Publications associées à Sursaut gamma

The behaviour of dark matter associated with four bright cluster galaxies in the 10 kpc core of Abell 3827

David Richard Harvey, Mathilde Jauzac, Richard Massey, Johan Richard

Galaxy cluster Abell 3827 hosts the stellar remnants of four almost equally bright elliptical galaxies within a core of radius 10 kpc. Such corrugation of the stellar distribution is very rare, and suggests recent formation by several simultaneous mergers. ...

Oxford University Press2015

Measurement of the exclusive gamma production cross-section in pp collisions at root s=7 TeV and 8 TeV

Jian Wang, Olivier Schneider, Yiming Li, Yi Zhang, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Michel De Cian, Luca Pescatore, Elena Graverini, Chitsanu Khurewathanakul, Renato Quagliani, Maria Vieites Diaz, Alessandro Mapelli, Zhirui Xu, Lei Zhang, Jessica Prisciandaro, Mark Tobin, Minh Tâm Tran, Niko Neufeld, Matthew Needham, Marc-Olivier Bettler, Greig Alan Cowan, Maurizio Martinelli, Donal Patrick Hill, Cédric Potterat, Liang Sun, Pietro Marino, Mirco Dorigo, Xiaoxue Han, Sebastiana Gianì, Liupan An, Federico Leo Redi, Ilya Komarov, Thibaud Humair, Bastien Luca Muster, Frédéric Guillaume Dupertuis, Julien Rouvinet, Barinjaka Rakotomiaramanana, Hans Dijkstra, Gerhard Raven, Peter Clarke, Frédéric Teubert, Giovanni Carboni, Victor Coco, Adam Davis, Paolo Durante

A study is presented of central exclusive production of gamma(n S) states, where the gamma (n S) resonances decay to the mu(+) mu(-) final state, using p p collision data recorded by the LHCb experiment. The cross-section is measured in the rapidity range ...

Springer2015

Comparison of the Z/$\gamma$$^{∗}$ + jets to $\gamma$ + jets cross sections in pp collisions at $ \sqrt{s}=8 $ TeV

Jian Wang, Matthias Finger, Lesya Shchutska, Qian Wang, Matthias Wolf, Varun Sharma, Konstantin Androsov, Jan Steggemann, Leonardo Cristella, Roberto Castello, Alessandro Degano, Zhirui Xu, Chao Wang, João Miguel das Neves Duarte, Lei Zhang, Tian Cheng, Yixing Chen, Werner Lustermann, Andromachi Tsirou, Alexis Kalogeropoulos, Andrea Rizzi, Ioannis Papadopoulos, Paolo Ronchese, Thomas Muller, Ho Ling Li, Giuseppe Codispoti, Hua Zhang, Siyuan Wang, Daniel Gonzalez, Hang Yin, Paul Turner, Wei Sun, Raffaele Tito D'Agnolo, Ji Hyun Kim, Donghyun Kim, Dipanwita Dutta, Zheng Wang, Sanjeev Kumar, Wei Li, Yong Yang, Ajay Kumar, Ashish Sharma, Georgios Anagnostou, Joao Varela, Csaba Hajdu, Muhammad Ahmad, Ekaterina Kuznetsova, Ioannis Evangelou, Matthias Weber, Muhammad Shoaib, Milos Dordevic, Vineet Kumar, Vladimir Petrov, Francesco Fiori, Quentin Python, Meng Xiao, Hao Liu, Sourav Sen, Viktor Khristenko, Marco Trovato, Gurpreet Singh, Fan Xia, Kai Yi, Bibhuprasad Mahakud, Rajat Gupta, Lei Feng, Shuai Liu, Aram Avetisyan, Charles Dietz, Alexandre Aubin, Michal Simon, Matteo Marone, Juan Ramon Castiñeiras De Saa, Giovanni Bianchi, Ahmed Ali

A comparison of the differential cross sections for the processes Z/γ

^{*}

+ jets and photon (γ)+jets is presented. The measurements are based on data collected with the CMS detector at

\sqrt{s}=8

TeV corresponding to an integrated luminosity of 19.7 ...

2015

Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma

Olivier Schneider, Yiming Li, Chao Wang, Tagir Aushev, Sun Hee Kim, Tara Nanut, Jun Yong Kim, Ji Hyun Kim, Donghyun Kim, Dipanwita Dutta

We search for the decay B-s(0) -> gamma gamma and measure the branching fraction for B-s(0) -> phi gamma using 121.4 fb(-1) of data collected at the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The B-s(0) ...

