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Title: Measurement of the branching ratio of B ¯ 0 D * + τ - ν ¯ τ relative to B ¯ 0 D * + - ν ¯ decays with a semileptonic tagging method

Abstract

We report a measurement of the ratio R(D*)=B($$\bar{B}$$0→D*+τ-$$\bar{v}$$$$\bar{τ}$$)/B($$\bar{B}$$0→D*+-$$\bar{v}$$ℓ), where ℓ denotes an electron or a muon. The results are based on a data sample containing 772×106 B$$\bar{B}$$ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. We select a sample of B0$$\bar{B}$$0 pairs by reconstructing both B mesons in semileptonic decays to D*±. We measure R(D*)=0.302±0.030(stat)±0.011(syst), which is within 1.6σ of the Standard Model theoretical expectation, where the standard deviation σ includes systematic uncertainties. We use this measurement to constrain several scenarios of new physics in a model-independent approach.

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Belle Collaboration
OSTI Identifier:
1336005
Report Number(s):
PNNL-SA-120352
Journal ID: ISSN 2470-0010; PRVDAQ; KA2201020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 94; Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Bell II; Belle Collaboration

Citation Formats

Sato, Y., Iijima, T., Adamczyk, K., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Bhardwaj, V., Bhuyan, B., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Danilov, M., Dash, N., Di Carlo, S., Doležal, Z., Dutta, D., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Golob, B., Greenwald, D., Hara, K., Hara, T., Hasenbusch, J., Hayasaka, K., Hayashii, H., Hirose, S., Horiguchi, T., Hou, W. -S., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, I., Jeon, H. B., Joffe, D., Julius, T., Kang, K. H., Kato, Y., Katrenko, P., Kawasaki, T., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, M. J., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Krokovny, P., Kuhr, T., Kumar, R., Kwon, Y. -J., Lange, J. S., Li, C. H., Li, L., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Moon, H. K., Nakamura, K. R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Negishi, K., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Olsen, S. L., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. -S., Paul, S., Pedlar, T. K., Pesántez, L., Pestotnik, R., Petrič, M., Piilonen, L. E., Purohit, M. V., Rauch, J., Rostomyan, A., Rozanska, M., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Simon, F., Solovieva, E., Stanič, S., Starič, M., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tenchini, F., Trabelsi, K., Uchida, M., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Van Hulse, C., Varner, G., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, Y., Williams, K. M., Won, E., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A. Measurement of the branching ratio of B¯0→D*+τ-ν¯τ relative to B¯0→D*+ℓ-ν¯ℓ decays with a semileptonic tagging method. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.94.072007.
Sato, Y., Iijima, T., Adamczyk, K., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Bhardwaj, V., Bhuyan, B., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Danilov, M., Dash, N., Di Carlo, S., Doležal, Z., Dutta, D., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Golob, B., Greenwald, D., Hara, K., Hara, T., Hasenbusch, J., Hayasaka, K., Hayashii, H., Hirose, S., Horiguchi, T., Hou, W. -S., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, I., Jeon, H. B., Joffe, D., Julius, T., Kang, K. H., Kato, Y., Katrenko, P., Kawasaki, T., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, M. J., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Krokovny, P., Kuhr, T., Kumar, R., Kwon, Y. -J., Lange, J. S., Li, C. H., Li, L., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Moon, H. K., Nakamura, K. R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Negishi, K., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Olsen, S. L., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. -S., Paul, S., Pedlar, T. K., Pesántez, L., Pestotnik, R., Petrič, M., Piilonen, L. E., Purohit, M. V., Rauch, J., Rostomyan, A., Rozanska, M., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Simon, F., Solovieva, E., Stanič, S., Starič, M., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tenchini, F., Trabelsi, K., Uchida, M., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Van Hulse, C., Varner, G., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, Y., Williams, K. M., Won, E., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., & Zupanc, A. Measurement of the branching ratio of B¯0→D*+τ-ν¯τ relative to B¯0→D*+ℓ-ν¯ℓ decays with a semileptonic tagging method. United States. https://doi.org/10.1103/PhysRevD.94.072007
