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

(Belle Collaboration)

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

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
Volume93
Issue number1
DOIs
Publication statusPublished - 2016 Jan 14

Bibliographical note

Funding Information:
Ministry of Education, Culture, Sports, Science, and Technology http://dx.doi.org/10.13039/501100001700 MEXT http://sws.geonames.org/1861060/ MESSC-JP Japan Society for the Promotion of Science http://dx.doi.org/10.13039/501100001691 JSPS http://sws.geonames.org/1861060/ Nagoya''s TLPRC Australian Research Council http://dx.doi.org/10.13039/501100000923 ARC http://sws.geonames.org/2077456/ DIISR Austrian Science Fund http://dx.doi.org/10.13039/501100002428 FWF http://sws.geonames.org/2782113/ National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809 National Science Foundation of China Natural Science Foundation of China NSFC http://sws.geonames.org/1814991/ NNSFC Ministerstvo Åkolství, Mládezˇe a T?lovýchovy http://dx.doi.org/10.13039/501100001823 Ministry of Education, Youth and Sports MÅ MT http://sws.geonames.org/3077311/ CZF Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659 German Research Foundation DFG http://sws.geonames.org/2921044/ DFG VS Department of Science and Technology, Ministry of Science and Technology http://dx.doi.org/10.13039/501100001409 DST http://sws.geonames.org/1269750/ Istituto Nazionale di Fisica Nucleare http://dx.doi.org/10.13039/501100004007 Italian Institute for Nuclear Physics INFN http://sws.geonames.org/3175395/ Ministry of Environment http://dx.doi.org/10.13039/501100003562 MOE http://sws.geonames.org/1835841/ Ministry of Science, ICT and Future Planning http://dx.doi.org/10.13039/501100003621 MSIP http://sws.geonames.org/1835841/ National Research Foundation of Korea http://dx.doi.org/10.13039/501100003725 NRF http://sws.geonames.org/1835841/ GSDC of KISTI BK21Plus MNiSW Narodowe Centrum Nauki http://dx.doi.org/10.13039/501100004281 National Science Centre National Science Centre of Poland Polish National Science Centre National Science Centre, Poland NCN http://sws.geonames.org/798544/ Ministry of Education and Science http://dx.doi.org/10.13039/501100005992 MES http://sws.geonames.org/732800/ 14.A12.31.0006 RFAAE Javna Agencija za Raziskovalno Dejavnost RS http://dx.doi.org/10.13039/501100004329 Slovenian Research Agency ARRS http://sws.geonames.org/3190538/ Ikerbasque, Basque Foundation for Science http://dx.doi.org/10.13039/501100003989 http://sws.geonames.org/2510769/ UPV/EHU SNSF National Science Council http://dx.doi.org/10.13039/501100001868 National Science Council, Taiwan National Science Council of Taiwan NSC http://sws.geonames.org/1668284/ NSCT Ministry of Economic Affairs http://dx.doi.org/10.13039/501100004725 Ministry of Economic Affairs, R.O.C. MOEA http://sws.geonames.org/1668284/ U.S. Department of Energy http://dx.doi.org/10.13039/100000015 Department of Energy DOE http://sws.geonames.org/6252001/ DOE National Science Foundation http://dx.doi.org/10.13039/100000001 NSF http://sws.geonames.org/6252001/ 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

Fingerprint

Dive into the research topics of 'Measurements of the Υ(10860) and Υ(11020) resonances via σ (e+e- → Υ(nS)π+π-)'. Together they form a unique fingerprint.

Cite this