Measurement of the lepton forward-backward asymmetry in decays with a sum of exclusive modes
Abstract
We report the first measurement of the lepton forward-backward asymmetry $$\mathscr{A}$$FB as a function of the squared four-momentum of the dilepton system, q2, for the electroweak penguin process B→Xsℓ+ℓ- with a sum of exclusive final states, where ℓ is an electron or a muon and Xs is a hadronic recoil system with an s quark. The results are based on a data sample containing 772×106 $$B$$$\bar{B}$$ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. $$\mathscr{A}4FB for the inclusive B→Xsℓ+ℓ- is extrapolated from the sum of 10 exclusive Xs states whose invariant mass is less than 2 GeV/c2. For q2>10.2 GeV2/c2, $$\mathscr{A}$FB<0 is excluded at the 2.3σ level, where σ is the standard deviation. For q2<4.3 GeV2/c2, the result is within 1.8σ of the Standard Model theoretical expectation.
- 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:
- 1594401
- Alternate Identifier(s):
- OSTI ID: 1238698
- Grant/Contract Number:
- SC0009973
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Sato, Y., Ishikawa, A., Yamamoto, H., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Bakich, A. M., Bala, A., Bhardwaj, V., Bhuyan, B., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, I. -S., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Dutta, K., Eidelman, S., Farhat, H., Fast, J. E., Ferber, T., Gaur, V., Garmash, A., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., He, X. H., Hoshi, Y., Hou, W. -S., Hyun, H. J., Iijima, T., Itoh, R., Iwasaki, Y., Iwashita, T., Jaegle, I., Julius, T., Kang, J. H., Kato, E., Kato, Y., Kawai, H., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, M. J., Kim, Y. J., Kinoshita, K., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, Y., Libby, J., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Lukin, P., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Mussa, R., Nakao, M., Natkaniec, Z., Nayak, M., Nedelkovska, E., Nisar, N. K., Nishida, S., Nitoh, O., Ogawa, S., Pakhlov, P., Park, H., Park, H. K., Pedlar, T. K., Peng, T., Pestotnik, R., Petrič, M., Piilonen, L. E., Ribežl, E., Ritter, M., Röhrken, M., Rostomyan, A., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seidl, R., Semmler, D., Senyo, K., Sevior, M. E., Shapkin, M., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Sohn, Y. -S., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Sumiyoshi, T., Tamponi, U., Tatishvili, G., Teramoto, Y., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, Y., Won, E., Yamaoka, J., Yamashita, Y., Yashchenko, S., Yook, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Measurement of the lepton forward-backward asymmetry in B→Xsℓ+ℓ- decays with a sum of exclusive modes. United States: N. p., 2016.
Web. doi:10.1103/PhysRevD.93.032008.
Sato, Y., Ishikawa, A., Yamamoto, H., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Bakich, A. M., Bala, A., Bhardwaj, V., Bhuyan, B., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, I. -S., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Dutta, K., Eidelman, S., Farhat, H., Fast, J. E., Ferber, T., Gaur, V., Garmash, A., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., He, X. H., Hoshi, Y., Hou, W. -S., Hyun, H. J., Iijima, T., Itoh, R., Iwasaki, Y., Iwashita, T., Jaegle, I., Julius, T., Kang, J. H., Kato, E., Kato, Y., Kawai, H., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, M. J., Kim, Y. J., Kinoshita, K., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, Y., Libby, J., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Lukin, P., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Mussa, R., Nakao, M., Natkaniec, Z., Nayak, M., Nedelkovska, E., Nisar, N. K., Nishida, S., Nitoh, O., Ogawa, S., Pakhlov, P., Park, H., Park, H. K., Pedlar, T. K., Peng, T., Pestotnik, R., Petrič, M., Piilonen, L. E., Ribežl, E., Ritter, M., Röhrken, M., Rostomyan, A., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seidl, R., Semmler, D., Senyo, K., Sevior, M. E., Shapkin, M., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Sohn, Y. -S., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Sumiyoshi, T., Tamponi, U., Tatishvili, G., Teramoto, Y., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, Y., Won, E., Yamaoka, J., Yamashita, Y., Yashchenko, S., Yook, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., & Zupanc, A. Measurement of the lepton forward-backward asymmetry in B→Xsℓ+ℓ- decays with a sum of exclusive modes. United States. https://doi.org/10.1103/PhysRevD.93.032008
Sato, Y., Ishikawa, A., Yamamoto, H., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Bakich, A. M., Bala, A., Bhardwaj, V., Bhuyan, B., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, I. -S., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Dutta, K., Eidelman, S., Farhat, H., Fast, J. E., Ferber, T., Gaur, V., Garmash, A., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., He, X. H., Hoshi, Y., Hou, W. -S., Hyun, H. J., Iijima, T., Itoh, R., Iwasaki, Y., Iwashita, T., Jaegle, I., Julius, T., Kang, J. H., Kato, E., Kato, Y., Kawai, H., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, J. H., Kim, M. J., Kim, Y. J., Kinoshita, K., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, Y., Libby, J., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Lukin, P., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Mussa, R., Nakao, M., Natkaniec, Z., Nayak, M., Nedelkovska, E., Nisar, N. K., Nishida, S., Nitoh, O., Ogawa, S., Pakhlov, P., Park, H., Park, H. K., Pedlar, T. K., Peng, T., Pestotnik, R., Petrič, M., Piilonen, L. E., Ribežl, E., Ritter, M., Röhrken, M., Rostomyan, A., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seidl, R., Semmler, D., Senyo, K., Sevior, M. E., Shapkin, M., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Sohn, Y. -S., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Sumiyoshi, T., Tamponi, U., Tatishvili, G., Teramoto, Y., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, Y., Won, E., Yamaoka, J., Yamashita, Y., Yashchenko, S., Yook, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Mon .
