Measurement of time-dependent CP violation in B0→KS0π0π0 decays decays

Yusa, Y.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bahinipati, S.; Bakich, A. M.; Bansal, V.; Behera, P.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bozek, A.; Bračko, M.; Browder, T. E.; Cao, L.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Choi, S. -K.; Choi, Y.; Cinabro, D.; Cunliffe, S.; Dash, N.; Di Carlo, S.; Dong, T. V.; Drásal, Z.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Fulsom, B. G.; Garg, R.; Gaur, V.; Garmash, A.; Giri, A.; Goldenzweig, P.; Golob, B.; Guan, Y.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hirose, S.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W. W.; Jia, S.; Jin, Y.; Joo, K. K.; Kang, K. H.; Kawasaki, T.; Kiesling, C.; Kim, D. Y.; Kim, J. B.; Kim, K. T.; Kim, S. H.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Križan, P.; Kroeger, R.; Kuhr, T.; Kumar, R.; Kwon, Y. -J.; Lange, J. S.; Lee, I. S.; Lee, S. C.; Li, L. K.; Li, Y. B.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lubej, M.; Luo, T.; Masuda, M.; Matsuda, T.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moon, H. K.; Nakano, E.; Nakao, M.; Nanut, T.; Nath, K. J.; Natkaniec, Z.; Nisar, N. K.; Nishida, S.; Nishimura, K.; Ogawa, K.; Ogawa, S.; Ono, H.; Pakhlova, G.; Pal, B.; Pardi, S.; Park, H.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Popov, V.; Prencipe, E.; Rostomyan, A.; Russo, G.; Sakai, Y.; Sandilya, S.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Schwartz, A. J.; Seino, Y.; Senyo, K.; Seon, O.; Sevior, M. E.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Starič, M.; Sumihama, M.; Sumiyoshi, T.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Ushiroda, Y.; Usov, Y.; Van Hulse, C.; Van Tonder, R.; Varner, G.; Varvell, K. E.; Vorobyev, V.; Vossen, A.; Waheed, E.; Wang, B.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Won, E.; Ye, H.; Yin, J. H.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.

doi:10.1103/PhysRevD.99.011102

Title: Measurement of time-dependent $C P$ violation in $B^{0} \to K_{S}^{0} π^{0} π^{0}$ decays decays

Journal Article · Fri Jan 18 00:00:00 EST 2019 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.99.011102· OSTI ID:1491281

Yusa, Y.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bahinipati, S.; Bakich, A. M.; Bansal, V.; Behera, P.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bozek, A.; Bračko, M.; Browder, T. E. more »

Here, we report a measurement of time-dependent CP violation in B⁰ → K⁰_Sπ⁰π⁰ decays using a data sample of 772 × 10⁶ B¯B pairs collected by the Belle experiment running at the Υ(4S) resonance at the KEKB e⁺e^– collider. This decay proceeds mainly via a b → sd¯d “penguin” amplitude. The results are sin2Φ^eff₁ = 0.92^+0.27_–0.31 (stat.) ±0.11 (syst.) and A = 0.28 ± 0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2Φ^eff₁ is consistent with that obtained using decay modes proceeding via a b → c¯cs “tree” amplitude.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Univ. of Hawaii, Honolulu, HI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); KEK - High Energy Accelerator Research Organization; National Science Foundation (NSF)

Contributing Organization:: The Belle Collaboration; Belle Collaboration

Grant/Contract Number:: AC05-76RL01830; SC0012704; SC0009973; SC0010504

OSTI ID:: 1491281

Alternate ID(s):: OSTI ID: 1494995; OSTI ID: 1508737; OSTI ID: 1593820

Report Number(s):: BNL-211266-2019-JAAM; PNNL-SA-142802; PRVDAQ; 011102

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Vol. 99 Journal Issue: 1; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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