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Title: Measurement of time-dependent CP violation in B 0 → η'K 0 decays

Abstract

We present a measurement of the time-dependent CP violation parameters in B 0η'K 0 decays. The measurement is based on the full data sample containing 772 × 106 \( B\overline{B} \) pairs collected at the Υ(4S) resonance using the Belle detector at the KEKB asymmetric-energy e + e - collider. The measured values of the mixing-induced and direct CP violation parameters are: $$$$ \sin\ 2{\phi}_1^{\mathrm{eff}}=+0.68\pm 0.07\pm 0.03, $$$$ $$$$ {\mathcal{A}}_{{{{}_{\eta}}_{\prime}}_{K^0}}=+0.03\pm 0.05\pm 0.04, $$$$ where the first uncertainty is statistical and the second is systematic. The values obtained are the most accurate to date. Furthermore, these results are consistent with our previous measurements and with the world-average value of sin 2$$\phi$$ 1 measured in B 0J/ψK 0 decays.

Authors:
 [1];  [2];  [3];  [1];  [4];  [3];  [5];  [6];  [7];  [3];  [8]
  1. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
  2. Niigata Univ. (Japan)
  3. Univ. of Tabuk (Saudi Arabia). Faculty of Science, Dept. of Physics
  4. Univ. of Tokyo (Japan). Dept. of Physics
  5. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  6. Russian Academy of Sciences (RAS), Novosibirsk (Russian Federation). Budker Inst. of Nuclear Physics (BINP)
  7. Inst. of Theoretical and Experimental Physics (ITEP), Moscow (Russian Federation)
  8. Indian Inst. of Technology (IIT), Satya Nagar (India)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); 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.:
The BELLE collaboration
OSTI Identifier:
1214647
Alternate Identifier(s):
OSTI ID: 1594448
Grant/Contract Number:  
AC05-76RL01830; SC0009973
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2014; Journal Issue: 10; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CP violation; CKM angle beta; e+-e- Experiments; B physics

Citation Formats

Šantelj, L., Yusa, Y., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., and Bahinipati, S. Measurement of time-dependent CP violation in B 0 → η'K 0 decays. United States: N. p., 2014. Web. doi:10.1007/JHEP10(2014)165.
Šantelj, L., Yusa, Y., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., & Bahinipati, S. Measurement of time-dependent CP violation in B 0 → η'K 0 decays. United States. https://doi.org/10.1007/JHEP10(2014)165
Šantelj, L., Yusa, Y., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., and Bahinipati, S. 2014. "Measurement of time-dependent CP violation in B 0 → η'K 0 decays". United States. https://doi.org/10.1007/JHEP10(2014)165. https://www.osti.gov/servlets/purl/1214647.
@article{osti_1214647,
title = {Measurement of time-dependent CP violation in B 0 → η'K 0 decays},
author = {Šantelj, L. and Yusa, Y. and Abdesselam, A. and Adachi, I. and Aihara, H. and Al Said, S. and Asner, D. M. and Aulchenko, V. and Aushev, T. and Ayad, R. and Bahinipati, S.},
abstractNote = {We present a measurement of the time-dependent CP violation parameters in B 0 → η'K 0 decays. The measurement is based on the full data sample containing 772 × 106 \( B\overline{B} \) pairs collected at the Υ(4S) resonance using the Belle detector at the KEKB asymmetric-energy e + e - collider. The measured values of the mixing-induced and direct CP violation parameters are: $$ \sin\ 2{\phi}_1^{\mathrm{eff}}=+0.68\pm 0.07\pm 0.03, $$ $$ {\mathcal{A}}_{{{{}_{\eta}}_{\prime}}_{K^0}}=+0.03\pm 0.05\pm 0.04, $$ where the first uncertainty is statistical and the second is systematic. The values obtained are the most accurate to date. Furthermore, these results are consistent with our previous measurements and with the world-average value of sin 2$\phi$ 1 measured in B 0 → J/ψK 0 decays.},
doi = {10.1007/JHEP10(2014)165},
url = {https://www.osti.gov/biblio/1214647}, journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 10,
volume = 2014,
place = {United States},
year = {Wed Oct 29 00:00:00 EDT 2014},
month = {Wed Oct 29 00:00:00 EDT 2014}
}

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Works referencing / citing this record:

CP violation in the B system
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