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PDF profiling using the forward-backward asymmetry in Neutral Current Drell-Yan production
(Springer, 2019-10-15)
Non-perturbative QCD effects from Parton Distribution Functions (PDFs) may be constrained by using high-statistics Large Hadron Collider (LHC) data. Drell-Yan (DY) measurements in the Charged Current (CC) case provide one ...
Evidence for B+ -> h(c)K(+) and observation of eta(c()2S) -> p(p)over-bar pi(+)pi(-)
(American Physical Society, 2019-07-10)
A search for the decays B+ -> h(c)K(+) and B-0 -> h(c)K(S)(0) is performed. Evidence for the decay B+ -> h(c)K(+) is found; its significance is 4.8 sigma. No evidence is found for B-0 -> h(c)K(S)(0). The branching fraction ...
Search for X(3872) and X(3915) decay into chi(c1)pi(0) in B decays at Belle
(American Physical Society, 2019-06-12)
We report a search for X(3872) and X(3915) in B+ ->chi(c1)pi K-0(+) decays. We set an upper limit of B(B+ -> X(3872)K+) x B(X(3872) -> chi(c1)pi(0)) < 8.1 x 10(-6) and B(B+ -> X(3915)K+) x B(X(3915) -> chi(c1)pi(0)) < 3.8 ...
Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation
(Springer, 2019-06-04)
We present the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed O(1/Q(2) terms in the Wandzura-Wilczek-type approximation, which consists ...
First measurement of the CKM angle ϕ3 with B±→ D(K0S π+π−π0) K± decays
(Springer, 2019-10-16)
We present the first model-independent measurement of the CKM unitarity triangle angle phi(3) using B-+/--> D(K-S(0)pi(+)pi(-)pi(0)) K-+/- decays, where D indicates either a D-0 or (D) over bar (0) meson. Measurements of ...
An Exact Approach to Elimination of Leakage in a Qubit Embedded in a Three-level System
(Nature, 2019-07-30)
Leakage errors damage a qubit by coupling it to other levels. Over the years, several theoretical approaches to dealing with such errors have been developed based on perturbation arguments. Here we propose a different ...
Observation of a new structure near 10.75 GeV in the energy dependence of the e+e−→ ϒ (nS)π+π− (n = 1, 2, 3) cross sections
(Springer, 2019-10-22)
We report a new measurement of the e(+)e(-)-> Upsilon(nS)pi(+)pi(-) (n = 1, 2, 3) cross sections at energies from 10.52 to 11.02 GeV using data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) ...
Beam-helicity asymmetries for single-hadron production in semi-inclusive deep-inelastic scattering from unpolarized hydrogen and deuterium targets
(Elsevier, 2019-10-10)
A measurement of beam-helicity asymmetries for single-hadron production in deep-inelastic scattering is presented. Data from the scattering of 27.6 GeV electrons and positrons off gaseous hydrogen and deuterium targets ...
On polarized scattering equations for superamplitudes of 11D supergravity and ambitwistor superstring
(Springer, 2019-11-14)
We revisited the formalism of 110 polarized scattering equation by Geyer and Mason from the perspective of spinor frame approach and spinor moving frame formulation of the 110 ambitwistor superstring action. In particular, ...
Azimuthal asymmetries of back-to-back π±−(π0, η, π±) pairs in e+e− annihilation
(American Physical Society, 2019-11-27)
This work reports the first observation of azimuthal asymmetries around the thrust axis in e(+)e(-) annihilation of pairs of back-to-back charged pions in one hemisphere, and pi(0) and eta mesons in the opposite hemisphere. ...