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Title: First Measurements of Absolute Branching Fractions of the Ξ c 0 Baryon at Belle

Abstract

We present the first measurements of absolute branching fractions of $${\mathrm{{\Xi}}}_{c}^{0}$$ decays into $${\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}$$, $$\mathrm{{\Lambda}}{K}^{{-}}{{\pi}}^{+}$$, and $$p{K}^{{-}}{K}^{{-}}{{\pi}}^{+}$$ final states. The measurements are made using a dataset comprising $$(772\pm{}11)\times{}{10}^{6}$$ $$B\overline{B}$$ pairs collected at the $$\mathrm{{\Upsilon}}(4S)$$ resonance with the Belle detector at the KEKB $${e}^{+}{e}^{{-}}$$ collider. We first measure the absolute branching fraction for $${B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0}$$ using a missing-mass technique; the result is $$\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})=(9.51\pm{}2.10\pm{}0.88)\times{}{10}^{{-}4}$$. We subsequently measure the product branching fractions $$\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+})$$, $$\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}\mathrm{{\Lambda}}{K}^{{-}}{{\pi}}^{+})$$, and $$\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}p{K}^{{-}}{K}^{{-}}{{\pi}}^{+})$$ with improved precision. Dividing these product branching fractions by the result for $${B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0}$$ yields the following branching fractions: $$\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+})=(1.80\pm{}0.50\pm{}0.14)%$$, $$\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}\mathrm{{\Lambda}}{K}^{{-}}{{\pi}}^{+})=(1.17\pm{}0.37\pm{}0.09)%$$, and $$\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}p{K}^{{-}}{K}^{{-}}{{\pi}}^{+})=(0.58\pm{}0.23\pm{}0.05)%$$. For the above branching fractions, the first uncertainties are statistical and the second are systematic. Our result for $$\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+})$$ can be combined with $${\mathrm{{\Xi}}}_{c}^{0}$$ branching fractions measured relative to $${\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}$$ to yield other absolute $${\mathrm{{\Xi}}}_{c}^{0}$$ branching fractions.

Authors:
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Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
Belle Collaboration
OSTI Identifier:
1496509
Alternate Identifier(s):
OSTI ID: 1501557
Report Number(s):
BNL-211390-2019-JAAM
Journal ID: ISSN 0031-9007
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 8; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; branching fraction; hadronic decays

