Gavin Mccance

CERN | CERN · Information Technology Department (IT)

The current tier-0 processing at CERN is done on two managed sites, the CERN computer centre and the Wigner computer centre. With the proliferation of public cloud resources at increasingly competitive prices, we have been investigating how to transparently increase our compute capacity to include these providers. The approach taken has been to int...

By the end of 2016 more than 10 Million core-hours of computing resources have been delivered by several commercial cloud providers to the four LHC experiments to run their production workloads, from simulation to full chain processing. In this paper we describe the experience gained at CERN in procuring and exploiting commercial cloud resources fo...

When CERN migrated its infrastructure away from homegrown fabric management tools to emerging industry-standard open-source solutions, the immediate technical challenges and motivation were clear. The move to a multi-site Cloud Computing model meant that the tool chains that were growing around this ecosystem would be a good choice, the challenge w...

The CERN Data Centre is reviewing strategies for optimizing the use of the existing infrastructure and expanding to a new data centre by studying how other large sites are being operated. Over the past six months, CERN has been investigating modern and widely-used tools and procedures used for virtualisation, clouds and fabric management in order t...

Within the European DataGrid project, Work Package 2 has designed and implemented a set of integrated replica management services for use by data intensive scientific applications. These ser- vices, based on the web services model, enable movement and replication of data at high speed from one geographical site to another, management of distributed...

Storage Services are crucial components of the Worldwide LHC Computing Grid Infrastructure spanning more than 200 sites and serving computing and storage resources to the High Energy Physics LHC communities. Up to tens of Petabytes of data are collected every year by the four LHC experiments at CERN. To process these large data volumes it is import...

The world's largest scientific machine -- the Large Hadron Collider (LHC), situated outside Geneva, Switzerland -- will generate some 15PB of data at rates up to 1.5GB/s (in the case of the heavy-ion experiment, ALICE) to tape per year of operation. The processing of this data will be performed using a world-wide Grid, the (worldwide) LHC Computing...

Distributed management of data is one of the most important problems facing grids. Within the Enabling Grids for Enabling eScience (EGEE) project, currently the world's largest production grid, a sophisticated hierarchy of data management and storage tools have been developed to help Virtual Organisations (VOs) with this task. In this paper we revi...

Grid infrastructures require a high degree of fault tolerance and reliability. This can only be achieved by careful planning and detailed implementation. We describe on-going work within the WLCG project to build and run highly reliable services. Following the "a priori" analysis based on the services and service levels listed in the Memorandum of...

In this paper we describe the basic concepts for data storage, access and cataloguing in the EU Enabling Grids for E-SciencE project's middleware named gLite. In the gLite middleware stack, the data management functionality is provided by a set of services. The design of these services is driven by the principles of interoperability, portability, m...

Within the European DataGrid project, Work Package 2 has designed and im- plemented a set of integrated replica management services for use by data intensive scientic applications. These services, based on the web services model, enable movement and replication of data at high speed from one geographical site to another, management of distributed r...

SAM was developed as a data handling system for Run II at Fermilab. SAM is a collection of services, each described by metadata. The metadata are modeled on a relational database, and implemented in ORACLE. SAM, originally deployed in production for the D0 Run II experiment, has now been also deployed at CDF and is being commissioned at MINOS. This...

Cross sections for e−p charged current deep inelastic scattering have been measured at a centre-of-mass energy of 318 GeV with an integrated luminosity of 16.4 pb−1 using the ZEUS detector at HERA. Differential cross sections dσ/dQ2, dσ/dx and dσ/dy are presented for Q2>200 GeV2. In addition, d2σ/(dxdQ2) was measured in the kinematic range and 0.01...

this article are as follows:

this article) is now in its third and final year and within the data management work package we have developed a second generation of data management services that will be deployed in EDG release 2.x. Our first generation replication tools (GDMP, edgreplica -manager etc.) provided a very good base and input and we reported on the experience in [13,...

We describe the architecture and initial implementation of the next-generation of Grid Data Management Middleware in the EU DataGrid (EDG) project. The new architecture stems out of our experience and the users requirements gathered during the two years of running our initial set of Grid Data Management Services. All of our new services are based o...