Amer Physical Soc2015

Multiwavelength observations of Mrk 501 in 2008

Xin Chen, Thomas Günther Bretz

Context. Blazars are variable sources on various timescales over a broad energy range spanning from radio to very high energy (>100 GeV, hereafter VHE). Mrk 501 is one of the brightest blazars at TeV energies and has been extensively studied since its firs ...

Edp Sciences S A2015

Network-timing-dependent plasticity

Henry Markram, Eilif Benjamin Muller, Daniel Keller, Vincent Delattre

Bursts of activity in networks of neurons are thought to convey salient information and drive synaptic plasticity. Here we report that network bursts also exert a profound effect on Spike-Timing-Dependent Plasticity (STDP). In acute slices of juvenile rat ...

2015

Galaxy Alignments: Theory, Modelling & Simulations

Anaïs Marie Rassat

The shapes of galaxies are not randomly oriented on the sky. During the galaxy formation and evolution process, environment has a strong influence, as tidal gravitational fields in the large-scale structure tend to align nearby galaxies. Additionally, even ...

Springer2015

Measurement of the Direct CP Asymmetry in over-bar & RARR; gamma; Decays with a Lepton Tag

Olivier Schneider, Yiming Li, Mingkui Wang, Chao Wang, Tagir Aushev, Sun Hee Kim, Tara Nanut, Jun Yong Kim, Ji Hyun Kim, Donghyun Kim, Dipanwita Dutta

We report the measurement of the direct CP asymmetry in the radiative (B) over bar -> Xs+d gamma decay using a data sample of (772 +/- 11) x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-en ...

Amer Physical Soc2015

Measurement of the (B)over-bar -> X-s gamma branching fraction with a sum of exclusive decays

Olivier Schneider, Yiming Li, Chao Wang, Tagir Aushev, Sun Hee Kim, Tara Nanut, Jun Yong Kim, Ji Hyun Kim, Donghyun Kim, Xiao Wang

We use 772 x 10(6) B (B) over bar meson pairs collected at the gamma(4S) resonance with the Belle detector to measure the branching fraction for (B) over bar -> X-s gamma Our measurement uses a sum-of-exclusives approach in which 38 of the hadronic final s ...

Amer Physical Soc2015

First Observation of the Hadronic Transition Upsilon(4S) -> eta h(b)(1P) and New Measurement of the h(b)(1P) and eta(b)(1S) Parameters

Olivier Schneider, Mingkui Wang, Tagir Aushev, Sun Hee Kim, Tara Nanut, Ji Hyun Kim, Donghyun Kim, Xiao Wang

Using a sample of 771.6 x 10(6) Upsilon Upsilon(4S) decays collected by the Belle experiment at the KEKB e(+)e(-) collider, we observe, for the first time, the transition Upsilon(4S) -> eta h(b)(1P) with the branching fraction B[Upsilon(4S) -> eta h(b)(1P) ...

Amer Physical Soc2015

Sursaut gamma

The behaviour of dark matter associated with four bright cluster galaxies in the 10 kpc core of Abell 3827

Measurement of the exclusive gamma production cross-section in pp collisions at root s=7 TeV and 8 TeV

Comparison of the Z/$\gamma$$^{∗}$ + jets to $\gamma$ + jets cross sections in pp collisions at $ \sqrt{s}=8 $ TeV

Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma

Multiwavelength observations of Mrk 501 in 2008

Network-timing-dependent plasticity

Galaxy Alignments: Theory, Modelling & Simulations

Measurement of the Direct CP Asymmetry in over-bar & RARR; gamma; Decays with a Lepton Tag

Measurement of the (B)over-bar -> X-s gamma branching fraction with a sum of exclusive decays

First Observation of the Hadronic Transition Upsilon(4S) -> eta h(b)(1P) and New Measurement of the h(b)(1P) and eta(b)(1S) Parameters

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Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma

Network-timing-dependent plasticity

The behaviour of dark matter associated with four bright cluster galaxies in the 10 kpc core of Abell 3827

Measurement of the (B)over-bar -> X-s gamma branching fraction with a sum of exclusive decays

Measurement of the Direct CP Asymmetry in over-bar & RARR; gamma; Decays with a Lepton Tag

First Observation of the Hadronic Transition Upsilon(4S) -> eta h(b)(1P) and New Measurement of the h(b)(1P) and eta(b)(1S) Parameters

Multiwavelength observations of Mrk 501 in 2008

Galaxy Alignments: Theory, Modelling & Simulations

Measurement of the exclusive gamma production cross-section in pp collisions at root s=7 TeV and 8 TeV

Comparison of the Z/$\gamma$$^{∗}$ + jets to $\gamma$ + jets cross sections in pp collisions at $ \sqrt{s}=8 $ TeV