Measurement of the mass and production rate of xi(-)(b)( )baryons
文献类型：期刊论文
| 作者 | Aaij, R.28; Beteta, C. Abellan46; Adeva, B.43; Adinolfi, M.50; Aidala, C. A.84,85; Ajaltouni, Z.6; Akar, S.61; Albicocco, P.19; Albrecht, J.11; Alessio, F.44 |
| 刊名 | Physical review d
 |
| 出版日期 | 2019-03-22 |
| 卷号 | 99期号:5页码:13 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.99.052006 |
| 通讯作者 | Aaij, r.() |
| 英文摘要 | The first measurement of the production rate of xi(-)(b) baryons in pp collisions relative to that of lambda(0 )(b)baryons is reported, using data samples collected by the lhcb experiment, and corresponding to integrated luminosities of 1, 2 and 1.6 fb(-1) at root s = 7, 8 and 13 tev, respectively. in the kinematic region 2 < eta < 6 and p(t) < 20 gev/c, we measure f(xi b-)/f(lambda b0) b(xi(-)(b)-> j/psi xi(-))/b(lambda(0)(b)-> j/psi lambda)= (10.8 +/- 0.9 +/- 0.8) x 10(-2) [root s = 7,8 tev], f(xi b-)/f(lambda b0) b(xi(-)(b)-> j/psi xi(-))/b(lambda(0)(b)-> j/psi lambda) =(13.1 +/- 1.1 +/- 1.0) x 10(-2) [root s = 13 tev], where and f(xi b-) and f(lambda)(b0) the fragmentation fractions of b quarks into xi(-)(b) and lambda(0)(b) baryons, respectively; b represents branching fractions; and the uncertainties are due to statistical and experimental systematic sources. the values of f(xi b-)/f(lambda b0) are obtained by invoking su(3) symmetry in the xi(-)(b)-> j/psi xi(-) and lambda(0)(b)-> j/psi lambda decays. production asymmetries between xi(-)(b) and (xi) over bar (+)(b) baryons are also reported. the mass of the xi(-)(b) baryon is also measured relative to that of the lambda(0)(b) baryon, from which it is found that m(xi(-)(b)) = 5796.70 +/- 0.39 +/- 0.15 +/- 0.17 mev/c(2), where the last uncertainty is due to the precision on the known lambda(0)(b) mass. this result represents the most precise determination of the xi(-)(b) mass. |
| WOS关键词 | DISCARDING 1/N(C) ; PP COLLISIONS ; DECAYS ; BEAUTY ; LAMBDA(0)(B) ; RULE ; TOOL |
| 资助项目 | CERN ; CAPES (Brazil) ; CNPq (Brazil) ; FAPERJ (Brazil) ; FINEP (Brazil) ; MOST (China) ; NSFC (China) ; CNRS/IN2P3 (France) ; BMBF (Germany) ; DFG (Germany) ; MPG (Germany) ; INFN (Italy) ; NWO (Netherlands) ; MNiSW (Poland) ; NCN (Poland) ; MEN/IFA (Romania) ; MSHE (Russia) ; MinECo (Spain) ; SNSF (Switzerland) ; SER (Switzerland) ; NASU (Ukraine) ; STFC (United Kingdom) ; NSF (USA) ; AvH Foundation (Germany) ; EPLANET (European Union) ; Marie Sklodowska-Curie Actions (European Union) ; ERC (European Union) ; ANR (France) ; Labex P2IO (France) ; Labex OCEVU (France) ; Region Auvergne-Rhone-Alpes (France) ; Key Research Program of Frontier Sciences of CAS (China) ; CAS PIFI (China) ; Thousand Talents Program (China) ; RFBR (Russia) ; RSF (Russia) ; Yandex LLC (Russia) ; GVA (Spain) ; XuntaGal (Spain) ; GENCAT (Spain) ; Royal Society (United Kingdom) ; Leverhulme Trust (United Kingdom) ; Laboratory Directed Research and Development program of LANL (USA) |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000462907300001 |
| 资助机构 | CERN ; CAPES (Brazil) ; CNPq (Brazil) ; FAPERJ (Brazil) ; FINEP (Brazil) ; MOST (China) ; NSFC (China) ; CNRS/IN2P3 (France) ; BMBF (Germany) ; DFG (Germany) ; MPG (Germany) ; INFN (Italy) ; NWO (Netherlands) ; MNiSW (Poland) ; NCN (Poland) ; MEN/IFA (Romania) ; MSHE (Russia) ; MinECo (Spain) ; SNSF (Switzerland) ; SER (Switzerland) ; NASU (Ukraine) ; STFC (United Kingdom) ; NSF (USA) ; AvH Foundation (Germany) ; EPLANET (European Union) ; Marie Sklodowska-Curie Actions (European Union) ; ERC (European Union) ; ANR (France) ; Labex P2IO (France) ; Labex OCEVU (France) ; Region Auvergne-Rhone-Alpes (France) ; Key Research Program of Frontier Sciences of CAS (China) ; CAS PIFI (China) ; Thousand Talents Program (China) ; RFBR (Russia) ; RSF (Russia) ; Yandex LLC (Russia) ; GVA (Spain) ; XuntaGal (Spain) ; GENCAT (Spain) ; Royal Society (United Kingdom) ; Leverhulme Trust (United Kingdom) ; Laboratory Directed Research and Development program of LANL (USA) |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2160803 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaij, R. |
| 作者单位 | 1.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil 2.Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil 3.Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China 4.Inst High Energy Phys, Beijing, Peoples R China 5.Univ Savoie Mont Blanc, Univ Grenoble Alpes, CNRS, IN2P3 LAPP, Annecy, France 6.Univ Clermont Auvergne, LPC, IN2P3, CNRS, Clermont Ferrand, France 7.Aix Marseille Univ, CPPM, IN2P3, CNRS, Marseille, France 8.Univ Paris Sud, Univ Paris Saclay, IN2P3, CNRS,LAL, Orsay, France 9.Sorbonne Univ, IN2P3, CNRS, Paris Diderot Sorbonne Paris Cite, Paris, France 10.Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany |
| 推荐引用方式 GB/T 7714 | Aaij, R.,Beteta, C. Abellan,Adeva, B.,et al. Measurement of the mass and production rate of xi(-)(b)( )baryons[J]. Physical review d,2019,99(5):13. |
| APA | Aaij, R..,Beteta, C. Abellan.,Adeva, B..,Adinolfi, M..,Aidala, C. A..,...&Zucchelli, S..(2019).Measurement of the mass and production rate of xi(-)(b)( )baryons.Physical review d,99(5),13. |
| MLA | Aaij, R.,et al."Measurement of the mass and production rate of xi(-)(b)( )baryons".Physical review d 99.5(2019):13. |
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