York‐Peng Yao

Search for nonresonant new physics signals in high-mass dilepton events produced in association with b-tagged jets in proton-proton collisions at $$\sqrt{s}=13$$ TeV

V. Chekhovsky, A. Hayrapetyan, V. Makarenko, A. Tumasyan et autres

am, at, us, be, br (code pays fourni par la source)

Observation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mi>Z</mml:mi> </mml:mrow> </mml:math> Production at the CMS Experiment

Anonymous, I. Ovtin, A. Tumasyan, W. Adam et autres

The first observation of single top quark production in association with a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>W</a:mi> </a:math> and a <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mi>Z</c:mi> </c:math> boson in proton-proton collisions is reported. The analysis uses data at center-of-mass energies of 13 and 13.6 TeV …

am, at, us, be, br (code pays fourni par la source)

Precision measurement of forward Z boson production in proton-proton collisions at $$ \sqrt{\mathrm{s}} $$ = 13 TeV

R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres

Abstract A precision measurement of theZboson production cross-section at $$ \sqrt{\mathrm{s}} $$ s = 13 TeV in the forward region is presented, usingppcollision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.1 fb−1. The production cross-section is measured …

fr (code pays fourni par la source)

First measurement of the $CP$-violating phase $φ_s^{d\overline{d}}$ in $B_s^0\to(K^+π^-)(K^-π^+)$ decays

R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni et autres

A flavour-tagged decay-time-dependent amplitude analysis of $B_s^0\to(K^+\pi^-)(K^-\pi^+)$ decays is presented in the $K^{\pm}\pi^{\mp}$ mass range from 750 to 1600 MeV$/c^2$. The analysis uses $pp$ collision data collected with the LHCb detector at centre-of-mass energies of $7$ and $8$ TeV, corresponding to an …

Observation of the doubly charmed baryon $\Xi_{cc}^{++}$ : arXiv

R. Aaij, W. Kucewicz, S. Sridharan, S. Bachmann et autres

Search for the Decays B[superscript 0][subscript s]→τ+τ− and B[superscript 0]→τ+τ−

R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni et autres

Evaluation of the Cachazo-He-Yuan gauge amplitude

C. S. Lam, York‐Peng Yao

The Cachazo-He-Yuan (CHY) formula for $n$-gluon scattering is known to give the same amplitude as the one obtained from Feynman diagrams, though the former contains neither vertices nor propagators explicitly. The equivalence was shown by indirect means, not by a direct evaluation …

ca, us (code pays fourni par la source)

Role of Möbius constants and scattering functions in Cachazo-He-Yuan scalar amplitudes

C. S. Lam, York‐Peng Yao

The integration over the M\"obius variables leading to the Cachazo-He-Yuan double-color $n$-point massless scalar amplitude are carried out one integral at a time. M\"obius invariance dictates the final amplitude to be independent of the three M\"obius constants ${\ensuremath{\sigma}}_{r},{\ensuremath{\sigma}}_{s},{\ensuremath{\sigma}}_{t}$, but their choice affects …

ca, us (code pays fourni par la source)

Off-shell CHY amplitudes

C. S. Lam, York‐Peng Yao

The Cachazo–He–Yuan (CHY) formula for on-shell scattering amplitudes is extended off-shell. The off-shell amplitudes (amputated Green's functions) are Möbius invariant, and have the same momentum poles as the on-shell amplitudes. The working principles which drive the modifications to the scattering equations are …

ca, us (code pays fourni par la source)

The Scattering Equations and Their Off-Shell Extension

York‐Peng Yao

us (code pays fourni par la source)

The scattering equations and their off-shell extension

York‐Peng Yao

us (code pays fourni par la source)

Off-Shell CHY Amplitudes

C. S. Lam, York‐Peng Yao

The Cachazo-He-Yuan (CHY) formula for on-shell scattering amplitudes are extended off-shell. The off-shell amplitudes are Möbius invariant, and have the same momentum poles as the on-shell amplitudes. The same technique is also used to obtain off-shell massive scalar and vector boson amplitudes.

ca, us (code pays fourni par la source)