Citation Formats

Li, Y. B., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Badhrees, I., Ban, Y., Bansal, V., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bondar, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Grube, B., Hayasaka, K., Hayashii, H., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Karyan, G., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, J. Y., Lee, S. C., Li, L. K., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nishida, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, S. -H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.. First Measurements of Absolute Branching Fractions of the Ξc0 Baryon at Belle. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.082001.
Li, Y. B., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Badhrees, I., Ban, Y., Bansal, V., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bondar, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Grube, B., Hayasaka, K., Hayashii, H., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Karyan, G., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, J. Y., Lee, S. C., Li, L. K., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nishida, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, S. -H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., & Zhukova, V.. First Measurements of Absolute Branching Fractions of the Ξc0 Baryon at Belle. United States. doi:10.1103/PhysRevLett.122.082001.
Li, Y. B., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Badhrees, I., Ban, Y., Bansal, V., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bondar, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Grube, B., Hayasaka, K., Hayashii, H., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Karyan, G., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, J. Y., Lee, S. C., Li, L. K., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nishida, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, S. -H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.. Mon . "First Measurements of Absolute Branching Fractions of the Ξc0 Baryon at Belle". United States. doi:10.1103/PhysRevLett.122.082001.
@article{osti_1496509,
title = {First Measurements of Absolute Branching Fractions of the Ξc0 Baryon at Belle},
author = {Li, Y. B. and Shen, C. P. and Yuan, C. Z. and Adachi, I. and Aihara, H. and Al Said, S. and Asner, D. M. and Aushev, T. and Ayad, R. and Badhrees, I. and Ban, Y. and Bansal, V. and Beleño, C. and Berger, M. and Bhardwaj, V. and Bhuyan, B. and Bilka, T. and Biswal, J. and Bondar, A. and Bozek, A. and Bračko, M. and Cao, L. and Červenkov, D. and Chen, A. and Cheon, B. G. and Chilikin, K. and Cho, K. and Choi, S. -K. and Choi, Y. and Cinabro, D. and Cunliffe, S. and Di Carlo, S. and Doležal, Z. and Dong, T. V. and Drásal, Z. and Eidelman, S. and Fast, J. E. and Fulsom, B. G. and Garg, R. and Gaur, V. and Gabyshev, N. and Garmash, A. and Giri, A. and Goldenzweig, P. and Greenwald, D. and Grube, B. and Hayasaka, K. and Hayashii, H. and Hsu, C. -L. and Iijima, T. and Inami, K. and Inguglia, G. and Ishikawa, A. and Itoh, R. and Iwasaki, M. and Iwasaki, Y. and Jacobs, W. W. and Jia, S. and Jin, Y. and Joffe, D. and Joo, K. K. and Karyan, G. and Kawasaki, T. and Kichimi, H. and Kim, D. Y. and Kim, H. J. and Kim, J. B. and Kim, K. T. and Kim, S. H. and Kinoshita, K. and Kodyš, P. and Korpar, S. and Kotchetkov, D. and Križan, P. and Kroeger, R. and Krokovny, P. and Kumita, T. and Kuzmin, A. and Kwon, Y. -J. and Lee, J. Y. and Lee, S. C. and Li, L. K. and Li Gioi, L. and Libby, J. and Liventsev, D. and Lubej, M. and MacNaughton, J. and Masuda, M. and Matsuda, T. and Merola, M. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Mussa, R. and Nakano, E. and Nakao, M. and Nath, K. J. and Nayak, M. and Niiyama, M. and Nishida, S. and Ono, H. and Onuki, Y. and Pakhlov, P. and Pakhlova, G. and Pal, B. and Pardi, S. and Park, S. -H. and Paul, S. and Pedlar, T. K. and Pestotnik, R. and Piilonen, L. E. and Popov, V. and Prencipe, E. and Russo, G. and Sakai, Y. and Salehi, M. and Sandilya, S. and Santelj, L. and Sanuki, T. and Savinov, V. and Schneider, O. and Schnell, G. and Schueler, J. and Schwanda, C. and Schwartz, A. J. and Seino, Y. and Senyo, K. and Sevior, M. E. and Shibata, T. -A. and Shiu, J. -G. and Shwartz, B. and Solovieva, E. and Starič, M. and Sumihama, M. and Sumiyoshi, T. and Sutcliffe, W. and Takizawa, M. and Tanida, K. and Tao, Y. and Tenchini, F. and Trabelsi, K. and Uchida, M. and Uglov, T. and Unno, Y. and Uno, S. and Urquijo, P. and Van Tonder, R. and Varner, G. and Wang, B. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Wang, X. L. and Won, E. and Yang, S. B. and Ye, H. and Yelton, J. and Yin, J. H. and Yusa, Y. and Zhang, Z. P. and Zhilich, V. and Zhukova, V.},
abstractNote = {We present the first measurements of absolute branching fractions of ${\mathrm{{\Xi}}}_{c}^{0}$ decays into ${\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}$, $\mathrm{{\Lambda}}{K}^{{-}}{{\pi}}^{+}$, and $p{K}^{{-}}{K}^{{-}}{{\pi}}^{+}$ final states. The measurements are made using a dataset comprising $(772\pm{}11)\times{}{10}^{6}$ $B\overline{B}$ pairs collected at the $\mathrm{{\Upsilon}}(4S)$ resonance with the Belle detector at the KEKB ${e}^{+}{e}^{{-}}$ collider. We first measure the absolute branching fraction for ${B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0}$ using a missing-mass technique; the result is $\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})=(9.51\pm{}2.10\pm{}0.88)\times{}{10}^{{-}4}$. We subsequently measure the product branching fractions $\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+})$, $\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}\mathrm{{\Lambda}}{K}^{{-}}{{\pi}}^{+})$, and $\mathcal{B}({B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0})\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}p{K}^{{-}}{K}^{{-}}{{\pi}}^{+})$ with improved precision. Dividing these product branching fractions by the result for ${B}^{{-}}{\rightarrow}{\overline{\mathrm{{\Lambda}}}}_{c}^{{-}}{\mathrm{{\Xi}}}_{c}^{0}$ yields the following branching fractions: $\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+})=(1.80\pm{}0.50\pm{}0.14)%$, $\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}\mathrm{{\Lambda}}{K}^{{-}}{{\pi}}^{+})=(1.17\pm{}0.37\pm{}0.09)%$, and $\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}p{K}^{{-}}{K}^{{-}}{{\pi}}^{+})=(0.58\pm{}0.23\pm{}0.05)%$. For the above branching fractions, the first uncertainties are statistical and the second are systematic. Our result for $\mathcal{B}({\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+})$ can be combined with ${\mathrm{{\Xi}}}_{c}^{0}$ branching fractions measured relative to ${\mathrm{{\Xi}}}_{c}^{0}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}$ to yield other absolute ${\mathrm{{\Xi}}}_{c}^{0}$ branching fractions.},
doi = {10.1103/PhysRevLett.122.082001},
journal = {Physical Review Letters},
number = 8,
volume = 122,
place = {United States},
year = {2019},
month = {2}
}

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DOI: 10.1103/PhysRevLett.122.082001

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