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Title: Measurement of time-dependent CP violation in B 0 K S 0 π 0 π 0 decays decays

Abstract

Here, we report a measurement of time-dependent CP violation in B0 → K0Sπ0π0 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 sin2Φeff1 = 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 sin2Φeff1 is consistent with that obtained using decay modes proceeding via a b → c¯cs “tree” amplitude.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
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 Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); KEK - High Energy Accelerator Research Organization; National Science Foundation (NSF)
Contributing Org.:
The Belle Collaboration; Belle Collaboration
OSTI Identifier:
1491281
Alternate Identifier(s):
OSTI ID: 1494995; OSTI ID: 1508737; OSTI ID: 1593820
Report Number(s):
BNL-211266-2019-JAAM; PNNL-SA-142802
Journal ID: ISSN 2470-0010; PRVDAQ; 011102
Grant/Contract Number:  
AC05-76RL01830; SC0012704; SC0009973; SC0010504
Resource Type:
Published Article
Journal Name:
Physical Review. D.
Additional Journal Information:
Journal Name: Physical Review. D. Journal Volume: 99 Journal Issue: 1; 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

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., and Belle Collaboration. Measurement of time-dependent CP violation in B0→KS0π0π0 decays decays. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.99.011102.
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., & Belle Collaboration. Measurement of time-dependent CP violation in B0→KS0π0π0 decays decays. United States. https://doi.org/10.1103/PhysRevD.99.011102
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., and Belle Collaboration. Fri . "Measurement of time-dependent CP violation in B0→KS0π0π0 decays decays". United States. https://doi.org/10.1103/PhysRevD.99.011102.
@article{osti_1491281,
title = {Measurement of time-dependent CP violation in B0→KS0π0π0 decays decays},
author = {Yusa, Y. and Aihara, H. and Al Said, S. and Asner, D. M. and Atmacan, H. and Aulchenko, V. and Aushev, T. and Ayad, R. and Babu, V. and Badhrees, I. and Bahinipati, S. and Bakich, A. M. and Bansal, V. and Behera, P. and Bhardwaj, V. and Bhuyan, B. and Biswal, J. and Bozek, A. and Bračko, M. and Browder, T. E. and Cao, L. and Červenkov, D. and Chekelian, V. and Chen, A. and Cheon, B. G. and Chilikin, K. and Choi, S. -K. and Choi, Y. and Cinabro, D. and Cunliffe, S. and Dash, N. and Di Carlo, S. and Dong, T. V. and Drásal, Z. and Eidelman, S. and Epifanov, D. and Fast, J. E. and Fulsom, B. G. and Garg, R. and Gaur, V. and Garmash, A. and Giri, A. and Goldenzweig, P. and Golob, B. and Guan, Y. and Haba, J. and Hayasaka, K. and Hayashii, H. and Hirose, S. and Inami, K. and Inguglia, G. and Ishikawa, A. and Itoh, R. and Iwasaki, M. and Iwasaki, Y. and Jacobs, W. W. and Jia, S. and Jin, Y. and Joo, K. K. and Kang, K. H. and Kawasaki, T. and Kiesling, C. and Kim, D. Y. and Kim, J. B. and Kim, K. T. and Kim, S. H. and Kinoshita, K. and Kodyš, P. and Korpar, S. and Kotchetkov, D. and Križan, P. and Kroeger, R. and Kuhr, T. and Kumar, R. and Kwon, Y. -J. and Lange, J. S. and Lee, I. S. and Lee, S. C. and Li, L. K. and Li, Y. B. and Li Gioi, L. and Libby, J. and Liventsev, D. and Lubej, M. and Luo, T. and Masuda, M. and Matsuda, T. and Merola, M. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Moon, H. K. and Nakano, E. and Nakao, M. and Nanut, T. and Nath, K. J. and Natkaniec, Z. and Nisar, N. K. and Nishida, S. and Nishimura, K. and Ogawa, K. and Ogawa, S. and Ono, H. and Pakhlova, G. and Pal, B. and Pardi, S. and Park, H. and Paul, S. and Pedlar, T. K. and Pestotnik, R. and Piilonen, L. E. and Popov, V. and Prencipe, E. and Rostomyan, A. and Russo, G. and Sakai, Y. and Sandilya, S. and Sanuki, T. and Savinov, V. 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 Shen, C. P. and Shibata, T. -A. and Shiu, J. -G. and Starič, M. and Sumihama, M. and Sumiyoshi, T. and Takizawa, M. and Tamponi, U. and Tanida, K. and Tenchini, F. and Uchida, M. and Uglov, T. and Unno, Y. and Uno, S. and Ushiroda, Y. and Usov, Y. and Van Hulse, C. and Van Tonder, R. and Varner, G. and Varvell, K. E. and Vorobyev, V. and Vossen, A. and Waheed, E. and Wang, B. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Won, E. and Ye, H. and Yin, J. H. and Zhang, Z. P. and Zhilich, V. and Zhulanov, V. and Belle Collaboration},
abstractNote = {Here, we report a measurement of time-dependent CP violation in B0 → K0Sπ0π0 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 sin2Φeff1 = 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 sin2Φeff1 is consistent with that obtained using decay modes proceeding via a b → c¯cs “tree” amplitude.},
doi = {10.1103/PhysRevD.99.011102},
journal = {Physical Review. D.},
number = 1,
volume = 99,
place = {United States},
year = {Fri Jan 18 00:00:00 EST 2019},
month = {Fri Jan 18 00:00:00 EST 2019}
}