Many Data Grid services maintain persistent metadata in remote relational databases.

Cross sections for e(-)p neutral current deep inelastic scattering have been measured at a centre-of-mass energy of 318 GeV using an integrated luminosity of 15.9 pb(-1) collected with the ZEUS detector at HERA. Results on the double- differential cross-section d(2)sigma/dx dQ(2) in the range 185 lt Q(2) lt 50 000 GeV2 and 0.0037 lt x lt 0.75, as w...

The azimuthal distribution of jets produced in the Breit frame in high-Q2 deep inelastic e+p scattering has been studied with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb−1. The measured azimuthal distribution shows a structure that is well described by next-to-leading-order QCD predictions over the Q2 range considered, Q2>12...

Data management systems are central to many applications across multiple domains, and play a significant role in many others. Web services provide implementation neutral facilities for describing, invoking and orchestrating collections of networked resources. The Open Grid Services Architecture (OGSA) extends Web Services with consistent interfaces...

Diffractive photoproduction of vector mesons, gammap → VY, where Y is a proton-dissociative system, has been measured in e(+)p interactions with the ZEUS detector at HERA using an integrated luminosity of 25 pb(-1). The differential cross section, dsigma/dt, is presented for 1.2 lt -t lt 12 GeV2, where t is the square of the four-momentum transferr...

Searches in ep collisions for heavy excited fermions have been performed with the ZEUS detector at HERA. Excited states of electrons and quarks have been searched for in e+p collisions at a centre-of-mass energy of 300 GeV using an integrated luminosity of 47.7 pb−1. Excited electrons have been sought via the decays e∗→eγ, e∗→eZ and e∗→νW. Excited...

Inclusive jet differential cross sections have been measured in neutral current deep inelastic e+p scattering for boson virtualities Q2>125 GeV2. The data were taken using the ZEUS detector at HERA and correspond to an integrated luminosity of 38.6 pb−1. Jets were identified in the Breit frame using the longitudinally invariant kT cluster algorithm...

Diffractive production of D(*+/-)(2010) mesons in deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 44.3 pb(-1). Diffractive charm production is identified by the presence of a large rapidity gap in the final state of events in which a D(*+/-) (2010) meson is reconstructed in the decay chan...

The production of neutrons carrying at least 20% of the proton beam energy () in e+p collisions has been studied with the ZEUS detector at HERA for a wide range of Q2, the photon virtuality, from photoproduction to deep inelastic scattering. The neutron-tagged cross section, ep→e′Xn, is measured relative to the inclusive cross section, ep→e′X, ther...

A search has been made for lepton-flavor-violating interactions of the type e(+)p→lX, where l denotes a mu or tau with high transverse momentum, at a center-of-mass energy roots of 300 GeV with an integrated luminosity of 47.7 pb(-1) using the ZEUS detector at HERA. No evidence was found for lepton-flavor violation and constraints were derived on l...

The photon–proton total cross section has been measured in the process e+p→e+γp→e+X with the ZEUS detector at HERA. Events were collected with photon virtuality Q2<0.02 GeV2 and average γp center-of-mass energy Wγp=209 GeV in a dedicated run, designed to control systematic effects, with an integrated luminosity of 49 nb−1. The measured total cross...

Characteristics of the hadronic final state of diffractive deep inelastic scattering events ep⃗eXp were studied in the kinematic range 4<MX<35GeV, 4<Q2<150GeV2, 70<W<250GeV, and 0.0003<xP<0.03 with the ZEUS detector at the DESY ep collider HERA using an integrated luminosity of 13.8 pb-1. The events were tagged by identifying the diffractively scat...

Dijet differential cross sections for the reaction in the photoproduction regime have been measured with the ZEUS detector at HERA using an integrated luminosity of 42.7 pb−1. The cross sections are given for photon–proton centre-of-mass energies in the range 134<W<277 GeV. The differential cross sections as a function of the dijet mass, Mjj, and o...

Characteristics of the hadronic final state of diffractive deep inelastic scattering events ep to eXp were studied in the kinematic range 4 lt M/sub X/ lt 35 GeV, 4 lt Q/sup 2/ lt 150 GeV/sup 2/, 70 lt W lt 250 GeV, and 0.0003 lt x/sub lt P/ lt 0.03 with the ZEUS detector at the DESY ep collider HERA using an integrated luminosity of 13.8 pb/sup -1...

