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Title: Study of exclusive B X u ν decays and extraction of | V u b | using full reconstruction tagging at the Belle experiment

Abstract

Here, we report the results of a study of the exclusive semileptonic decays B - π 0 - ν ¯ , B ¯ 0 π + - ν ¯ , B - ρ 0 - ν ¯ , B ¯ 0 ρ + - ν ¯ and B - ω - ν ¯ , where represents an electron or a muon. The events are tagged by fully reconstructing a second B meson in the event in a hadronic decay mode. The measured branching fractions are B ( B - π 0 - ν ¯ ) = ( 0.80 ± 0.08 ± 0.04 ) × 10 - 4 , B ( B ¯ 0 π + - ν ¯ ) = ( 1.49 ± 0.09 ± 0.07 ) × 10 - 4 , B ( B - ρ 0 - ν ¯ ) = ( 1.83 ± 0.10 ± 0.10 ) × 10 - 4 , B ( B ¯ 0 ρ + - ν ¯ ) = ( 3.22 ± 0.27 ± 0.24 ) × 10 - 4 , and B ( B - ω - ν ¯ ) = ( 1.07 ± 0.16 ± 0.07 ) × 10 - 4 , where the first error is statistical and the second one is systematic. The obtained branching fractions are inclusive of soft photon emission. Furthermore, we determine the branching fractions as a function of the 4-momentum transfer squared to the leptonic system q 2 = ( p + p ν ) 2 , where p and p ν are the lepton and neutrino 4-momenta, respectively. Using the pion modes, a recent light cone sum rule calculation, lattice QCD results and a model-independent description of the hadronic form factor, a value of the Cabibbo-Kobayashi-Maskawa matrix element | V u b | = ( 3.52 ± 0.29 ) × 10 - 3 is extracted. A structure in the two-pion invariant mass distribution near 1.3 GeV / c 2 , which might be dominated by the decay B - f 2 ( 1270 ) - ν ¯ , f 2 π + π - , is seen. These results are obtained from a 711 fb - 1 data sample that contains 772 × 10 6 B B ¯ pairs, collected near the Υ ( 4 S ) resonance with the Belle detector at the KEKB asymmetric-energy e + e - collider.

