Results 121 to 130 of about 423,687 (279)

Heavy quarks in deeply virtual Compton scattering

, 2003
A detailed study of the heavy quark h=c,b,... contributions to deeply virtual Compton scattering is performed at both the amplitude and the cross section level, and their phenomenological relevance is discussed.
A. Airapetian, A. Denner, A. Denner, A. Freund, A. Freund, A. Freund, A. Freund, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Belitsky, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, B. W. Harris, B. W. Harris, C. Adloff, C. Adloff, D. Müller, E. Witten, G. Passarino, G. ’t Hooft, H. L. Lai, I. Schienbein, J. C. Collins, J. C. Collins, J. C. Collins, J. D. Noritzsch, Jens D. Noritzsch, L. Mankiewicz, L. Mankiewicz, M. Burkardt, M. Burkardt, M. Buza, M. Diehl, M. Diehl, M. Glück, M. Glück, M. Glück, M. Glück, M. Jamin, N. Kivel, P. Hoodbhoy, S. Chekanov, S. Chekanov, S. Kretzer, S. Stepanyan, T. Appelquist, V. M. Budnev, X. Ji, X. Ji, X. Ji   +55 more
core   +3 more sources

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

Advanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul, Archith Rayabharam, Lisa Almonte, Eveline Rigo, Joshy Joseph, Ashutosh Kumar, Zhuxin Dong, Narayana Aluru, Gregory Timp   +8 more
wiley   +1 more source

Biopolymer‐Templated Hierarchical 3D‐Structured Gold Nanoparticle/Graphene Oxide Hybrid Materials for Ultrasensitive Surface‐Enhanced Raman Scattering

Advanced Functional Materials, EarlyView.
A scalable bio‐templated approach using spray‐coating and thermal annealing fabricates cellulose nanofibril (CNF) films loaded with gold nanoparticles (Au NPs) and graphene oxide (GO) hybrids as Surface‐enhanced Raman scattering (SERS) substrates. The 3D CNF network ensures uniform Au NPs distribution, while annealing induces more hotspots, confirmed ...
Yingjian Guo, Guangjiu Pan, Suo Tu, Yusuf Bulut, Jungui Zhou, Arno Jeromin, Thomas F. Keller, Andreas Stierle, Gergely Nemeth, Ferenc Borondics, Benedikt Sochor, Sarathlal Koyiloth Vayalil, L. Daniel Söderberg, Peter Müller‐Buschbaum, Stephan V. Roth   +14 more
wiley   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Low energy proton-proton scattering in effective field theory

, 2007
Low energy proton-proton scattering is studied in pionless effective field theory. Employing the dimensional regularization and MS-bar and power divergence subtraction schemes for loop calculation, we calculate the scattering amplitude in 1S0 channel up ...
Chang Ho Hyun, Charles J. Joachain, Jae Won Shin, S. R. Beane, Seung-Woo Hong, Shung-ichi Ando   +5 more
core   +1 more source

Holographic Scattering Amplitudes

, 2017
Inspired by ancient astronomy, we propose a holographic description of perturbative scattering amplitudes, as integrals over a `celestial sphere'. Since Lorentz invariance, local interactions, and particle propagations all take place in a four-dimensional space-time, it is not trivial to accommodate them in a lower-dimensional `celestial sphere'.
openaire   +2 more sources

Stabilizing Cationic Palladium Single‐Atom Sites on Heteroatom‐Doped Carbon for Selective Hydrogen Peroxide Electrosynthesis

Advanced Functional Materials, EarlyView.
In this research, it is demonstrated that dual nitrogen and sulfur doping in hollow carbon spheres creates a tunable coordination environment that stabilizes cationic Pd single atoms as robust organometallic complexes, enabling high selectivity and stability for electrochemical hydrogen peroxide production under harsh acidic and peroxide‐rich ...
Guilherme V. Fortunato, Alexander Gunnarson, Hannaneh Hosseini, Xiangyu You, Pallabi Bhuyan, Ji Sik Choi, Hyo Sang Jeon, Xingshen Zhao, Julio C. Lourenço, Sumin Lim, Huize Wang, Ana Guilherme Buzanich, Martin Radtke, Paul Paciok, Marcos R.V. Lanza, Ferdi Schüth, Marc Ledendecker   +16 more
wiley   +1 more source

Scattering Amplitudes from Intersection Theory [PDF]

Physical Review Letters, 2018
We use Picard-Lefschetz theory to prove a new formula for intersection numbers of twisted cocycles associated to a given arrangement of hyperplanes. In a special case when this arrangement produces the moduli space of punctured Riemann spheres, intersection numbers become tree-level scattering amplitudes of quantum field theories in the Cachazo-He-Yuan
openaire   +3 more sources

Ultrahigh‐Yield, Multifunctional, and High‐Performance Organic Memory for Seamless In‐Sensor Computing Operation

Advanced Functional Materials, EarlyView.
Molecular engineering of a nonconjugated radical polymer enables a significant enhancement of the glass transition temperature. The amorphous nature and tunability of the polymer, arising from its nonconjugated backbone, facilitates the fabrication of organic memristive devices with an exceptionally high yield (>95%), as well as substantial ...
Daeun Kim, Jaehyoung Ko, Namju Kim, Quynh H. Nguyen, Hoyeon Lee, Joohwan Eo, Seongeon Jin, Ji Eon Kwon, Seung‐Yeol Jeon, Youngdo Jeong, Dongseok Kwon, Sung Gap Im, Sanghan Lee, Byung Chul Jang, Yongho Joo   +14 more
wiley   +1 more source

Vector meson electroproduction at next-to-leading order

, 2004
The process of a light neutral vector meson electroproduction is studied in the framework of QCD factorization in which the amplitude factorizes in a convolution of the nonperturbative meson distribution amplitude and the generalized parton densities ...
A. D. Martin, A. V. Belitsky, D. Yu. Ivanov, D. Yu. Ivanov, E. V. Kuraev, E. V. Shuryak, G. Krasnikov, J. Breitweg, J. C. Collins, J. Nemchik, J. Nemchik, L. Mankiewicz, L. Szymanowski, M. Diehl, M. G. Ryskin, N. N. Nikolaev, S. J. Brodsky   +16 more
core   +1 more source