Three-jet production in the reaction ep to eXp has been studied with the ZEUS detector at HERA using an integrated luminosity of 42.74 pb/sup -1/. The data were measured in the kinematic region 5 lt Q/sup 2/ lt 100 GeV/sup 2/, 200 lt W lt 250 GeV and 23 lt M/sub X/ lt 40 GeV. The diffractive signal was selected by requiring a large rapidity gap in...

Dijet production has been studied in neutral current deep inelastic e+p scattering for with the ZEUS detector at HERA using an integrated luminosity of 38.4 pb−1. Dijet differential cross sections are presented in a kinematic region where both theoretical and experimental uncertainties are small. Next-to-leading-order (NLO) QCD calculations describ...

Multiplicity moments of charged particles in deep inelastic e+p scattering have been measured with the ZEUS detector at HERA using an integrated luminosity of 38.4 pb−1. The moments for Q2>1000 GeV2 were studied in the current region of the Breit frame. The evolution of the moments was investigated as a function of restricted regions in polar angle...

The photoproduction of prompt photons, together with an accompanying jet, has been measured with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb−1. A study of the effective transverse momentum, 〈kT〉, of partons in the proton, as modelled within the framework of the PYTHIA Monte Carlo, gives a value of 〈kT〉=1.69±0.18+0.18−0.20 Ge...

A study of the ν̅ -jet mass spectrum in e+p⃗ν̅ X events at a center-of-mass energy 300 GeV has been performed with the ZEUS detector at the HERA collider at DESY using an integrated luminosity of 47.7 pb-1. The mass spectrum is in good agreement with that expected from standard model processes over the ν̅ -jet mass range studied. No significant exc...

The production and semi-leptonic decay of heavy quarks have been studied in the photoproduction process e/sup +/p to e/sup +/+dijet+e/sup -/+X with the ZEUS detector at HERA using an integrated luminosity of 38.5 pb/sup -1/. Events with photon-proton centre-of-mass energies, W/sub gamma p/, between 134 and 269 GeV and a photon virtuality, Q/sup 2/,...

The cross section and the proton structure function F-2 fur neutral current deep inelastic e(+)p scattering have been measured with the ZEUS detector at HERA using an integrated luminosity of 30 pb(-1). The data were collected in 1996 and 1997 at a centre-of-mass energy of 300 GeV. They cover the kinematic range 2.7 lt Q(2) lt 30000 GeV2 and 6.10(-...

Inclusive event shape variables have been measured in the Breit Frame for neutral current deep-inelastic positron-proton scattering using the H1 and ZEUS detectors at HERA. The variables thrust, jet broadening, C-parameter, jet mass and two kinds of differential two-jet rate have been studied in the kinematic range 7 < Q < 100 GeV. The Q dependence...

The exclusive electroproduction of ω mesons, ep→eωp, has been studied in the kinematic range 3<Q2<20 GeV2, 40<W<120 GeV and |t|<0.6 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 37.7 pb−1. The ω mesons were identified via the decay ω→π+π−π0. The exclusive cross section in the above kinematic region is σep→eωp=0.108±0.014(sta...

A measurement of the proton structure function F2(x,Q2) is presented in the kinematic range and 6·10−7<x<1·10−3. The results were obtained using a data sample corresponding to an integrated luminosity of in e+p reactions recorded with the ZEUS detector at HERA. Information from a silicon-strip tracking detector, installed in front of the small elec...

The dependence of the photon structure on the photon virtuality, Q2, is studied by measuring the reaction e+p→e++jet+jet+X at photon-proton centre-of-mass energies 134<W<223 GeV. Events have been selected in the Q2 ranges ≈ 0 GeV2, 0.1–0.55 GeV2, and 1.5–4.5 GeV2, having two jets with transverse energy ETjet>5.5 GeV in the final state. The dijet cr...

The distribution of the azimuthal angle for the charged hadrons has been studied in the hadronic centre-of-mass system for neutral current deep inelastic positron–proton scattering with the ZEUS detector at HERA. Measurements of the dependence of the moments of this distribution on the transverse momenta of the charged hadrons are presented. Asymme...

