Feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF
Abstract We report a sensitive study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^{0}\rightarrow K_1(1270)^-e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e with an integrated luminosity of $$\mathscr {L}$$ L = 1 ab $$^{-1}$$ - 1 at a center-of-mass energy of 3.773 GeV at a futu...
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oai:doaj.org-article:3faae47a8e0046a6a203c685b5df22312021-12-05T12:09:03ZFeasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF10.1140/epjc/s10052-021-09841-y1434-60441434-6052https://doaj.org/article/3faae47a8e0046a6a203c685b5df22312021-12-01T00:00:00Zhttps://doi.org/10.1140/epjc/s10052-021-09841-yhttps://doaj.org/toc/1434-6044https://doaj.org/toc/1434-6052Abstract We report a sensitive study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^{0}\rightarrow K_1(1270)^-e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e with an integrated luminosity of $$\mathscr {L}$$ L = 1 ab $$^{-1}$$ - 1 at a center-of-mass energy of 3.773 GeV at a future Super Tau Charm Facility. More than 61,000 signals of $$D^{0}\rightarrow K_1(1270)^-e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e are expected. Based on a fast simulation software package, the statistical sensitivity for the ratio of up-down asymmetry is estimated to be $$1.5\times 10^{-2}$$ 1.5 × 10 - 2 by performing a two-dimensional angular analysis in $$D^{0}\rightarrow K_1(1270)^-e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e . Combining with measurements of up-down asymmetry in $$B\rightarrow K_1\gamma $$ B → K 1 γ , the photon polarisation in $$b\rightarrow s\gamma $$ b → s γ can be determined model-independently.Yu-Lan FanXiao-Dong ShiXiao-Rong ZhouLiang SunSpringerOpenarticleAstrophysicsQB460-466Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENEuropean Physical Journal C: Particles and Fields, Vol 81, Iss 12, Pp 1-8 (2021) |
| institution |
DOAJ |
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DOAJ |
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EN |
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Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 |
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Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Yu-Lan Fan Xiao-Dong Shi Xiao-Rong Zhou Liang Sun Feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF |
| description |
Abstract We report a sensitive study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^{0}\rightarrow K_1(1270)^-e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e with an integrated luminosity of $$\mathscr {L}$$ L = 1 ab $$^{-1}$$ - 1 at a center-of-mass energy of 3.773 GeV at a future Super Tau Charm Facility. More than 61,000 signals of $$D^{0}\rightarrow K_1(1270)^-e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e are expected. Based on a fast simulation software package, the statistical sensitivity for the ratio of up-down asymmetry is estimated to be $$1.5\times 10^{-2}$$ 1.5 × 10 - 2 by performing a two-dimensional angular analysis in $$D^{0}\rightarrow K_1(1270)^-e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e . Combining with measurements of up-down asymmetry in $$B\rightarrow K_1\gamma $$ B → K 1 γ , the photon polarisation in $$b\rightarrow s\gamma $$ b → s γ can be determined model-independently. |
| format |
article |
| author |
Yu-Lan Fan Xiao-Dong Shi Xiao-Rong Zhou Liang Sun |
| author_facet |
Yu-Lan Fan Xiao-Dong Shi Xiao-Rong Zhou Liang Sun |
| author_sort |
Yu-Lan Fan |
| title |
Feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF |
| title_short |
Feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF |
| title_full |
Feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF |
| title_fullStr |
Feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF |
| title_full_unstemmed |
Feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ D 0 → K 1 ( 1270 ) - e + ν e at STCF |
| title_sort |
feasibility study of measuring $$b\rightarrow s\gamma $$ b → s γ photon polarisation in $$d^0\rightarrow k_1(1270)^- e^+\nu _e$$ d 0 → k 1 ( 1270 ) - e + ν e at stcf |
| publisher |
SpringerOpen |
| publishDate |
2021 |
| url |
https://doaj.org/article/3faae47a8e0046a6a203c685b5df2231 |
| work_keys_str_mv |
AT yulanfan feasibilitystudyofmeasuringbrightarrowsgammabsgphotonpolarisationind0rightarrowk11270enued0k11270eneatstcf AT xiaodongshi feasibilitystudyofmeasuringbrightarrowsgammabsgphotonpolarisationind0rightarrowk11270enued0k11270eneatstcf AT xiaorongzhou feasibilitystudyofmeasuringbrightarrowsgammabsgphotonpolarisationind0rightarrowk11270enued0k11270eneatstcf AT liangsun feasibilitystudyofmeasuringbrightarrowsgammabsgphotonpolarisationind0rightarrowk11270enued0k11270eneatstcf |
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