Observation of
Abstract
We report the first observation of the decays B0→p$$\bar{Λ}$$D(*)-. The data sample of 711 fb-1 used in this analysis corresponds to 772 million $$B$$$\bar{B}$$ pairs, collected at the Υ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe 19.8σ and 10.8σ excesses of events for the two decay modes and measure the branching fractions of B0→p$$\bar{Λ}$$D- and B0→p$$\bar{Λ}$$D(*)- to be (25.1±2.6±3.5)×10-6 and (33.6±6.3±4.4)×10-6, respectively, where the first uncertainties are statistical and the second are systematic. These results are not compatible with the predictions based on the generalized factorization approach. In addition, a threshold enhancement in the di-baryon (p$$\bar{Λ}$$) system is observed, consistent with that observed in similar B decays.
- Authors:
- more »
- Publication Date:
- Research Org.:
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- Belle Collaboration
- OSTI Identifier:
- 1594406
- Alternate Identifier(s):
- OSTI ID: 1227088
- Report Number(s):
- PNNL-SA-115105
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US2101614
- Grant/Contract Number:
- SC0009973; AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 115; Journal Issue: 22; 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
Citation Formats
Chang, Y. -Y., Wang, M. -Z., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Barberio, E., Bhuyan, B., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Dutta, D., Eidelman, S., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Gillard, R., Glattauer, R., Goh, Y. M., Goldenzweig, P., Greenwald, D., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., He, X. H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Joffe, D., Joo, K. K., Kawasaki, T., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, Y. J., Kinoshita, K., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lai, Y. -T., Lee, I. S., Li, L., Li, Y., Libby, J., Liventsev, D., Lukin, P., Masuda, M., Matvienko, D., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, S., Moll, A., Moon, H. K., Mori, T., Nakano, E., Nakao, M., Nanut, T., Nayak, M., Nishida, S., Ogawa, S., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. W., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Rauch, J., Ribežl, E., Ritter, M., Rostomyan, A., Ryu, S., Sahoo, H., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seong, I. S., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Sohn, Y. -S., Starič, M., Stypula, J., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Tamponi, U., Tanida, K., Teramoto, Y., Uglov, T., Unno, Y., Uno, S., Usov, Y., Van Hulse, C., Vanhoefer, P., Varner, G., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, C. H., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yamaoka, J., Yashchenko, S., Yelton, J., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Observation of B0→pΛ¯D(*)-. United States: N. p., 2015.
Web. doi:10.1103/PhysRevLett.115.221803.
Chang, Y. -Y., Wang, M. -Z., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Barberio, E., Bhuyan, B., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Dutta, D., Eidelman, S., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Gillard, R., Glattauer, R., Goh, Y. M., Goldenzweig, P., Greenwald, D., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., He, X. H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Joffe, D., Joo, K. K., Kawasaki, T., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, Y. J., Kinoshita, K., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lai, Y. -T., Lee, I. S., Li, L., Li, Y., Libby, J., Liventsev, D., Lukin, P., Masuda, M., Matvienko, D., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, S., Moll, A., Moon, H. K., Mori, T., Nakano, E., Nakao, M., Nanut, T., Nayak, M., Nishida, S., Ogawa, S., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. W., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Rauch, J., Ribežl, E., Ritter, M., Rostomyan, A., Ryu, S., Sahoo, H., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seong, I. S., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Sohn, Y. -S., Starič, M., Stypula, J., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Tamponi, U., Tanida, K., Teramoto, Y., Uglov, T., Unno, Y., Uno, S., Usov, Y., Van Hulse, C., Vanhoefer, P., Varner, G., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, C. H., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yamaoka, J., Yashchenko, S., Yelton, J., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., & Zupanc, A. Observation of B0→pΛ¯D(*)-. United States. https://doi.org/10.1103/PhysRevLett.115.221803
Chang, Y. -Y., Wang, M. -Z., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Barberio, E., Bhuyan, B., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Dutta, D., Eidelman, S., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Gillard, R., Glattauer, R., Goh, Y. M., Goldenzweig, P., Greenwald, D., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., He, X. H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Joffe, D., Joo, K. K., Kawasaki, T., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, Y. J., Kinoshita, K., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lai, Y. -T., Lee, I. S., Li, L., Li, Y., Libby, J., Liventsev, D., Lukin, P., Masuda, M., Matvienko, D., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, S., Moll, A., Moon, H. K., Mori, T., Nakano, E., Nakao, M., Nanut, T., Nayak, M., Nishida, S., Ogawa, S., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. W., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Rauch, J., Ribežl, E., Ritter, M., Rostomyan, A., Ryu, S., Sahoo, H., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seong, I. S., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Sohn, Y. -S., Starič, M., Stypula, J., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Tamponi, U., Tanida, K., Teramoto, Y., Uglov, T., Unno, Y., Uno, S., Usov, Y., Van Hulse, C., Vanhoefer, P., Varner, G., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, C. H., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yamaoka, J., Yashchenko, S., Yelton, J., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Tue .