Authors:
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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); National Natural Science Foundation of China (NNSFC)
Contributing Org.:
Belle Collaboration
OSTI Identifier:
1594532
Grant/Contract Number:  
SC0009973
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 88; Journal Issue: 3; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Sibidanov, A., Varvell, K. E., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Bakich, A. M., Bala, A., Bozek, A., Bračko, M., Browder, T. E., Chekelian, V., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, I. -S., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Ferber, T., Frey, A., Gaur, V., Ganguly, S., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayashii, H., Hoshi, Y., Hou, W. -S., Hyun, H. J., Iijima, T., Ishikawa, A., Itoh, R., Iwasaki, Y., Julius, T., Kah, D. H., Kang, J. H., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, Y. J., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, Y., Liventsev, D., Lukin, P., Matvienko, D., Miyabayashi, K., Miyata, H., Mohanty, G. B., Moll, A., Mussa, R., Nagasaka, Y., Nakano, E., Nakao, M., Natkaniec, Z., Nayak, M., Nedelkovska, E., Ng, C., Nisar, N. K., Nishida, S., Nitoh, O., Nozaki, T., Ogawa, S., Okuno, S., Olsen, S. L., Oswald, C., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Rostomyan, A., Ryu, S., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Smerkol, P., Sohn, Y. -S., Solovieva, E., Stanič, S., Starič, M., Steder, M., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Tatishvili, G., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Vorobyev, V., Wagner, M. N., Wang, C. H., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yabsley, B. D., Yamashita, Y., Yashchenko, S., Yook, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Study of exclusive B→Xuℓν decays and extraction of |Vub| using full reconstruction tagging at the Belle experiment. United States: N. p., 2013. Web. doi:10.1103/PhysRevD.88.032005.
Sibidanov, A., Varvell, K. E., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Bakich, A. M., Bala, A., Bozek, A., Bračko, M., Browder, T. E., Chekelian, V., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, I. -S., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Ferber, T., Frey, A., Gaur, V., Ganguly, S., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayashii, H., Hoshi, Y., Hou, W. -S., Hyun, H. J., Iijima, T., Ishikawa, A., Itoh, R., Iwasaki, Y., Julius, T., Kah, D. H., Kang, J. H., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, Y. J., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, Y., Liventsev, D., Lukin, P., Matvienko, D., Miyabayashi, K., Miyata, H., Mohanty, G. B., Moll, A., Mussa, R., Nagasaka, Y., Nakano, E., Nakao, M., Natkaniec, Z., Nayak, M., Nedelkovska, E., Ng, C., Nisar, N. K., Nishida, S., Nitoh, O., Nozaki, T., Ogawa, S., Okuno, S., Olsen, S. L., Oswald, C., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Rostomyan, A., Ryu, S., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Smerkol, P., Sohn, Y. -S., Solovieva, E., Stanič, S., Starič, M., Steder, M., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Tatishvili, G., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Vorobyev, V., Wagner, M. N., Wang, C. H., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yabsley, B. D., Yamashita, Y., Yashchenko, S., Yook, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., & Zupanc, A. Study of exclusive B→Xuℓν decays and extraction of |Vub| using full reconstruction tagging at the Belle experiment. United States. doi:10.1103/PhysRevD.88.032005.
Sibidanov, A., Varvell, K. E., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Bakich, A. M., Bala, A., Bozek, A., Bračko, M., Browder, T. E., Chekelian, V., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, I. -S., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Ferber, T., Frey, A., Gaur, V., Ganguly, S., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayashii, H., Hoshi, Y., Hou, W. -S., Hyun, H. J., Iijima, T., Ishikawa, A., Itoh, R., Iwasaki, Y., Julius, T., Kah, D. H., Kang, J. H., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, Y. J., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, Y., Liventsev, D., Lukin, P., Matvienko, D., Miyabayashi, K., Miyata, H., Mohanty, G. B., Moll, A., Mussa, R., Nagasaka, Y., Nakano, E., Nakao, M., Natkaniec, Z., Nayak, M., Nedelkovska, E., Ng, C., Nisar, N. K., Nishida, S., Nitoh, O., Nozaki, T., Ogawa, S., Okuno, S., Olsen, S. L., Oswald, C., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Rostomyan, A., Ryu, S., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Smerkol, P., Sohn, Y. -S., Solovieva, E., Stanič, S., Starič, M., Steder, M., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Tatishvili, G., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Vorobyev, V., Wagner, M. N., Wang, C. H., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yabsley, B. D., Yamashita, Y., Yashchenko, S., Yook, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Wed . "Study of exclusive B→Xuℓν decays and extraction of |Vub| using full reconstruction tagging at the Belle experiment". United States. doi:10.1103/PhysRevD.88.032005. https://www.osti.gov/servlets/purl/1594532.
@article{osti_1594532,
title = {Study of exclusive B→Xuℓν decays and extraction of |Vub| using full reconstruction tagging at the Belle experiment},
author = {Sibidanov, A. and Varvell, K. E. and Adachi, I. and Aihara, H. and Asner, D. M. and Aulchenko, V. and Aushev, T. and Bakich, A. M. and Bala, A. and Bozek, A. and Bračko, M. and Browder, T. E. and Chekelian, V. and Chen, P. and Cheon, B. G. and Chilikin, K. and Chistov, R. and Cho, I. -S. and Cho, K. and Chobanova, V. and Choi, Y. and Cinabro, D. and Dalseno, J. and Danilov, M. and Dingfelder, J. and Doležal, Z. and Drásal, Z. and Drutskoy, A. and Dutta, D. and Eidelman, S. and Epifanov, D. and Farhat, H. and Fast, J. E. and Ferber, T. and Frey, A. and Gaur, V. and Ganguly, S. and Gillard, R. and Goh, Y. M. and Golob, B. and Haba, J. and Hayashii, H. and Hoshi, Y. and Hou, W. -S. and Hyun, H. J. and Iijima, T. and Ishikawa, A. and Itoh, R. and Iwasaki, Y. and Julius, T. and Kah, D. H. and Kang, J. H. and Kawasaki, T. and Kiesling, C. and Kim, D. Y. and Kim, H. J. and Kim, J. B. and Kim, J. H. and Kim, K. T. and Kim, Y. J. and Klucar, J. and Ko, B. R. and Kodyš, P. and Korpar, S. and Križan, P. and Krokovny, P. and Kronenbitter, B. and Kuhr, T. and Kuzmin, A. and Kwon, Y. -J. and Lee, S. -H. and Li, J. and Li, Y. and Libby, J. and Liu, Y. and Liventsev, D. and Lukin, P. and Matvienko, D. and Miyabayashi, K. and Miyata, H. and Mohanty, G. B. and Moll, A. and Mussa, R. and Nagasaka, Y. and Nakano, E. and Nakao, M. and Natkaniec, Z. and Nayak, M. and Nedelkovska, E. and Ng, C. and Nisar, N. K. and Nishida, S. and Nitoh, O. and Nozaki, T. and Ogawa, S. and Okuno, S. and Olsen, S. L. and Oswald, C. and Park, H. and Park, H. K. and Pedlar, T. K. and Pestotnik, R. and Petrič, M. and Piilonen, L. E. and Ritter, M. and Röhrken, M. and Rostomyan, A. and Ryu, S. and Sahoo, H. and Saito, T. and Sakai, Y. and Sandilya, S. and Santelj, L. and Sanuki, T. and Sato, Y. and Savinov, V. and Schneider, O. and Schnell, G. and Schwanda, C. and Senyo, K. and Seon, O. and Sevior, M. E. and Shapkin, M. and Shebalin, V. and Shen, C. P. and Shibata, T. -A. and Shiu, J. -G. and Simon, F. and Smerkol, P. and Sohn, Y. -S. and Solovieva, E. and Stanič, S. and Starič, M. and Steder, M. and Sumihama, M. and Sumisawa, K. and Sumiyoshi, T. and Tatishvili, G. and Teramoto, Y. and Trabelsi, K. and Tsuboyama, T. and Uchida, M. and Uehara, S. and Uglov, T. and Unno, Y. and Uno, S. and Urquijo, P. and Ushiroda, Y. and Vahsen, S. E. and Van Hulse, C. and Vanhoefer, P. and Varner, G. and Vorobyev, V. 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 Yabsley, B. D. and Yamashita, Y. and Yashchenko, S. and Yook, Y. and Zhang, Z. P. and Zhilich, V. and Zhulanov, V. and Zupanc, A.},
abstractNote = {Here, we report the results of a study of the exclusive semileptonic decays B-→π0ℓ-ν¯ℓ, B¯0→π+ℓ-ν¯ℓ, B-→ρ0ℓ-ν¯ℓ, B¯0→ρ+ℓ-ν¯ℓ and B-→ωℓ-ν¯ℓ, where ℓ represents an electron or a muon. The events are tagged by fully reconstructing a second B meson in the event in a hadronic decay mode. The measured branching fractions are B(B-→π0ℓ-ν¯ℓ)=(0.80±0.08±0.04)×10-4, B(B¯0→π+ℓ-ν¯ℓ)=(1.49±0.09±0.07)×10-4, B(B-→ρ0ℓ-ν¯ℓ)=(1.83±0.10±0.10)×10-4, B(B¯0→ρ+ℓ-ν¯ℓ)=(3.22±0.27±0.24)×10-4, and B(B-→ωℓ-ν¯ℓ)=(1.07±0.16±0.07)×10-4, where the first error is statistical and the second one is systematic. The obtained branching fractions are inclusive of soft photon emission. Furthermore, we determine the branching fractions as a function of the 4-momentum transfer squared to the leptonic system q2=(pℓ+pν)2, where pℓ and pν are the lepton and neutrino 4-momenta, respectively. Using the pion modes, a recent light cone sum rule calculation, lattice QCD results and a model-independent description of the hadronic form factor, a value of the Cabibbo-Kobayashi-Maskawa matrix element |Vub|=(3.52±0.29)×10-3 is extracted. A structure in the two-pion invariant mass distribution near 1.3GeV/c2, which might be dominated by the decay B-→f2(1270)ℓ-ν¯ℓ, f2→π+π-, is seen. These results are obtained from a 711fb-1 data sample that contains 772×106 BB¯ pairs, collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.},
doi = {10.1103/PhysRevD.88.032005},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 3,
volume = 88,
place = {United States},
year = {2013},
month = {8}
}

