41,460 research outputs found
Parton shower contributions to jets from high rapidities at the LHC
We discuss current issues associated with the dependence of jet distributions
at the LHC on the behavior of QCD parton showers for high rapidities.Comment: Contribution at DIS2012, Univ. of Bonn, March 201
Z boson production in proton-lead collisions at the LHC accounting for transverse momenta of initial partons
We perform a calculation of inclusive boson production in proton-lead
collisions at the LHC taking into account the transverse momenta of the initial
partons. We use the framework of -factorization combining transverse
momentum dependent parton distributions (TMDs) with off-shell matrix elements.
In order to do it we need to construct appropriate TMDs for lead nuclei which
is done using the parton branching method. Our computations are compared with
data from CMS taken at TeV. The results are in good agreement
with the measurements especially the transverse momentum distribution of the
boson.Comment: 17 pages, 12 figure
Absolute differential cross sections for electron-impact excitation of CO near threshold: II. The Rydberg states of CO
Absolute differential cross sections for electron-impact excitation of Rydberg states of CO have been measured from threshold to 3.7 eV above threshold and for scattering angles between 20° and 140°. Measured excitation functions for the b 3Σ+, B 1Σ+ and E 1π states are compared with cross sections calculated by the Schwinger multichannel method. The behaviour of the excitation functions for these states and for the j 3Σ+ and C 1Σ+ states is analysed in terms of negative-ion states. One of these resonances has not been previously reported
‘My Business is All About Love and Care’: Korean Female Immigrant Entrepreneurship in Sydney
This paper reports on a study of Korean immigrant women to examine various personal, social, economic and cultural aspects of their entrepreneurial activities in Australia. Based on in-depth interviews, findings suggest that women’s decision to start business was greatly affected by a complex interaction between push and pull factors; that their performance in the business were often constrained by a lack of support and resources as well as traditional gender role; and that doing business empowered the women, helping improve financial, social and/or psychological independence. These findings, although generated from a small sample, will contribute to a better understanding of the intersection of gender, ethnicity and entrepreneurship
Calculation of the Z+jet cross section including transverse momenta of initial partons
We perform calculations of Z+jet cross-section taking into account the
transverse momenta of the initial partons. Transverse Momentum Dependent (TMD)
parton densities obtained with the Parton Branching method are used and higher
order corrections are included via TMD parton showers in the initial state. The
predictions are compared to measurements of forward Z+jet production of the
LHCb collaboration at TeV. We show that the results obtained in
kT-factorization are in good agreement with results obtained from a NLO
calculation matched with traditional parton showers. We also demonstrate that
in the forward rapidity region, kT-factorization and hybrid factorization
predictions agree with each other.Comment: 16 pages, 8 figure
Quiescent X-Ray/Optical Counterparts of the Black Hole Transient H 1705-250
We report the result of a new Chandra observation of the black hole X-ray
transient H 1705-250 in quiescence. H 1705-250 was barely detected in the new
50 ks Chandra observation. With 5 detected counts, we estimate the source
quiescent luminosity to be Lx~9.1e30 erg/s in the 0.5-10 keV band (adopting a
distance of 8.6 kpc). This value is in line with the quiescent luminosities
found among other black hole X-ray binaries with similar orbital periods. By
using images taken with the Faulkes Telescope North, we derive a refined
position of H 1705-250. We also present the long-term lightcurve of the optical
counterpart from 2006 to 2012, and show evidence for variability in quiescence.Comment: 5 pages, 2 figures; Accepted for publication in MNRA
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