论文标题
$ \ mathrm {λ_{c}^{+}} $在pp中和p-pb碰撞中的$ \ sqrt {s _ {s _ {\ rm {nn}}} = 5.02 $ tev $ tev
$\mathrm{Λ_{c}^{+}}$ production in pp and in p-Pb collisions at $\sqrt{s_{\rm {NN}}} = 5.02$ TeV
论文作者
论文摘要
提示$ \ mathrm {λ_{c}^{+}} $魅力baryons的生产横截面与proton-proton（PP）中的LHC的爱丽丝探测器（PP）和Proton-Lead（PP）和Proton-Lead（P-PB）的proton-Mass-Mass Energion collisions collapition测量。 5.02 $ TEV。 $ \ mathrm {λ_{c}^{+}} $和$ \ rm {\ RM {\overlineλ{} _ c^ - } $ baryon是在Hadronic Decay频道中重建的λ_{c}^{+} \ to p k^{0} _ {s} $和相应的电荷连接。测得的微分横截面是横向动量（$ p _ {\ rm t} $）的函数，并且$ p _ {\ rm t} $ - 集成的$ \ mathrm {λ_{c}^{c}^{+}^{+}^{+}^{+}^{+}^{+} $ costal cross in pp in pp in pp in In p-pb碰撞呈现。 $ \ mathrm {λ_{c}^{+}} $核修饰因子（$ r_ \ mathrm {ppb} $），根据pp和p-pb碰撞中的横截面计算出来，与$ r_ \ r_ \ m mathrm {ppb} $相比。还提出了$ \ mathrm {λ_{C}^{+}}/\ Mathrm {d^0} $比率，并与Light-Flavour Baryon-Meson比率P $/π$和$λ/\ Mathrm {k^0_s} $，以及其他LHC实验的测量。将结果与模型计算和蒙特卡洛事件发生器的预测进行了比较。
The production cross section of prompt $\mathrm{Λ_{c}^{+}}$ charm baryons was measured with the ALICE detector at the LHC at midrapidity in proton-proton (pp) and proton-lead (p-Pb) collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}} = 5.02$ TeV. The $\mathrm{Λ_{c}^{+}}$ and $\rm {\overlineΛ{}_c^-}$ baryons were reconstructed in the hadronic decay channels $\rm Λ_{c}^{+} \rightarrow p K^{-}π^{+}$ and $\rm Λ_{c}^{+}\to p K^{0}_{S}$ and respective charge conjugates. The measured differential cross sections as a function of transverse momentum ($p_{\rm T}$) and the $p_{\rm T}$-integrated $\mathrm{Λ_{c}^{+}}$ production cross section in pp and in p-Pb collisions are presented. The $\mathrm{Λ_{c}^{+}}$ nuclear modification factor ($R_\mathrm{pPb}$), calculated from the cross sections in pp and in p-Pb collisions, is presented and compared with the $R_\mathrm{pPb}$ of D mesons. The $\mathrm {Λ_{c}^{+}}/\mathrm {D^0}$ ratio is also presented and compared with the light-flavour baryon-to-meson ratios p$/π$ and $Λ/\mathrm {K^0_S}$, and measurements from other LHC experiments. The results are compared to predictions from model calculations and Monte Carlo event generators.
