论文标题
用老板数据限制腐烂的暗物质和大规模结构的有效现场理论
Constraining decaying dark matter with BOSS data and the effective field theory of large-scale structures
论文作者
论文摘要
根据大型结构（EFTOFLSS）形式主义的有效现场理论分析的Boss-DR12数据，我们对两个腐烂的暗物质模型进行了宇宙学的限制，以及Baryonic声学振荡（BAO）的Planck，Pantheon和其他Boss测量。在第一个模型中，冷暗物质（CDM）的分数$ f _ {\ rm dcdm} $腐烂到了终身$τ$的暗辐射（DR）。在第二个模型（最近被认为是$ s_8 $张力的潜在分辨率）中，所有CDM都以终身$τ$腐烂到DR和大量温暖的暗物质（WDM）粒子，分数$ \ varepsilon $的CDM REST MOSS ENESS的分数转移到了DR上。使用最近文献中的数值代码，我们使用EFTOFLSS对这两个模型进行了第一次计算轻度非线性（物质和星系）功率谱。对于DR产品，我们获得了约束$ f _ {\ rm dcdm} \ LISHSIM0.022 $（95 \％c.l.）的寿命短于宇宙时代，$τ/f _ {\ rm dcdm} \ rm dcdm} \ gtrsim $ gtrsim $ gyr $ gyr。 DCDM} \ TO1 $。我们表明，普朗克数据对这些约束最大，EFTOFBOSS比传统的BAO和RedShift空间扭曲（$fσ_8$）数据提供了边缘改善。对于DR和WDM衰减产品，我们发现Eftofboss数据可显着改善68 \％C.L.的约束。在CDM寿命上，儿童1000的$ S_8 $先验。我们表明，为了适应eftofboss的数据，同时降低$ s_8 $匹配儿童1000，最佳拟合型号具有更长的寿命$τ= 120 $ gyr，具有更大的踢速度$ v _ {\ rm kick}/c \ rm kick}/c \ simeq \ simeq \ simeq \ v var epsilon \ simeq 1.2 $ gyr $ gyr $ gyr， $ \ varepsilon = 0.6 \％$）。我们预计未来的调查将在此类模型上提供精美的限制。
We update cosmological constraints on two decaying dark matter models in light of BOSS-DR12 data analyzed under the Effective Field Theory of Large-Scale Structures (EFTofLSS) formalism, together with Planck, Pantheon and other BOSS measurements of the baryonic acoustic oscillation (BAO). In the first model, a fraction $f_{\rm dcdm}$ of cold dark matter (CDM) decays into dark radiation (DR) with a lifetime $τ$. In the second model (recently suggested as a potential resolution to the $S_8$ tension), all the CDM decays with a lifetime $τ$ into DR and a massive warm dark matter (WDM) particle, with a fraction $\varepsilon$ of the CDM rest mass energy transferred to the DR. Using numerical codes from the recent literature, we perform the first calculation of the mildly non-linear (matter and galaxy) power spectra with the EFTofLSS for these two models. In the case of DR products, we obtain the constraints $f_{\rm dcdm}\lesssim0.022$ (95\% C.L.) for lifetimes shorter than the age of the universe, and $τ/f_{\rm dcdm} \gtrsim 250$ Gyr in the long-lived regime assuming $f_{\rm dcdm}\to1$. We show that Planck data contributes the most to these constraints, with EFTofBOSS providing a marginal improvement over conventional BAO and redshift space distortions ($fσ_8$) data. In the case of DR and WDM decay products, we find that EFTofBOSS data significantly improves the constraints at 68\% C.L. on the CDM lifetime with a $S_8$ prior from KiDS-1000. We show that, in order to fit EFTofBOSS data while lowering $S_8$ to match KiDS-1000, the best-fit model has a longer lifetime $τ= 120$ Gyr, with a larger kick velocity $v_{\rm kick}/c \simeq \varepsilon \simeq 1.2\%$, than that without EFTofBOSS ($τ= 43$ Gyr, $\varepsilon =0.6\%$). We anticipate that future surveys will provide exquisite constraints on such models.
