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First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P).

Publication ,  Journal Article
Adachi, I; Aihara, H; Arinstein, K; Asner, DM; Aushev, T; Aziz, T; Bakich, AM; Barberio, E; Belous, K; Bhardwaj, V; Bhuyan, B; Bondar, A ...
Published in: Physical review letters
January 2012

We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-)→h(b)(nP)π(+)π(-) using a 121.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine M[h(b)(1P)]=(9898.2(-1.0-1.1)(+1.1+1.0)) MeV/c(2) and M[h(b)(2P)]=(10,259.8±0.6(-1.0)(+1.4)) MeV/c(2), which correspond to P-wave hyperfine splittings ΔM(HF)=(+1.7±1.5) and (+0.5(-1.2)(+1.6)) MeV/c(2), respectively. The significances of the h(b)(1P) and h(b)(2P) are 5.5σ and 11.2σ, respectively. We find that the production of the h(b)(1P) and h(b)(2P) is not suppressed relative to the production of the Υ(1S), Υ(2S), and Υ(3S).

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 2012

Volume

108

Issue

3

Start / End Page

032001

Related Subject Headings

  • Thermodynamics
  • Spectrum Analysis
  • Quantum Theory
  • General Physics
  • Elementary Particles
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
 

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Adachi, I., Aihara, H., Arinstein, K., Asner, D. M., Aushev, T., Aziz, T., … Belle Collaboration, . (2012). First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P). Physical Review Letters, 108(3), 032001. https://doi.org/10.1103/physrevlett.108.032001
Adachi, I., H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, et al. “First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P).Physical Review Letters 108, no. 3 (January 2012): 032001. https://doi.org/10.1103/physrevlett.108.032001.
Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, et al. First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P). Physical review letters. 2012 Jan;108(3):032001.
Adachi, I., et al. “First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P).Physical Review Letters, vol. 108, no. 3, Jan. 2012, p. 032001. Epmc, doi:10.1103/physrevlett.108.032001.
Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bondar A, Bračko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho I-S, Cho K, Choi Y, Dalseno J, Danilov M, Drásal Z, Drutskoy A, Eidelman S, Epifanov D, Esen S, Fast JE, Feindt M, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Hara T, Hayasaka K, Hayashii H, Hoshi Y, Hou W-S, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Iwabuchi M, Iwasaki Y, Jaegle I, Julius T, Kang JH, Katayama N, Kawasaki T, Kichimi H, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Koblitz S, Korpar S, Križan P, Kuhr T, Kumita T, Kuzmin A, Kwon Y-J, Lange JS, Lee S-H, Li J, Libby J, Liu C, Liventsev D, Louvot R, MacNaughton J, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mussa R, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shibata T-A, Shiu J-G, Shwartz B, Simon F, Smerkol P, Sohn Y-S, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vahsen SE, Varner G, Varvell KE, Vinokurova A, Wang CH, Wang XL, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhilich V, Zupanc A, Belle Collaboration. First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P). Physical review letters. 2012 Jan;108(3):032001.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 2012

Volume

108

Issue

3

Start / End Page

032001

Related Subject Headings

  • Thermodynamics
  • Spectrum Analysis
  • Quantum Theory
  • General Physics
  • Elementary Particles
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences