%0 Journal Article %1 Collaboration2014Search %A Collaboration, Belle %A Dutta, D. %A Bhuyan, B. %A Abdesselam, A. %A Adachi, I. %A Aihara, H. %A Said, S. Al %A Arinstein, K. %A Asner, D. M. %A Aulchenko, V. %A Aushev, T. %A Ayad, R. %A Aziz, T. %A Bahinipati, S. %A Bakich, A. M. %A Bansal, V. %A Bhardwaj, V. %A Bobrov, A. %A Bonvicini, G. %A Bracko, M. %A Browder, T. E. %A Cervenkov, D. %A Chen, A. %A Cheon, B. G. %A Chilikin, K. %A Chistov, R. %A Cho, K. %A Chobanova, V. %A Choi, Y. %A Cinabro, D. %A Dalseno, J. %A Dolezal, Z. %A Drásal, Z. %A Drutskoy, A. %A Dutta, K. %A Eidelman, S. %A Farhat, H. %A Fast, J. E. %A Frost, O. %A Gaur, V. %A Ganguly, S. %A Garmash, A. %A Getzkow, D. %A Goh, Y. M. %A Golob, B. %A Hayashii, H. %A He, X. H. %A Hou, W. S. %A Iijima, T. %A Ishikawa, A. %A Iwasaki, Y. %A Jaegle, I. %A Joffe, D. %A Kang, K. H. %A Kato, E. %A Kiesling, C. %A Kim, D. Y. %A Kim, J. B. %A Kim, J. H. %A Kim, K. T. %A Kim, M. J. %A Kim, S. H. %A Kim, Y. J. %A Kinoshita, K. %A Ko, B. R. %A Kodys, P. %A Korpar, S. %A Krizan, P. %A Krokovny, P. %A Kuhr, T. %A Kuzmin, A. %A Kwon, Y. J. %A Lange, J. S. %A Lee, I. S. %A Lewis, P. %A Li, Y. %A Gioi, Li L. %A Libby, J. %A Liventsev, D. %A Matvienko, D. %A Miyata, H. %A Mizuk, R. %A Mohanty, G. B. %A Moll, A. %A Mori, T. %A Mussa, R. %A Nakano, E. %A Nakao, M. %A Nanut, T. %A Nayak, M. %A Nisar, N. K. %A Nishida, S. %A Ogawa, S. %A Okuno, S. %A Pakhlov, P. %A Pakhlova, G. %A Pedlar, T. K. %A Pestotnik, R. %A Petric, M. %A Piilonen, L. E. %A Ribezl, E. %A Ritter, M. %A Rostomyan, A. %A Sakai, Y. %A Sandilya, S. %A Santelj, L. %A Sanuki, T. %A Sato, Y. %A Savinov, V. %A Schneider, O. %A Schnell, G. %A Schwanda, C. %A Schwartz, A. J. %A Semmler, D. %A Shebalin, V. %A Shibata, T. A. %A Shiu, J. G. %A Shwartz, B. %A Sibidanov, A. %A Simon, F. %A Sohn, Y. S. %A Sokolov, A. %A Solovieva, E. %A Staric, M. %A Sumihama, M. %A Sumiyoshi, T. %A Teramoto, Y. %A Trabelsi, K. %A Uchida, M. %A Unno, Y. %A Uno, S. %A Usov, Y. %A Van Hulse, C. %A Vanhoefer, P. %A Varner, G. %A Vinokurova, A. %A Vossen, A. %A Wagner, M. N. %A Wang, C. H. %A Wang, P. %A Watanabe, Y. %A Wehle, S. %A Williams, K. M. %A Won, E. %A Yamamoto, H. %A Yamaoka, J. %A Yashchenko, S. %A Yusa, Y. %A Zhang, Z. P. %A Zhilich, V. %A Zupanc, A. %D 2014 %J Physical Review D %K b2photon %N 1 %R 10.1103/physrevd.91.011101 %T Search for \$B\_s^0\rightarrow\gamma\gamma\$ and a measurement of the branching fraction for \$B\_s^0\rightarrow\phi\gamma\$ %U http://dx.doi.org/10.1103/physrevd.91.011101 %V 91 %X We search for the decay \$B\_s^0\rightarrow\gamma\gamma\$ and measure the branching fraction for \$B\_s^0\rightarrow\phi\gamma\$ using 121.4\~\$fb^-1\$ of data collected at the \$\Upsilon(5S)\$ resonance with the Belle detector at the KEKB asymmetric-energy \$e^+e^-\$ collider. The \$B\_s^0\rightarrow\phi\gamma\$ branching fraction is measured to be \$(3.6 0.5 (stat.) 0.3 (syst.) 0.6 (f\_s)) 10^-5\$, where \$f\_s\$ is the fraction of \$B\_s^(*)B\_s^(*)\$ in \$bb\$ events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay \$B\_s^0\rightarrow\gamma\gamma\$ and set a \$90\%\$ confidence-level upper limit on its branching fraction at \$ 3.1 10^-6\$. This constitutes a significant improvement over the previous result.