The first measurement of inclusive Ds± photoproduction at HERA has been performed with the ZEUS detector for photon-proton centre-of-mass energies . The measured cross section for and |ηDs|<1.5 is , where the last error arises from the uncertainty in the Ds± decay branching ratio. The measurements are compared with inclusive D∗± photoproduction cro...

The forward-jet cross section in deep inelastic e+p scattering has been measured using the ZEUS detector at HERA with an integrated luminosity of 6.36 pb−1. The jet cross section is presented as a function of jet transverse energy squared, E2T,jet, and Q2 in the kinematic ranges 10−2<E2T,jet/Q2<102 and 2.5·10−4<x<8.0·10−2. Since the perturbative QC...

The analysis of event shape variables enable studies of QCD and determinations of alpha-s, but require predictions to next-to-leading order. The predictions of two next-to-leading order programs are compared for current jet thrust, current jet-broadening, C parameter and jet-mass in deep inelastic scattering.

The e+p charged-current deep inelastic scattering cross sections, dσ/dQ2 for Q2 between 200 and 60000 GeV2, and dσ/dx and dσ/dy for Q2 > 200 GeV2, have been measured with the ZEUS detector at HERA. A data sample of 47.7 pb-1, collected at a center-of-mass energy of 300 GeV, has been used. The double-differential cross-section dσ/dQ2 falls by a fact...

The production of D*(+/-)(2010) mesons in deep inelastic scattering has been measured in the ZEUS detector at HERA using an integrated luminosity of 37 pb(-1). The decay channels D*(+) → D(0)pi(+) (+ c.c.), with D-0 → K(-)pi(+) or D-0 → K(- )pi(-)pi(+)pi(+), have been used to identify the D mesons. The e(+)p cross section for inclusive D*(+/-) prod...

The first measurement of inclusive D-s(+/-) photoproduction at HERA has been performed with the ZEUS detector for photon- proton centre-of-mass energies; 130 lt W lt 280 GeV The measured cross section for 3 lt p(perpendicular to)(Ds) lt 12 GeV and \eta(Ds)\ lt 1.5 is sigma(ep→DsX) = 3.79 +/- 0.59(stat.)(- 0.46)(+0.26)(syst.) +/- 0.94(br.) nb, where...

First inclusive measurements of isolated prompt photons in photoproduction at the HERA ep collider have been made with the ZEUS detector, using an integrated luminosity of 38.4 pb−1. Cross sections are given as a function of the pseudorapidity and the transverse energy (ηγ, ) of the photon, for GeV in the γp centre-of-mass energy range 134–285 GeV....

In this article we present a generic interface to several next-to-leading order cross-section programs. This enables the user to implement his/her code once and make cross-checks with different programs.

A search for the leptonic decays of W bosons produced in the reaction e+p→e+W±X at a centre-of-mass energy of has been performed with the ZEUS detector at HERA using an integrated luminosity of . Three events consistent with W→eν decay are found, giving a cross section estimate of , in good agreement with the Standard Model prediction. The correspo...

Measurements of the proton structure function F2 for 0.6 < Q2 < 17 GeV2 and 1.2 × 10-5 < cursive Greek chi < 1.9 × 10 -3 from ZEUS 1995 shifted vertex data are presented. From ZEUS F2 data the slopes dF2/d ln Q2 at fixed cursive Greek chi and din F2/d ln(1/cursive Greek chi) for cursive Greek chi < 0.01 at fixed Q2 are derived. For the latter, E665...

The cross section for the photoproduction of events containing three jets with a three-jet invariant mass of M3J>50 GeV has been measured with the ZEUS detector at HERA. The three-jet angular distributions are inconsistent with a uniform population of the available phase space but are well described by parton shower models and pQCD calculations. Co...

The photoproduction reaction γp→μ+μ−p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of . The ϒ meson has been observed in photoproduction for the first time. The sum of the products of the elastic ϒ(1S),ϒ(2S),ϒ(3S) photoproduction cross sections with their respective bra...

Many Data Grid services maintain persistent metadata in remote relational databases. However, existing relational database systems are neither grid enabled nor web service enabled, adversely aecting cross-organizational interoperability and reuse. The European Data Grid's Data Management Work Package addresses these issues with Spitr e. The Spitre...