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Measurements of branching fractions and <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>q</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math> distributions for <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>π</mml:mi><mml:mi>ℓ</mml:mi><mml:mi>ν</mml:mi></mml:math> and <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>ρ</mml:mi><mml:mi>ℓ</mml:mi><mml:mi>ν</mml:mi></mml:math> decays with <mml:math altimg="si4.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:msup><mml:mi>D</mml:mi><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mo>∗</mml:mo><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:msup><mml:mi>ℓ</mml:mi><mml:mi>ν</mml:mi></mml:math> decay tagging
journal, May 2007


Improved analysis of B → πeν from QCD sum rules on the light-cone
journal, October 2001


Fitting using finite Monte Carlo samples
journal, October 1993


The Belle detector
journal, February 2002

  • Abashian, A.; Gotow, K.; Morgan, N.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 479, Issue 1
  • DOI: 10.1016/S0168-9002(01)02013-7

Electron identification in Belle
journal, June 2002

  • Hanagaki, K.; Kakuno, H.; Ikeda, H.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 485, Issue 3
  • DOI: 10.1016/S0168-9002(01)02113-1

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    The Full Event Interpretation: An Exclusive Tagging Algorithm for the Belle II Experiment
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    • Keck, T.; Abudinén, F.; Bernlochner, Florian U.
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    First measurements of absolute branching fractions of the Ξ c + baryon at Belle
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    Search for the rare decay of B + + ν γ with improved hadronic tagging
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    Measurement of the τ Lepton Polarization and R ( D * ) in the Decay B ¯ D * τ ν ¯ τ
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    First Measurements of Absolute Branching Fractions of the Ξ c 0 Baryon at Belle
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    Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016
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    Progress on semi-leptonic B (s) decays
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    Phenomenological applications of rational approximants
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    B →Vℓ+ℓ− in the Standard Model from light-cone sum rules
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    Measurements of the absolute branching fractions of B + X c c ¯ K + and B + D ¯ ( * ) 0 π + at Belle
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    B - and D -meson leptonic decay constants from four-flavor lattice QCD
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    Search for B μ ν ¯ μ Decays at the Belle Experiment
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    Looking for new physics in leptonic and semileptonic decays of B-meson
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