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Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state

Publication ,  Journal Article
Iwashita, T; Miyabayashi, K; Bhardwaj, V; Adachi, I; Aihara, H; Asner, DM; Aushev, T; Bakich, AM; Bala, A; Bhuyan, B; Bonvicini, G; Bozek, A ...
Published in: Progress of Theoretical and Experimental Physics
April 16, 2014
Published version (DOI)

We report an observation of the B±→ J/ψηK± and B0 → J/ψηK0S decays using 772 × 106BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B?→ J/ψηK±) = (1.27 ±0.11(stat.) ±0.11(syst.)) ×10-4 and B(B0 → J/ψηK0 S ) = (5.22 ±0.78(stat.) ± 0.49(syst.)) ×10-5. We search for a new narrow charmonium(-like) state X in the J/ψη mass spectrum and find no significant excess. We set upper limits on the product of branching fractions, B(B±→ X K± )B(X → J/ψη), at 3872MeVc-2 where aC-odd partner of X(3872) may exist, at ψ(4040) and ψ(4160) assuming their known mass and width, and over a range from 3.8 to 4.8 GeV c-2. The obtained upper limits at 90% confidence level for XC-odd(3872), ψ(4040), and ψ(4160) are 3.8 ×10-6, 15.5 ×10-6, and 7.4 ×10-6, respectively.

Duke Scholars

Anselm G. Vossen
Author Anselm G. Vossen Physics
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Published In

Progress of Theoretical and Experimental Physics

DOI

10.1093/ptep/ptu043

EISSN

2050-3911

Publication Date

April 16, 2014

Volume

2014

Issue

4

Related Subject Headings

  • 51 Physical sciences
  • 49 Mathematical sciences
 

Citation

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MLA
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Iwashita, T., Miyabayashi, K., Bhardwaj, V., Adachi, I., Aihara, H., Asner, D. M., … Ng, C. (2014). Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state. Progress of Theoretical and Experimental Physics, 2014(4). https://doi.org/10.1093/ptep/ptu043
Iwashita, T., K. Miyabayashi, V. Bhardwaj, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, et al. “Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state.” Progress of Theoretical and Experimental Physics 2014, no. 4 (April 16, 2014). https://doi.org/10.1093/ptep/ptu043.
Iwashita T, Miyabayashi K, Bhardwaj V, Adachi I, Aihara H, Asner DM, et al. Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state. Progress of Theoretical and Experimental Physics. 2014 Apr 16;2014(4).
Iwashita, T., et al. “Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state.” Progress of Theoretical and Experimental Physics, vol. 2014, no. 4, Apr. 2014. Scopus, doi:10.1093/ptep/ptu043.
Iwashita T, Miyabayashi K, Bhardwaj V, Adachi I, Aihara H, Asner DM, Aushev T, Bakich AM, Bala A, Bhuyan B, Bonvicini G, Bozek A, Bračko M, Browder TE, Chang MC, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Dutta D, Eidelman S, Esen S, Farhat H, Fast JE, Feindt M, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Higuchi T, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Julius T, Kah DH, Kang JH, Kato E, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim HJ, Kim HO, Kim JB, Kim JH, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyšs P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li Y, Libby J, Liu C, Liu Y, Lukin P, Matvienko D, Miyata H, Mizuk R, Moll A, Mori T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Ng C. Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state. Progress of Theoretical and Experimental Physics. 2014 Apr 16;2014(4).
Journal cover image

Published In

Progress of Theoretical and Experimental Physics

DOI

10.1093/ptep/ptu043

EISSN

2050-3911

Publication Date

April 16, 2014

Volume

2014

Issue

4

Related Subject Headings

  • 51 Physical sciences
  • 49 Mathematical sciences