Data management systems are central to many applications across multiple domains, and play a significant role in many others. Web services provide implementation neutral facilities for describing, invoking and orchestrating collections of networked resources. The Open Grid Services Architecture (OGSA) extends Web Services with consistent interfaces...

Key Results: The architecture of the existing version of Spitfire is presented, along with the web services version currently under development; a practical example is given in the paper. Motivation (problems addressed): The motivation is to provide a secure grid enabled database service to permit access to a wide range of relational database syste...

Data management has proved to be one of the hardest jobs to do in a the grid environment. In particular, file repli- cation has suffered problems of transport failures, client disconnections, duplication of current transfers and resul- tant server saturation. To address these problems the globus and gLite grid mid- dlewares offer new services which...

Transferring data reliably and in a robust manner is one of the most basic requirements in distributed systems. In large scientific Grid environments, the transfer services have to be not only scalable but also very flexible in adapt-ing to the individual Grid site's policies. Also the policies of the virtual organizations making use of the Grid re...

Objective The objective of this document is to survey all available HEP use case documents, select from them the use cases which are common to Grid-like computing systems and identify the implications on the metadata catalogue which is to be used. For now, only physicist-level use cases are considered; that is, only the requirements of the end user...

Production Grids are deployments of Grids through a well-defined set of sites with a high level of commitment, adhering to a certain standard of support and with a clear process of accepting Virtual Organizations as their users. In this document we report our experience, lessons learned and initial recommendations for designing data management serv...

Correlations between charged particles in deep inelastic e/sup +/p scattering have been studied in the Breit frame with the ZEUS detector at HERA using an integrated luminosity of 6.4 pb/sup -1/. Short-range correlations are analysed in terms of the angular separation between current-region particles within a cone centred around the virtual photon...

The distribution of the azimuthal angle for the charged hadrons has been studied in the hadronic centre-of-mass system for neutral current deep inelastic positron-proton scattering with the ZEUS detector at HERA. Measurements of the dependence of the moments of this distribution on the transverse momenta of the charged hadrons are presented. Asymme...

Elastic and proton-dissociative photoproduction of rho /sup 0/, phi and J/ psi vector mesons ( gamma p to Vp, gamma p to VN, respectively) have been measured in e/sup +/p interactions at HERA up to -t=3 GeV/sup 2/, where t is the four-momentum transfer squared at the photon-vector-meson vertex. The analysis is based on a data sample in which photop...

Differential cross sections for dijet photoproduction in association with a leading neutron using the reaction e/sup +/+p to e/sup +/+n+jet+jet+X/sub r/ have been measured with the ZEUS detector at HERA using an integrated luminosity of 6.4 pb/sup -1/. The fraction of dijet events with a leading neutron in the final state was studied as a function...

Dijet production has been studied in neutral current deep inelastic e(+)p scattering for 470 lt Q(2) lt 20000 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 38.4 pb(-1). Dijet differential cross sections are presented in a kinematic region where both theoretical and experimental uncertainties are small. Next-to-leading-order...

The forward-jet cross section in deep inelastic e(+)p scattering has been measured using the ZEUS detector at HERA with an integrated luminosity of 6.36 pb(-1). The jet cross section is presented as a function of jet transverse energy squared, E-T,jet(2), and Q(2) in the kinematic ranges 10(-2) lt E-T,jet(2)/Q(2) lt 10(2) and 2.5.10(-4) lt x lt 8.0...

A measurement of the proton structure function F-2(x, Q(2)) is presented in the kinematic range 0.045 GeV2 lt Q(2) lt 0.65 GeV2 and 6 . 10(-7) lt x lt 1 . 10(-3). The results were obtained using a data sample corresponding to an integrated luminosity of 3.9 pb(-1) in e(+)p reactions recorded with the ZEUS detector at HERA. Information from a silico...

Exclusive electroproduction of rho(o) mesons has been measured using the ZEUS detector at HERA in two Q(2) ranges, 0.25 lt Q(2) lt 0.85 GeV2 and 3 lt Q(2) lt 30 GeV2. The low-Q(2) data span the range 20 lt W lt 90 GeV; the high-Q(2) data cover the 40 lt W lt 120 GeV interval. Both samples extend up to four-momentum transfers of \t\ = 0.6 GeV2. The...

