N′-(3-Bromo-4-methoxy­benzyl­idene)nicotinohydrazide monohydrate

In the title compound, C14H12BrN3O2·H2O, the benzene ring is oriented at a dihedral angle of 39.66 (11)° with respect to the pyridine ring. The solvent water mol­ecule links with the organic compound via O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonding

(9S,13R,14S)-7,8-Didehydro-4-(4-fluoro­benz­yloxy)-3,7-dimeth­oxy-17-methyl­morphinan-6-one sesquihydrate

In the title sinomenine derivative, C26H28FNO4·1.5H2O, the dihedral angle between the two aromatic rings is 55.32 (6)°. The N-containing ring has an approximate chair conformation, while other two rings have approximate envelope and half-chair conformations. One water mol­ecule is located on a twofold symmetry axis. In the crystal, the water mol­ecules form O—H⋯O and O—H⋯N hydrogen bonds, bridging symmetry-related main mol­ecules

Relatively large theta13 and nearly maximal theta23 from the approximate S3 symmetry of lepton mass matrices

We apply the permutation symmetry S_3 to both charged-lepton and neutrino mass matrices, and suggest a useful symmetry-breaking scheme, in which the flavor symmetry is explicitly broken down via S_3 -> Z_3 -> nothing in the charged-lepton sector and via S_3 -> Z_2 -> nothing in the neutrino sector. Such a two-stage breaking scenario is reasonable in the sense that both Z_3 and Z_2 are the subgroups of S_3, while Z_3 and Z_2 only have a trivial subgroup. In this scenario, we can obtain a relatively large value of the smallest neutrino mixing angle, e.g., theta_{13} ~ 9^\circ, which is compatible with the recent result from T2K experiment and will be precisely measured in the ongoing Double Chooz and Daya Bay reactor neutrino experiments. Moreover, the maximal atmospheric mixing angle theta_{23} ~ 45^\circ can also be obtained while the best-fit value of solar mixing angle theta_{12} ~ 34^\circ is assumed, which cannot be achieved in previous S_3 symmetry models.Comment: 15 pages, no figures, minor changes, matches the published versio

Neutrino Decays and Neutrino Electron Elastic Scattering in Unparticle Physics

Following Georgi's unparticle scheme, we examine the effective couplings between neutrinos and unparticle operators. As an immediate consequence, neutrinos become unstable and can decay into the unparticle stuff. Assuming the dimension transmutation scale is around $\Lambda^{}_{\cal U} \sim 1 ~{\rm TeV}$, we implement the cosmological limit on the neutrino lifetime to constrain the neutrino-unparticle couplings for different scaling dimensions $d$. In addition, provided that the electron-unparticle coupling is restricted due to the precise measurement of the anomalous magnetic moment of electron, we calculate the unparticle contribution to the neutrino-electron elastic scattering. It is more important to jointly deal with the couplings of the unparticle to the standard model particles rather than separately. Taking into account both electron- and neutrino-unparticle couplings, we find that the scaling dimension of the scalar unparticle should lie in the narrow range $1 < d < 2$ by requiring the observables to be physically meaningful. However, there is no consistent range of $d$ for the vector unparticle operator.Comment: 10 pages including 2 PS figures; v2: an error removed and the text rewritten; v3: minor changes, accepted for publication in Phys. Lett.

(7R,8S,9S,12S)-1-(4-Chloro­benz­yloxy)-13,14-didehydro-12-hy­droxy-2,13-dimeth­oxy-N-methyl­morphinane

The title compound, C26H30ClNO4, a sinomenine derivative, has five six-membered rings, two of which are aromatic, with a dihedral angle of 34.13 (20)° between these. The N-containing ring and the fourth ring exhibit chair conformations, while the fifth ring approximates an envelope conformation. A single inter­molecular O—H⋯N hydrogen-bonding inter­action gives a one-dimensional chain structure which extends along the a axis. The absolute configuration for the mol­ecule has been determined

(7R,8S,9S,12S)-1-Benz­yloxy-13,14-didehydro-12-hy­droxy-2,13-dimeth­oxy-N-methyl­morphinane

In the title compound, C26H31NO4, a sinomenine derivative, the angle between the two aromatic rings is 53.34 (4)°. The N-containing ring is in a chair conformation, while the other two non-planar rings are in a half-boat conformation. In the crystal, mol­ecules are linked by O—H⋯N inter­actions into a C(8) chain along [100]

Neutrino Physics with JUNO

The Jiangmen Underground Neutrino Observatory (JUNO), a 20 kton multi-purposeunderground liquid scintillator detector, was proposed with the determinationof the neutrino mass hierarchy as a primary physics goal. It is also capable ofobserving neutrinos from terrestrial and extra-terrestrial sources, includingsupernova burst neutrinos, diffuse supernova neutrino background, geoneutrinos,atmospheric neutrinos, solar neutrinos, as well as exotic searches such asnucleon decays, dark matter, sterile neutrinos, etc. We present the physicsmotivations and the anticipated performance of the JUNO detector for variousproposed measurements. By detecting reactor antineutrinos from two power plantsat 53-km distance, JUNO will determine the neutrino mass hierarchy at a 3-4sigma significance with six years of running. The measurement of antineutrinospectrum will also lead to the precise determination of three out of the sixoscillation parameters to an accuracy of better than 1\%. Neutrino burst from atypical core-collapse supernova at 10 kpc would lead to ~5000inverse-beta-decay events and ~2000 all-flavor neutrino-proton elasticscattering events in JUNO. Detection of DSNB would provide valuable informationon the cosmic star-formation rate and the average core-collapsed neutrinoenergy spectrum. Geo-neutrinos can be detected in JUNO with a rate of ~400events per year, significantly improving the statistics of existing geoneutrinosamples. The JUNO detector is sensitive to several exotic searches, e.g. protondecay via the $p\to K^++\bar\nu$ decay channel. The JUNO detector will providea unique facility to address many outstanding crucial questions in particle andastrophysics. It holds the great potential for further advancing our quest tounderstanding the fundamental properties of neutrinos, one of the buildingblocks of our Universe