Search for long lived charged massive particles in pp collisions at s-hat = 1.8TeV

We report a search for the production of long-lived charged massive particles in a data sample of 90   pb-1 of √s=1.8   TeV pp̅ collisions recorded by the Collider Detector at Fermilab. The search uses the muonlike penetration and anomalously high ionization energy loss signature expected for such a particle to discriminate it from backgrounds. The data are found to agree with background expectations, and cross section limits of O(1) pb are derived using two reference models, a stable quark and a stable scalar lepton

Cross sections for nu(mu) and (nu)over-bar(mu) induced pion production on hydrocarbon in the few-GeV region using MINERvA

Separate samples of charged-current pion production events representing two semi-inclusive channels nu(mu)-CC(pi(+)) and (nu) over bar (mu) -CC(pi(0)) have been obtained using neutrino and antineutrino exposures of the MINERvA detector. Distributions in kinematic variables based upon mu(+/-)-track reconstructions are analyzed and compared for the two samples. The differential cross sections for muon production angle, muon momentum, and four-momentum transfer Q(2) are reported, and cross sections versus neutrino energy are obtained. Comparisons with predictions of current neutrino event generators are used to clarify the role of the Delta(1232) and higher-mass baryon resonances in CC pion production and to show the importance of pion final-state interactions. For the nu(mu)-CC(pi(+)) [(nu) over bar (mu)-(pi(0))] sample, the absolute data rate is observed to lie below (above) the predictions of some of the event generators by amounts that are typically 1-to- 2 sigma. However the generators are able to reproduce the shapes of the differential cross sections for all kinematic variables of either data set

Search for Doubly-Charged Higgs Bosons Decaying to Dileptons in proton anti-proton Collisions at s**(1/2) = 1.96 TeV

We present the results of a search for doubly charged Higgs bosons (H±±) decaying to dileptons (ll′) using ≈240  pb-1 of pp̅ collision data collected by the CDF II experiment at the Fermilab Tevatron. In our search region, given by same-sign ll′ mass mll′>80  GeV/c2 (100  GeV/c2 for ee channel), we observe no evidence for H±± production. We set limits on σ(pp̅ →H++H--→l+l′+l-l′-) as a function of the mass of the H±± and the chirality of its couplings. Assuming exclusive same-sign dilepton decays, we derive lower mass limits on HL±± of 133, 136, and 115  GeV/c2 in the ee, μμ, and eμ channels, respectively, and a lower mass limit of 113  GeV/c2 on HR±± in the μμ channel, all at the 95% confidence level

Charged pion production in nu(mu) interactions on hydrocarbon at \u3c E-nu \u3e=4.0 GeV

Charged pion production via charged-current nu(mu) interactions on plastic scintillator (CH) is studied using the MINERvA detector exposed to the NuMI wideband neutrino beam at Fermilab. Events with hadronic invariant massW \u3c 1.4 GeV and W \u3c 1.8 GeV are selected in separate analyses: the lower W cut isolates single pion production, which is expected to occur primarily through the Delta(1232) resonance, while results from the higher cut include the effects of higher resonances. Cross sections as functions of pion angle and kinetic energy are compared to predictions from theoretical calculations and generator-based models for neutrinos ranging in energy from 1.5-10 GeV. The data are best described by calculations which include significant contributions from pion intranuclear rescattering. These measurements constrain the primary interaction rate and the role of final state interactions in pion production, both of which need to be well understood by neutrino oscillation experiments

Identification, Motivation and Facilitation of Domestic Tourism in a Small Island

This paper presents a case concerning domestic tourism in the Isle of Man, British Isles; a small maritime nation with Norse heritage. Qualitative interviews find the existence of considerable domestic tourism activity conducted by island residents, including daytrips and overnight stays, and explore the motivational and facilitating factors which underpin this. Such behaviour is identified by residents as touristic and distinct from other leisure pursuits. Yet recognition of domestic tourism in small geographic spaces is currently almost entirely absent. This article attempts to highlight the issue and draw attention to attendant benefits of domestic tourism which include economic and social inputs. These may be relevant to a small island community, and in the case of the Isle of Man help to support an otherwise ailing tourism industry

Combination of Tevatron Searches for the Standard Model Higgs Boson in the W(+)W(−) Decay Mode

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.104.061802.We combine searches by the CDF and D0 Collaborations for a Higgs boson decaying to W(+)W(−). The data correspond to an integrated total luminosity of 4.8 (CDF) and 5.4 (D0) fb(−1) of pp-bar collisions at s√=1.96  TeV at the Fermilab Tevatron collider. No excess is observed above background expectation, and resulting limits on Higgs boson production exclude a standard model Higgs boson in the mass range 162–166 GeV at the 95% C.L