Measurements of the Υ(10860) and Υ(11020) resonances via σ (e+e- → Υ(nS)π+π-)

(Belle Collaboration)

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47 Citations (Scopus)


We report new measurements of the total cross sections for e+e-→(nS)π+π- (n=1, 2, 3) and e+e-→bb¯ from a high-luminosity fine scan of the region s=10.63-11.05 GeV with the Belle detector. We observe that the (nS)π+π- spectra have little or no nonresonant component and extract from them the masses and widths of (10860) and (11020) and their relative phase. We find M10860=(10891.1±3.2-1.7+0.6) MeV/c2 and Γ10860=(53.7-5.6 -5.4+7.1 +1.3) MeV and report first measurements M11020=(10987.5-2.5 -2.1+6.4 +9.0) MeV/c2, Γ11020=(61-19 -20+9 +2) MeV, and φ11020-φ10860=(-1.0±0.4-0.1+1.4) rad.

Original languageEnglish
Article number011101
JournalPhysical Review D
Issue number1
Publication statusPublished - 2016 Jan 14

Bibliographical note

Funding Information:
Ministry of Education, Culture, Sports, Science, and Technology MEXT MESSC-JP Japan Society for the Promotion of Science JSPS Nagoya''s TLPRC Australian Research Council ARC DIISR Austrian Science Fund FWF National Natural Science Foundation of China National Science Foundation of China Natural Science Foundation of China NSFC NNSFC Ministerstvo Åkolství, Mládezˇe a T?lovýchovy Ministry of Education, Youth and Sports MÅ MT CZF Deutsche Forschungsgemeinschaft German Research Foundation DFG DFG VS Department of Science and Technology, Ministry of Science and Technology DST Istituto Nazionale di Fisica Nucleare Italian Institute for Nuclear Physics INFN Ministry of Environment MOE Ministry of Science, ICT and Future Planning MSIP National Research Foundation of Korea NRF GSDC of KISTI BK21Plus MNiSW Narodowe Centrum Nauki National Science Centre National Science Centre of Poland Polish National Science Centre National Science Centre, Poland NCN Ministry of Education and Science MES 14.A12.31.0006 RFAAE Javna Agencija za Raziskovalno Dejavnost RS Slovenian Research Agency ARRS Ikerbasque, Basque Foundation for Science UPV/EHU SNSF National Science Council National Science Council, Taiwan National Science Council of Taiwan NSC NSCT Ministry of Economic Affairs Ministry of Economic Affairs, R.O.C. MOEA U.S. Department of Energy Department of Energy DOE DOE National Science Foundation NSF NSF We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and PNNL/EMSL for valuable computing and SINET4 network support. We acknowledge support from MEXT, JSPS, and Nagoya''s TLPRC (Japan); ARC and DIISR (Australia); FWF (Austria); NSFC (China); MSMT (Czechia); CZF, DFG, and VS (Germany); DST (India); INFN (Italy); MOE, MSIP, NRF, GSDC of KISTI, and BK21Plus (Korea); MNiSW and NCN (Poland); MES (particularly under Contract No. 14.A12.31.0006) and RFAAE (Russia); ARRS (Slovenia); IKERBASQUE and UPV/EHU (Spain); SNSF (Switzerland); NSC and MOE (Taiwan); and DOE and NSF (U.S.).

Publisher Copyright:
© 2016 American Physical Society.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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