"Observation of B0→pΛ¯D(*)-". United States. https://doi.org/10.1103/PhysRevLett.115.221803. https://www.osti.gov/servlets/purl/1594406.
@article{osti_1594406,
title = {Observation of B0→pΛ¯D(*)-},
author = {Chang, Y. -Y. and Wang, M. -Z. and Abdesselam, A. and Adachi, I. and Adamczyk, K. and Aihara, H. and Al Said, S. and Asner, D. M. and Atmacan, H. and Aushev, T. and Babu, V. and Badhrees, I. and Bakich, A. M. and Barberio, E. and Bhuyan, B. and Biswal, J. and Bobrov, A. and Bozek, A. and Bračko, M. and Browder, T. E. and Červenkov, D. and Chekelian, V. and Chen, A. and Cheon, B. G. and Chilikin, K. and Chistov, R. and Chobanova, V. and Choi, S. -K. and Choi, Y. and Cinabro, D. and Dalseno, J. and Danilov, M. and Dingfelder, J. and Doležal, Z. and Drásal, Z. and Dutta, D. and Eidelman, S. and Farhat, H. and Fast, J. E. and Ferber, T. and Fulsom, B. G. and Gaur, V. and Gabyshev, N. and Ganguly, S. and Garmash, A. and Gillard, R. and Glattauer, R. and Goh, Y. M. and Goldenzweig, P. and Greenwald, D. and Grzymkowska, O. and Haba, J. and Hayasaka, K. and Hayashii, H. and He, X. H. and Hou, W. -S. and Hsu, C. -L. and Iijima, T. and Inami, K. and Ishikawa, A. and Itoh, R. and Iwasaki, Y. and Jacobs, W. W. and Jaegle, I. and Joffe, D. and Joo, K. K. and Kawasaki, T. and Kim, D. Y. and Kim, H. J. and Kim, J. B. and Kim, J. H. and Kim, K. T. and Kim, M. J. and Kim, S. H. and Kim, Y. J. and Kinoshita, K. and Korpar, S. and Križan, P. and Krokovny, P. and Kuhr, T. and Kumita, T. and Kuzmin, A. and Kwon, Y. -J. and Lai, Y. -T. and Lee, I. S. and Li, L. and Li, Y. and Libby, J. and Liventsev, D. and Lukin, P. and Masuda, M. and Matvienko, D. and Miyabayashi, K. and Miyake, H. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Mohanty, S. and Moll, A. and Moon, H. K. and Mori, T. and Nakano, E. and Nakao, M. and Nanut, T. and Nayak, M. and Nishida, S. and Ogawa, S. and Ozaki, H. and Pakhlov, P. and Pakhlova, G. and Pal, B. and Park, C. W. and Pedlar, T. K. and Pestotnik, R. and Petrič, M. and Piilonen, L. E. and Rauch, J. and Ribežl, E. and Ritter, M. and Rostomyan, A. and Ryu, S. and Sahoo, H. and Sakai, Y. and Sandilya, S. and Santelj, L. and Sanuki, T. and Savinov, V. and Schneider, O. and Schnell, G. and Schwanda, C. and Seino, Y. and Senyo, K. and Seong, I. S. and Sevior, M. E. and Shebalin, V. and Shen, C. P. and Shibata, T. -A. and Shiu, J. -G. and Simon, F. and Sohn, Y. -S. and Starič, M. and Stypula, J. and Sumihama, M. and Sumisawa, K. and Sumiyoshi, T. and Tamponi, U. and Tanida, K. and Teramoto, Y. and Uglov, T. and Unno, Y. and Uno, S. and Usov, Y. and Van Hulse, C. and Vanhoefer, P. and Varner, G. and Vorobyev, V. and Vossen, A. and Wagner, M. N. and Wang, C. H. and Wang, P. and Watanabe, M. and Watanabe, Y. and Williams, K. M. and Won, E. and Yamaoka, J. and Yashchenko, S. and Yelton, J. and Yusa, Y. and Zhang, Z. P. and Zhilich, V. and Zhulanov, V. and Zupanc, A.},
abstractNote = {We report the first observation of the decays B0→p$\bar{Λ}$D(*)-. The data sample of 711 fb-1 used in this analysis corresponds to 772 million $B$$\bar{B}$ pairs, collected at the Υ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe 19.8σ and 10.8σ excesses of events for the two decay modes and measure the branching fractions of B0→p$\bar{Λ}$D- and B0→p$\bar{Λ}$D(*)- to be (25.1±2.6±3.5)×10-6 and (33.6±6.3±4.4)×10-6, respectively, where the first uncertainties are statistical and the second are systematic. These results are not compatible with the predictions based on the generalized factorization approach. In addition, a threshold enhancement in the di-baryon (p$\bar{Λ}$) system is observed, consistent with that observed in similar B decays.},
doi = {10.1103/PhysRevLett.115.221803},
journal = {Physical Review Letters},
number = 22,
volume = 115,
place = {United States},
year = {Tue Nov 24 00:00:00 EST 2015},
month = {Tue Nov 24 00:00:00 EST 2015}
}
Web of Science
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