In a search for signatures of physics processes beyond the Standard Model, various eeqq vector contact-interaction hypotheses have been tested using the high-Q(2) deep inelastic neutral-current e(+)p scattering data collected with the ZEUS detector at HERA. The data correspond to an integrated luminosity of 47.7pb(-1) of e(+)p interactions at 300 G...

A study of the [([nu])over bar]-jet mass spectrum in e(+) p→[([nu])over bar]X events at a center-of-mass energy 300 GeV has been performed with the ZEUS detector at the HERA collider at DESY using an integrated luminosity of 47.7 pb(-1). The mass spectrum is in good agreement with that expected from standard model processes over the [([nu])over bar...

The e(+)-jet invariant mass spectrum produced in the reaction e(+)p → e(+)X has been studied at a center-of-mass energy of 300 GeV. The data were collected. using the ZEUS detector operating at the HERA collider, and correspond to an integrated luminosity of 47.7 pb(-1). The observed mass spectrum is in good agreement with Standard Model expectatio...

The dependence of the photon structure on the photon virtuality, Q(2), is studied by measuring the reaction e(+) p - → e(+) + jet + jet + X at photon-proton centre-of-mass energies 134 lt W lt 223 GeV. Events have been selected in the Q(2) ranges approximate to 0 GeV2, 0.1-0.55 GeV2, and 1.5-4.5 GeV2, having two jets with transverse energy E-f(jet)...

A search for the leptonic decays of W bosons produced in the reaction e/sup +/p to e/sup +/W/sup +or-/X at a centre-of-mass energy of 300 GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7 pb/sup -1/. Three events consistent with W to e nu decay are found, giving a cross section estimate of 0.9/sub -0.7//su...

The dijet cross section in photoproduction has been measured with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb/sup -1/. The events were required to have a virtuality of the incoming photon, Q/sup 2/, of less than 1 GeV/sup 2/ and a photon-proton centre-of-mass energy in the range 134 lt W/sub gamma p/ lt 277 GeV. Each event c...

Dijet cross sections in neutral current deep inelastic ep scattering have been measured in the range 10 lt Q/sup 2/ lt 10/sup 4/ GeV/sup 2/ with the ZEUS detector at HERA using an integrated luminosity of 38.4 pb/sup -1/. The cross sections, measured in the Breit frame using the k/sub T/, jet algorithm, are compared with next-to-leading-order pertu...

The exclusive photoproduction of J/psi mesons, gammap → J/psip, has been studied in ep collisions with the ZEUS detector at HERA, in the kinematic range 20 lt W lt 290 GeV, where W is the photon-proton centre-of-mass energy. The J/psi mesons were reconstructed in the union and the electron decay channels using integrated luminosities of 38 pb(-1) a...

Dijet differential cross sections for the reaction e/sup +/p to e/sup +/+jet+jet+X in the photoproduction regime have been measured with the ZEUS detector at HERA using an integrated luminosity of 42.7 pb/sup -1/. The cross sections are given for photon-proton centre-of-mass energies in the range 134 lt W lt 277 GeV. The differential cross sections...

Inclusive jet differential cross sections have been measured in neutral current deep inelastic e(+)p scattering for boson virtualities Q(2) gt 125 GeV2. The data were taken using the ZEUS detector at HERA and correspond to an integrated luminosity of 38.6 pb(-1). Jets were identified in the Breit frame using the longitudinally invariant k(T) cluste...

The production of neutrons carrying at least 20% of the proton beam energy (x/sub L/ gt 0.2) in e/sup +/ p collisions has been studied with the ZEUS detector at HERA for a wide range of Q/sup 2/, the photon virtuality, from photoproduction to deep inelastic scattering. The neutron-tagged cross section, ep to e' Xn, is measured relative to the inclu...

Diffractive production of D*+/-(2010) mesons in deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 44.3 pb(-1). Diffractive charm production is identified by the presence of a large rapidity gap in the final state of events in which a D*+/- (2010) meson is reconstructed in the decay channel...