"Measurement of the lepton forward-backward asymmetry in B→Xsℓ+ℓ- decays with a sum of exclusive modes". United States. https://doi.org/10.1103/PhysRevD.93.032008. https://www.osti.gov/servlets/purl/1594401.
@article{osti_1594401,
title = {Measurement of the lepton forward-backward asymmetry in B→Xsℓ+ℓ- decays with a sum of exclusive modes},
author = {Sato, Y. and Ishikawa, A. and Yamamoto, H. and Abdesselam, A. and Adachi, I. and Adamczyk, K. and Aihara, H. and Asner, D. M. and Aulchenko, V. and Aushev, T. and Ayad, R. and Bakich, A. M. and Bala, A. and Bhardwaj, V. and Bhuyan, B. and Bondar, A. and Bonvicini, G. and Bozek, A. and Bračko, M. and Browder, T. E. and Červenkov, D. and Chekelian, V. and Chen, A. and Cheon, B. G. and Cho, I. -S. and Cho, K. and Chobanova, V. and Choi, Y. and Cinabro, D. and Dalseno, J. and Danilov, M. and Doležal, Z. and Drásal, Z. and Drutskoy, A. and Dutta, D. and Dutta, K. and Eidelman, S. and Farhat, H. and Fast, J. E. and Ferber, T. and Gaur, V. and Garmash, A. and Gillard, R. and Goh, Y. M. and Golob, B. and Haba, J. and Hara, T. and Hayasaka, K. and Hayashii, H. and He, X. H. and Hoshi, Y. and Hou, W. -S. and Hyun, H. J. and Iijima, T. and Itoh, R. and Iwasaki, Y. and Iwashita, T. and Jaegle, I. and Julius, T. and Kang, J. H. and Kato, E. and Kato, Y. and Kawai, H. and Kawasaki, T. and Kichimi, H. and Kim, D. Y. and Kim, H. J. and Kim, J. B. and Kim, J. H. and Kim, M. J. and Kim, Y. J. and Kinoshita, K. and Klucar, J. and Ko, B. R. and Kodyš, P. and Korpar, S. and Križan, P. and Krokovny, P. and Kuhr, T. and Kumita, T. and Kuzmin, A. and Kwon, Y. -J. and Lee, S. -H. and Li, Y. and Libby, J. and Liu, C. and Liu, Y. and Liu, Z. Q. and Liventsev, D. and Lukin, P. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Moll, A. and Mussa, R. and Nakao, M. and Natkaniec, Z. and Nayak, M. and Nedelkovska, E. and Nisar, N. K. and Nishida, S. and Nitoh, O. and Ogawa, S. and Pakhlov, P. and Park, H. and Park, H. K. and Pedlar, T. K. and Peng, T. and Pestotnik, R. and Petrič, M. and Piilonen, L. E. and Ribežl, E. and Ritter, M. and Röhrken, M. and Rostomyan, A. and Sahoo, H. and Saito, T. and Sakai, Y. and Sandilya, S. and Santel, D. and Santelj, L. and Sanuki, T. and Savinov, V. and Schneider, O. and Schnell, G. and Schwanda, C. and Schwartz, A. J. and Seidl, R. and Semmler, D. and Senyo, K. and Sevior, M. E. and Shapkin, M. and Shen, C. P. and Shibata, T. -A. and Shiu, J. -G. and Shwartz, B. and Sibidanov, A. and Simon, F. and Sohn, Y. -S. and Sokolov, A. and Solovieva, E. and Stanič, S. and Starič, M. and Sumiyoshi, T. and Tamponi, U. and Tatishvili, G. and Teramoto, Y. and Trabelsi, K. and Uchida, M. and Uehara, S. and Uglov, T. and Unno, Y. and Uno, S. and Urquijo, P. and Ushiroda, Y. and Usov, Y. and Vahsen, S. E. and Van Hulse, C. and Vanhoefer, P. and Varner, G. and Varvell, K. E. and Vorobyev, V. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Wang, X. L. and Watanabe, Y. and Won, E. and Yamaoka, J. and Yamashita, Y. and Yashchenko, S. and Yook, Y. and Zhang, Z. P. and Zhilich, V. and Zhulanov, V. and Zupanc, A.},
abstractNote = {We report the first measurement of the lepton forward-backward asymmetry $\mathscr{A}$FB as a function of the squared four-momentum of the dilepton system, q2, for the electroweak penguin process B→Xsℓ+ℓ- with a sum of exclusive final states, where ℓ is an electron or a muon and Xs is a hadronic recoil system with an s quark. 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. $\mathscr{A}4FB for the inclusive B→Xsℓ+ℓ- is extrapolated from the sum of 10 exclusive Xs states whose invariant mass is less than 2 GeV/c2. For q2>10.2 GeV2/c2, $\mathscr{A}$FB<0 is excluded at the 2.3σ level, where σ is the standard deviation. For q2<4.3 GeV2/c2, the result is within 1.8σ of the Standard Model theoretical expectation.},
doi = {10.1103/PhysRevD.93.032008},
journal = {Physical Review D},
number = 3,
volume = 93,
place = {United States},
year = {Mon Feb 01 00:00:00 EST 2016},
month = {Mon Feb 01 00:00:00 EST 2016}
}
Web of Science
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