000 01988nab a2200313 c 4500
001 vtls000552728
003 RU-ToGU
005 20210907015015.0
007 cr |
008 181202|2016 xxu s a eng dd
024 7 _a10.1103/PhysRevLett.116.052001
_2doi
035 _ato000552728
040 _aRU-ToGU
_brus
_cRU-ToGU
245 1 0 _aMeasurements of absolute hadronic branching fractions of the Λc+ baryon
_cM. Ablikim, M. N. Achasov, X. C. Ai [et.al.]
520 3 _aWe report the first measurement of absolute hadronic branching fractions of Λ+c baryon at the Λ+cΛ−c production threshold, in the 30 years since the Λ+c discovery. In total, 12 Cabibbo-favored Λ+c hadronic decay modes are analyzed with a double-tag technique, based on a sample of 567  pb−1 of e+e− collisions at s√=4.599  GeV recorded with the BESIII detector. A global least-squares fitter is utilized to improve the measured precision. Among the measurements for twelve Λ+c decay modes, the branching fraction for Λ+c→pK−π+ is determined to be (5.840.270.23)%, where the first uncertainty is statistical and the second is systematic. In addition, the measurements of the branching fractions of the other 11 Cabibbo-favored hadronic decay modes are significantly improved.
653 _aBESIII, детектор
653 _aбарионы
653 _aадроны
655 4 _aстатьи в журналах
_9681159
700 1 _aAblikim, M.
_9117568
700 1 _aChelkov, G. A.
_996983
700 1 _aAchasov, M. N.
_9117569
700 1 _aAi, X. C.
_9117570
773 0 _tPhysical Review Letters
_d2016
_gVol. 116, № 5. P. 052001-1-052001-7
_x0031-9007
852 4 _aRU-ToGU
856 7 _uhttp://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000552728
908 _aстатья
999 _c334828