Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at sNN= 5.02 TeV
Yazarlar (150)
W Carvalho
J Chinellato
E Coelho
EM Da Costa
GG Da Silveira
D De Jesus Damiao
C De Oliveira Martins
S Fonseca De Souza
H Malbouisson
D Matos Figueiredo
M Melo De Almeida
C Mora Herrera
L Mundim
H Nogima
WL Prado Da Silva
LJ Sanchez Rosas
A Santoro
A Sznajder
M Thiel
EJ Tonelli Manganote
F Torres Da Silva De Araujo
A Vilela Pereira
S Ahuja
CA Bernardes
L Calligaris
TR Fernandez Perez Tomei Tokat Gaziosmanpaşa Üniversitesi
I Krätschmer
H Kirschenmann
P Schütze
G Steinbrück
O Gutsche
AM Sirunyan
A Tumasyan
W Adam
F Ambrogi
E Asilar
T Bergauer
J Brandstetter
M Dragicevic
J Erö
A Escalante Del Valle
M Flechl
R Frühwirth
VM Ghete
J Hrubec
M Jeitler
N Krammer
D Liko
T Madlener
I Mikulec
N Rad
H Rohringer
J Schieck
R Schöfbeck
M Spanring
D Spitzbart
A Taurok
W Waltenberger
J Wittmann
C-E Wulz
M Zarucki
V Chekhovsky
EA De Wolf
D Di Croce
X Janssen
J Lauwers
M Pieters
H Van Haevermaet
P Van Mechelen
S Abu Zeid
F Blekman
J D'Hondt
I De Bruyn
J De Clercq
K Deroover
G Flouris
D Lontkovskyi
S Lowette
I Marchesini
S Moortgat
L Moreels
Q Python
K Skovpen
Doç. Dr. Mustafa Numan BAKIRCI Türkiye
W Van Doninck
P Van Mulders
I Van Parijs
D Beghin
B Bilin
H Brun
B Clerbaux
G De Lentdecker
H Delannoy
B Dorney
G Fasanella
L Favart
R Goldouzian
A Grebenyuk
AK Kalsi
T Lenzi
J Luetic
N Postiau
E Starling
L Thomas
C Vander Velde
P Vanlaer
D Vannerom
Q Wang
T Cornelis
D Dobur
A Fagot
M Gul
I Khvastunov
D Poyraz
C Roskas
D Trocino
M Tytgat
W Verbeke
B Vermassen
M Vit
N Zaganidis
H Bakhshiansohi
O Bondu
S Brochet
G Bruno
C Caputo
P David
C Delaere
M Delcourt
B Francois
A Giammanco
G Krintiras
V Lemaitre
A Magitteri
A Mertens
M Musich
K Piotrzkowski
A Saggio
M Vidal Marono
S Wertz
J Zobec
FL Alves
GA Alves
M Correa Martins Junior
G Correia Silva
C Hensel
A Moraes
ME Pol
P Rebello Teles
E Belchior Batista Das Chagas
| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | Physics Letters B | ||
| Makale Dili | – | Basım Tarihi | 10-2019 |
| Cilt / Sayı / Sayfa | 797 / 0 / 134826–0 | DOI | – |
| Makale Linki | https://www.sciencedirect.com/science/article/pii/S0370269319305404 | ||
| UAK Araştırma Alanları |
Yüksek Enerji ve Parçacık Fiziği
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| Özet |
| Evidence for the light-by-light scattering process, γ γ→ γ γ, in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is reported. The analysis is conducted using a data sample corresponding to an integrated luminosity of 390 μ b− 1 recorded by the CMS experiment at the LHC. Light-by-light scattering processes are selected in events with two photons exclusively produced, each with transverse energy E T γ> 2 GeV, pseudorapidity| η γ|< 2.4, diphoton invariant mass m γ γ> 5 GeV, diphoton transverse momentum p T γ γ< 1 GeV, and diphoton acoplanarity below 0.01. After all selection criteria are applied, 14 events are observed, compared to expectations of 9.0±0.9 (theo) events for the signal and 4.0±1.2 (stat) for the background processes. The excess observed in data relative to the background-only expectation corresponds to a significance of 3.7 standard deviations, and has … |
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