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https://doi.org/10.1103/PhysRevD.99.011102

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Figures / Tables:

FIG. 1 FIG. 1: Distribution of Rs/b, an event-shape-based likelihood ratio, for signal and qq̄ MC illustrated by solid and broken lines, respectively.

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Works referenced in this record:

CP Nonconservation in Cascade Decays of B Mesons
journal, September 1980


Neutral BB flavor tagging for the measurement of mixing-induced CPCP violation at Belle
journal, November 2004

  • Kakuno, H.; Hara, K.; Casey, B.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 533, Issue 3
  • DOI: 10.1016/S0168-9002(04)01448-2

Precise Measurement of the C P Violation Parameter sin  2 ϕ 1 in B 0 ( c c ¯ ) K 0 Decays
journal, April 2012


The EvtGen particle decay simulation package
journal, April 2001

  • Lange, David J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 462, Issue 1-2
  • DOI: 10.1016/S0168-9002(01)00089-4

CP violation in B -meson decays
journal, April 1981


Measurement of time-dependent C P asymmetry in B 0 c c ¯ K ( * ) 0 decays
journal, April 2009


The NeuroBayes neural network package
journal, April 2006

  • Feindt, M.; Kerzel, U.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 559, Issue 1
  • DOI: 10.1016/j.nima.2005.11.166

Observables for the Analysis of Event Shapes in e + e Annihilation and Other Processes
journal, December 1978


Status of the Belle silicon vertex detector
journal, May 2006

  • Natkaniec, Z.; Aihara, H.; Asano, Y.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 560, Issue 1
  • DOI: 10.1016/j.nima.2005.11.228

A measurement of the branching fraction for the inclusive B→Xsγ decays with the Belle detector
journal, July 2001


Time-dependent CP violation in <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>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>P</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mi>P</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mi>X</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> decays
journal, August 2004


Physics achievements from the Belle experiment
journal, January 2012

  • Brodzicka, J.; Browder, T.; Chang, P.
  • Progress of Theoretical and Experimental Physics, Vol. 2012, Issue 1
  • DOI: 10.1093/ptep/pts072

C P -Violation in the Renormalizable Theory of Weak Interaction
journal, February 1973

  • Kobayashi, Makoto; Maskawa, Toshihide
  • Progress of Theoretical Physics, Vol. 49, Issue 2
  • DOI: 10.1143/PTP.49.652

Proper-time resolution function for measurement of time evolution of B mesons at the KEK B-Factory
journal, November 2004

  • Tajima, H.; Aihara, H.; Higuchi, T.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 533, Issue 3
  • DOI: 10.1016/j.nima.2004.07.199

Review of Particle Physics
journal, August 2018


CP asymmetries in B decays with new physics in decay amplitudes
journal, March 1997


Measurement of C P asymmetries in B 0 K 0 π 0 decays
journal, January 2010


Notes on the observability of CP violations in B decays
journal, December 1981


Measurement of Time-Dependent C P -Violating Asymmetries in B 0 K s 0 K s 0 K s 0 Decay
journal, August 2005


Evidence for B 0 π 0 π 0
journal, December 2003


Search for hadronic b→u decays
journal, May 1990


Measurement of Branching Fractions for B π π , K π , and KK Decays
journal, August 2001


Measurement of C P asymmetry in B 0 K s 0 π 0 π 0 decays
journal, October 2007


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

Impact of tag-side interference on time-dependent CP asymmetry measurements using coherent B 0 B 0 pairs
journal, August 2003


Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016
journal, December 2017


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.