Abstract
By analyzing 2.93 fb$^{-1}$ of $e^+e^-$ annihilation data taken at the center-of-mass energy $\sqrt s=$ 3.773 GeV with the BESIII detector, we determine the branching fractions of the inclusive decays $D^+\to\phi X$ and $D^0\to\phi X$ to be $(1.135\pm0.034\pm0.031)\%$ and $(1.091\pm0.027\pm0.035)\%$, respectively, where $X$ denotes any possible particle combination. The first uncertainties are statistical and the second systematic. We also determine the branching fractions of the decays $D\to\phi X$ and their charge conjugate modes $\bar{D}\to\phi \bar{X}$ separately for the first time, and no significant CP asymmetry is observed.
Highlights
Experimental studies of the inclusive D → φX decays, where X denotes any possible particle combination, are important for charm physics due to the following reasons
Previous measurements of the branching fractions for inclusive Dþ → φX and D0 → φX decays were made by BES and CLEO [1,2] with 22.3 and 281 pb−1 of eþe− annihpilffiaffi tion data samples taken at the center-of-mass energies s 1⁄4 4.03 and 3.774 GeV, respectively
We report improved measurements of the branching fractions of these inclusive decpayffiffis by using 2.93 fb−1 of eþe− annihilation data taken at s 1⁄4 3.773 GeV with the BESIII detector
Summary
Experimental studies of the inclusive D → φX decays, where X denotes any possible particle combination, are important for charm physics due to the following reasons. Precise measurements of their branching fractions offer an independent check on the existence of unmeasured or overestimated exclusive decays that include a φ meson. We report improved measurements of the branching fractions of these inclusive decpayffiffis by using 2.93 fb−1 of eþe− annihilation data taken at s 1⁄4 3.773 GeV with the BESIII detector. Charge-parity (CP) violation plays an important role in interpreting the matter-antimatter asymmetry in the Universe and in searching for new physics beyond the standard model (SM). It has been well established in the K. We search for CP violation in the inclusive D → φX and D → φX decays
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