| 000 | 03238nlm1a2200397 4500 | ||
|---|---|---|---|
| 001 | 664690 | ||
| 005 | 20231030041938.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\35874 | ||
| 090 | _a664690 | ||
| 100 | _a20210513a2021 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aObservation of a new Ξ0b state _fR. Aaij, C. A. Beteta, T. Ackernley [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 63 tit.] | ||
| 330 | _aUsing a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 8.5 fb−1, the observation of a new excited Ξ0b resonance decaying to the Ξ−bπ+ final state is presented. The state, referred to as Ξb(6227)0, has a measured mass and natural width of m(Ξb(6227)0)=6227.1+1.4−1.5±0.5 MeV and Γ(Ξb(6227)0)=18.6+5.0−4.1±1.4 MeV, where the uncertainties are statistical and systematic. The production rate of the Ξb(6227)0 state relative to that of the Ξ−b baryon in the kinematic region 2<η<5 and pT<30 GeV is measured to be fΞb(6227)0fΞ−bB(Ξb(6227)0→Ξ−bπ+)=0.045±0.008±0.004, where B(Ξb(6227)0→Ξ−bπ+) is the branching fraction of the decay, and fΞb(6227)0 and fΞ−b represent fragmentation fractions. Improved measurements of the mass and natural width of the previously observed Ξb(6227)− state, along with the mass of the Ξ−b baryon, are also reported. Both measurements are significantly more precise than, and consistent with, previously reported values. | ||
| 461 |
_tPhysical Review D _oparticles, fields, gravitation, and cosmology |
||
| 463 |
_tVol. 103, iss. 1 _v[012004, 17 p.] _d2021 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aAaij _bR. _gRoel |
|
| 701 | 1 |
_aBeteta _bC. A. _gCarlos Abellan |
|
| 701 | 1 |
_aAckernley _bT. |
|
| 701 | 1 |
_aAdeva _bB. _gBernardo |
|
| 701 | 1 |
_aEydelman _bS. I. _gSemen Isaakovich |
|
| 701 | 1 |
_aKharisova _bA. E. _cnuclear technology specialist _cengineer of Tomsk Polytechnic University _f1994- _gAnastasiya Evgenjevna _2stltpush _3(RuTPU)RU\TPU\pers\46775 |
|
| 701 | 1 |
_aPanshin _bG. L. _cspecialist in the field of informatics and computer technology _cAssistant of the Department of Tomsk Polytechnic University _f1987- _gGennady Leonidovich _2stltpush _3(RuTPU)RU\TPU\pers\40978 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИнженерная школа информационных технологий и робототехники _bОтделение автоматизации и робототехники (ОАР) _h7952 _2stltpush _3(RuTPU)RU\TPU\col\23553 |
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИсследовательская школа физики высокоэнергетических процессов _c(2017- ) _h8118 _2stltpush _3(RuTPU)RU\TPU\col\23551 |
| 801 | 2 |
_aRU _b63413507 _c20211117 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1103/PhysRevD.103.012004 | |
| 942 | _cCF | ||