@article{Collaboration2014Search, abstract = {We search for the decay \$B\_{s}^{0}\rightarrow\gamma\gamma\$ and measure the branching fraction for \$B\_{s}^{0}\rightarrow\phi\gamma\$ using 121.4\~{}\$\textrm{fb}^{-1}\$ of data collected at the \$\Upsilon(\mathrm{5}S)\$ resonance with the Belle detector at the KEKB asymmetric-energy \$e^{+}e^{-}\$ collider. The \$B\_{s}^{0}\rightarrow\phi\gamma\$ branching fraction is measured to be \$(3.6 \pm 0.5 (\mathrm{stat.}) \pm 0.3 (\mathrm{syst.}) \pm 0.6 (f\_{s})) \times 10^{-5}\$, where \$f\_{s}\$ is the fraction of \$B\_{s}^{(*)}\bar{B}\_{s}^{(*)}\$ in \$b\bar{b}\$ events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay \$B\_{s}^{0}\rightarrow\gamma\gamma\$ and set a \$90\%\$ confidence-level upper limit on its branching fraction at \$ 3.1 \times 10^{-6}\$. This constitutes a significant improvement over the previous result.}, added-at = {2019-02-23T22:09:48.000+0100}, archiveprefix = {arXiv}, author = {Collaboration, Belle and Dutta, D. and Bhuyan, B. and Abdesselam, A. and Adachi, I. and Aihara, H. and Said, S. Al and Arinstein, K. and Asner, D. M. and Aulchenko, V. and Aushev, T. and Ayad, R. and Aziz, T. and Bahinipati, S. and Bakich, A. M. and Bansal, V. and Bhardwaj, V. and Bobrov, A. and Bonvicini, G. and Bra\v{c}ko, M. and Browder, T. E. and \v{C}ervenkov, D. 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 Dalseno, J. and Dole\v{z}al, Z. and Dr\'{a}sal, Z. and Drutskoy, A. and Dutta, K. and Eidelman, S. and Farhat, H. and Fast, J. E. and Frost, O. and Gaur, V. and Ganguly, S. and Garmash, A. and Getzkow, D. and Goh, Y. M. and Golob, B. and Hayashii, H. and He, X. H. and Hou, W. S. and Iijima, T. and Ishikawa, A. and Iwasaki, Y. and Jaegle, I. and Joffe, D. and Kang, K. H. and Kato, E. and Kiesling, C. and Kim, D. Y. 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 Ko, B. R. and Kody\v{s}, P. and Korpar, S. and Kri\v{z}an, P. and Krokovny, P. and Kuhr, T. and Kuzmin, A. and Kwon, Y. J. and Lange, J. S. and Lee, I. S. and Lewis, P. and Li, Y. and Gioi, Li L. and Libby, J. and Liventsev, D. and Matvienko, D. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Moll, A. and Mori, T. and Mussa, R. and Nakano, E. and Nakao, M. and Nanut, T. and Nayak, M. and Nisar, N. K. and Nishida, S. and Ogawa, S. and Okuno, S. and Pakhlov, P. and Pakhlova, G. and Pedlar, T. K. and Pestotnik, R. and Petri\v{c}, M. and Piilonen, L. E. and Ribe\v{z}l, E. and Ritter, M. and Rostomyan, A. 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 Schwartz, A. J. and Semmler, D. and Shebalin, V. 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 Stari\v{c}, M. and Sumihama, M. and Sumiyoshi, T. and Teramoto, Y. and Trabelsi, K. and Uchida, M. and Unno, Y. and Uno, S. and Usov, Y. and Van Hulse, C. and Vanhoefer, P. and Varner, G. and Vinokurova, A. and Vossen, A. and Wagner, M. N. and Wang, C. H. and Wang, P. and Watanabe, Y. and Wehle, S. and Williams, K. M. and Won, E. and Yamamoto, H. and Yamaoka, J. and Yashchenko, S. and Yusa, Y. and Zhang, Z. P. and Zhilich, V. and Zupanc, A.}, biburl = {https://www.bibsonomy.org/bibtex/2641983eb5293759613a2a9de053ac4cc/cmcneile}, citeulike-article-id = {13702221}, citeulike-linkout-0 = {http://arxiv.org/abs/1411.7771}, citeulike-linkout-1 = {http://arxiv.org/pdf/1411.7771}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/physrevd.91.011101}, day = 28, doi = {10.1103/physrevd.91.011101}, eprint = {1411.7771}, interhash = {1ea7f0e6e6aacd50772baa66b97de8ce}, intrahash = {641983eb5293759613a2a9de053ac4cc}, issn = {1550-7998}, journal = {Physical Review D}, keywords = {b2photon}, month = nov, number = 1, posted-at = {2015-08-14 15:57:53}, priority = {2}, timestamp = {2019-02-23T22:15:27.000+0100}, title = {Search for \$B\_{s}^{0}\rightarrow\gamma\gamma\$ and a measurement of the branching fraction for \$B\_{s}^{0}\rightarrow\phi\gamma\$}, url = {http://dx.doi.org/10.1103/physrevd.91.011101}, volume = 91, year = 2014 }