Sato, Y., Iijima, T., Adamczyk, K., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Bhardwaj, V., Bhuyan, B., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Danilov, M., Dash, N., Di Carlo, S., Doležal, Z., Dutta, D., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Golob, B., Greenwald, D., Hara, K., Hara, T., Hasenbusch, J., Hayasaka, K., Hayashii, H., Hirose, S., Horiguchi, T., Hou, W. -S., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, I., Jeon, H. B., Joffe, D., Julius, T., Kang, K. H., Kato, Y., Katrenko, P., Kawasaki, T., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, M. J., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Krokovny, P., Kuhr, T., Kumar, R., Kwon, Y. -J., Lange, J. S., Li, C. H., Li, L., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Moon, H. K., Nakamura, K. R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Negishi, K., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Olsen, S. L., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. -S., Paul, S., Pedlar, T. K., Pesántez, L., Pestotnik, R., Petrič, M., Piilonen, L. E., Purohit, M. V., Rauch, J., Rostomyan, A., Rozanska, M., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Simon, F., Solovieva, E., Stanič, S., Starič, M., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tenchini, F., Trabelsi, K., Uchida, M., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Van Hulse, C., Varner, G., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, Y., Williams, K. M., Won, E., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A. 2016. "Measurement of the branching ratio of B¯0→D*+τ-ν¯τ relative to B¯0→D*+ℓ-ν¯ℓ decays with a semileptonic tagging method". United States. https://doi.org/10.1103/PhysRevD.94.072007.
@article{osti_1336005,
title = {Measurement of the branching ratio of B¯0→D*+τ-ν¯τ relative to B¯0→D*+ℓ-ν¯ℓ decays with a semileptonic tagging method},
author = {Sato, Y. and Iijima, T. and Adamczyk, K. and Aihara, H. and Asner, D. M. and Atmacan, H. and Aushev, T. and Ayad, R. and Aziz, T. and Babu, V. and Badhrees, I. and Bakich, A. M. and Bansal, V. and Behera, P. and Bhardwaj, V. and Bhuyan, B. and Biswal, J. and Bonvicini, G. and Bozek, A. and Bračko, M. and Červenkov, D. and Chang, P. and Chekelian, V. and Chen, A. and Cheon, B. G. and Chilikin, K. and Chistov, R. and Cho, K. and Chobanova, V. and Choi, Y. and Cinabro, D. and Danilov, M. and Dash, N. and Di Carlo, S. and Doležal, Z. and Dutta, D. and Eidelman, S. and Epifanov, D. and Farhat, H. and Fast, J. E. and Ferber, T. and Fulsom, B. G. and Gaur, V. and Gabyshev, N. and Garmash, A. and Goldenzweig, P. and Golob, B. and Greenwald, D. and Hara, K. and Hara, T. and Hasenbusch, J. and Hayasaka, K. and Hayashii, H. and Hirose, S. and Horiguchi, T. and Hou, W. -S. and Inami, K. and Ishikawa, A. and Itoh, R. and Iwasaki, Y. and Jaegle, I. and Jeon, H. B. and Joffe, D. and Julius, T. and Kang, K. H. and Kato, Y. and Katrenko, P. and Kawasaki, T. and Kim, D. Y. and Kim, J. B. and Kim, K. T. and Kim, M. J. and Kim, S. H. and Kim, Y. J. and Kinoshita, K. and Kodyš, P. and Korpar, S. and Kotchetkov, D. and Krokovny, P. and Kuhr, T. and Kumar, R. and Kwon, Y. -J. and Lange, J. S. and Li, C. H. and Li, L. and Li, Y. and Li Gioi, L. and Libby, J. and Liventsev, D. and Luo, T. and Masuda, M. and Matsuda, T. and Matvienko, D. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Moll, A. and Moon, H. K. and Nakamura, K. R. and Nakano, E. and Nakao, M. and Nanut, T. and Nath, K. J. and Natkaniec, Z. and Nayak, M. and Negishi, K. and Nisar, N. K. and Nishida, S. and Ogawa, S. and Okuno, S. and Olsen, S. L. and Onuki, Y. and Pakhlov, P. and Pakhlova, G. and Pal, B. and Park, C. -S. and Paul, S. and Pedlar, T. K. and Pesántez, L. and Pestotnik, R. and Petrič, M. and Piilonen, L. E. and Purohit, M. V. and Rauch, J. and Rostomyan, A. and Rozanska, M. and Sakai, Y. and Sandilya, S. and Santelj, L. and Savinov, V. and Schlüter, T. and Schneider, O. and Schnell, G. and Schwanda, C. and Schwartz, A. J. and Seino, Y. and Senyo, K. and Seon, O. and Sevior, M. E. and Shebalin, V. and Shen, C. P. and Shibata, T. -A. and Shiu, J. -G. and Shwartz, B. and Simon, F. and Solovieva, E. and Stanič, S. and Starič, M. and Strube, J. F. and Sumiyoshi, T. and Takizawa, M. and Tamponi, U. and Tenchini, F. and Trabelsi, K. and Uchida, M. and Uno, S. and Urquijo, P. and Ushiroda, Y. and Usov, Y. and Van Hulse, C. and Varner, G. and Vinokurova, A. and Vorobyev, V. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Watanabe, Y. and Williams, K. M. and Won, E. and Yamamoto, H. and Yamaoka, J. and Yamashita, Y. and Yelton, J. and Yook, Y. and Yuan, C. Z. and Yusa, Y. and Zhang, Z. P. and Zhilich, V. and Zhukova, V. and Zhulanov, V. and Zupanc, A.},
abstractNote = {We report a measurement of the ratio R(D*)=B($\bar{B}$0→D*+τ-$\bar{v}$$\bar{τ}$)/B($\bar{B}$0→D*+ℓ-$\bar{v}$ℓ), where ℓ denotes an electron or a muon. The results are based on a data sample containing 772×106 B$\bar{B}$ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. We select a sample of B0$\bar{B}$0 pairs by reconstructing both B mesons in semileptonic decays to D*∓ℓ±. We measure R(D*)=0.302±0.030(stat)±0.011(syst), which is within 1.6σ of the Standard Model theoretical expectation, where the standard deviation σ includes systematic uncertainties. We use this measurement to constrain several scenarios of new physics in a model-independent approach.},
doi = {10.1103/PhysRevD.94.072007},
url = {https://www.osti.gov/biblio/1336005}, journal = {Physical Review D},
issn = {2470-0010},
number = 7,
volume = 94,
place = {United States},
year = {2016},
month = {10}
}

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