Search for long-lived scalar particles in b+-> k+chi(mu(+) mu(-)) decays
文献类型：期刊论文
| 作者 | Aaij, R.40; Adeva, B.39; Adinolfi, M.48; Ajaltouni, Z.5; Akar, S.59; Albrecht, J.10; Alessio, F.40; Alexander, M.53; Ali, S.44; Alkhazov, G.31 |
| 刊名 | Physical review d
 |
| 出版日期 | 2017-04-14 |
| 卷号 | 95期号:7页码:9 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.95.071101 |
| 英文摘要 | A search for a long-lived scalar particle. is performed, looking for the decay b+ -> k+chi with chi ->mu(+)mu(-) pp collision data corresponding to an integrated luminosity of 3 fb(-1), collected by the lhcb experiment at center-of-mass energies of root s = 7 and 8 tev. this new scalar particle, predicted by hidden sector models, is assumed to have a narrow width. the signal would manifest itself as an excess in the dimuon invariant mass distribution over the standard model background. no significant excess is observed in the accessible ranges of mass 250 < m(chi) < 4700 mev/c(2) and lifetime 0.1 < tau(chi) < 1000 ps. upper limits on the branching fraction b(b-broken vertical bar -> k-broken vertical bar chi(mu(vertical bar) mu(-))) at 95% confidence level are set as a function of m(chi) and tau(chi), varying between 2 x 10(-10) and 10(-7). these are the most stringent limits to date. the limits are interpreted in the context of a model with a light inflaton particle. |
| WOS关键词 | INFLATON |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000399946100001 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177206 |
| 专题 | 高能物理研究所 |
| 作者单位 | 1.CBPF, 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.Univ Savoie Mont Blanc, LAPP, CNRS IN2P3, Annecy Le Vieux, France 5.Univ Blaise Pascal, Clermont Univ, CNRS IN2P3, Clermont Ferrand, France 6.Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France 7.Univ Paris 11, LAL, CNRS IN2P3, Orsay, France 8.Univ Paris 06, Univ Paris Diderot, LPNHE, CNRS IN2P3, Paris, France 9.Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany 10.Tech Univ Dortmund, Fak Phys, Dortmund, Germany |
| 推荐引用方式 GB/T 7714 | Aaij, R.,Adeva, B.,Adinolfi, M.,et al. Search for long-lived scalar particles in b+-> k+chi(mu(+) mu(-)) decays[J]. Physical review d,2017,95(7):9. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Search for long-lived scalar particles in b+-> k+chi(mu(+) mu(-)) decays.Physical review d,95(7),9. |
| MLA | Aaij, R.,et al."Search for long-lived scalar particles in b+-> k+chi(mu(+) mu(-)) decays".Physical review d 95.7(2017):9. |
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来源：高能物理研究所
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