1670) → ηΛ)/B($Λ$$^{c}_{+}$ → pK–π+) = (5.54 ± 0.29 ± 0.73) × 10–2, and B($Λ$$^{c}_{+}$ → ηΣ(1385)+)/B($Λ$$^{c}_{+}$ → pK–π+) = 0.192 ± 0.006 ± 0.016. The mass and width of the Λ(1670) are also precisely determined to be 1674.3 ± 0.8 ± 4.9 MeV/c2 and 36.1 ± 2.4 ± 4.8 MeV, respectively, where the uncertainties are statistical and systematic, respectively.},
doi = {10.1103/PhysRevD.103.052005},
journal = {Physical Review. D.},
number = 5,
volume = 103,
place = {United States},
year = {Mon Mar 15 00:00:00 EDT 2021},
month = {Mon Mar 15 00:00:00 EDT 2021}
}
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