C. Frei

collaborators

3 papers

math.NT2026

Rational integers as sums of units -- the quadratic case

Christopher Frei, Martin Widmer, Volker Ziegler

How many natural numbers below $X$ can be written as a sum of $k$ units of the ring of integers of a given number field? We give the asymptotics as $X$ gets large for quadratic num…

hep-ex2025

Measurement of the $I^_{c}^{+}$ to $D^{0}$ production cross-section ratio in peripheral PbPb collisions

LHCb collaboration

We report on a measurement of the $I^_{c}^{+}$ to $D^{0}$ production ratio in PbPb collisions at $s_{NN}$ = 5.02 TeV with the LHCb detector in the forward rapidity region $2 <y…

hep-ex2025

Study of $\itÎ_{\it{b}}^\rm{0}$ and $\itÎ_{\it{b}}^\rm{0}$ decays to $I^ h^{+} h^{^{'} -}$ and evidence for $C P$ violation in $\itÎ_{\it{b}}^\rm{0}\to\itÎ K^+K^-$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1134

A study of $\itÎ_{\it{b}}^\rm{0}$ and $\itÎ_{\it{b}}^\rm{0}$ decays to $I^ h^{+} h^{' -}$ $(h^{(')} = I ¨ , K)$ is performed using $pp$ collision data collected by the L…

Rational integers as sums of units -- the quadratic case

Measurement of the I^c+​ to D0 production cross-section ratio in peripheral PbPb collisions

Study of $\itÎ_{\it{b}}^\rm{0}$ and $\itÎ_{\it{b}}^\rm{0}$ decays to I^h+h′− and evidence for CP violation in $\itÎ_{\it{b}}^\rm{0}\to\itÎ K^+K^-$ decays

Measurement of the $I^_{c}^{+}$ to $D^{0}$ production cross-section ratio in peripheral PbPb collisions

Study of $\itÎ_{\it{b}}^\rm{0}$ and $\itÎ_{\it{b}}^\rm{0}$ decays to $I^ h^{+} h^{^{'} -}$ and evidence for $C P$ violation in $\itÎ_{\it{b}}^\rm{0}\to\itÎ K^+K^-$ decays