Measurements of inclusive spectra and mean multiplicities of [equation], K[equation], p and [equation]produced in inelastic p + p interactions at incident projectile momenta of 20, 31, 40, 80 and...

Measurements of hadron production in p + C interactions at 31 GeV/ care performed using the NA61/SHINE spectrometer at the CERN SPS. The analysis is based on the full set of data collected in 2009...

The two-particle momentum correlation functions between charm mesons (${\mathrm{D}}^{*\pm }$ and ${\mathrm{D}}^{\pm }$) and charged light-flavor mesons (${\pi }^{\pm }$ and ${\mathrm{K}}^{\pm }$) in all charge combinations are measured for the first time by the ALICE Collaboration in high-multiplicity proton–proton collisions at a center-of-mass energy of $\sqrt{s}=13\mathrm{TeV}$. For DK and ${\mathrm{D}}^{*}\mathrm{K}$ pairs, the experimental results are in agreement with theoretical predictions of the residual strong interaction based on quantum chromodynamics calculations on the lattice and chiral effective field theory. In the case of $\mathrm{D}\pi$ and ${\mathrm{D}}^{*}\pi$ pairs, tension between the calculations including strong interactions and the measurement is observed. For all particle pairs, the data can be adequately described by Coulomb interaction only, indicating a shallow interaction between charm and light-flavor mesons. Finally, the scattering lengths governing the residual strong interaction of the $\mathrm{D}\pi$ and ${\mathrm{D}}^{*}\pi$ systems are determined by fitting the experimental correlation functions with a model that employs a Gaussian potential. The extracted values are small and compatible with zero.

Measurements of multiplicity and transverse momentum fluctuations of charged particles were performed in inelastic p+p interactions at 20, 31, 40, 80, and 158 [equation]beam momentum. Results for...

Measurements of particle emission from a replica of the T2K 90 cm-long carbon target were performed in the NA61/SHINE experiment at CERN SPS, using data collected during a high-statistics run in 2009. An efficient use of the long-target measurements for neutrino flux predictions in T2K requires dedicated reconstruction and analysis techniques. Fully-corrected differential yields of \(\pi ^\pm \)-mesons from the surface of the T2K replica target for incoming 31 GeV/c protons are presented. A possible strategy to implement these results into the T2K neutrino beam predictions is discussed and the propagation of the uncertainties of these results to the final neutrino flux is performed.

Measurements of the \(\pi ^\pm \), \(K^\pm \), and proton double differential yields emitted from the surface of the 90-\(\hbox {cm}\)-long carbon target (T2K replica) were performed for the incoming \(31\,\) \(\hbox {GeV}\!/\!c\) protons with the NA61/SHINE spectrometer at the CERN SPS using data collected during 2010 run. The double differential \(\pi ^\pm \) yields were measured with increased precision compared to the previously published NA61/SHINE results, while the \(K^\pm \) and proton yields were obtained for the first time. A strategy for dealing with the dependence of the results on the incoming proton beam profile is proposed. The purpose of these measurements is to reduce significantly the (anti)neutrino flux uncertainty in the T2K long-baseline neutrino experiment by constraining the production of (anti)neutrino ancestors coming from the T2K target.