X
Search Filters
Format Format
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
experiment (485) 485
high energy physics (406) 406
physics (400) 400
physics of elementary particles and fields (385) 385
fysik (366) 366
natural sciences (366) 366
naturvetenskap (366) 366
physical sciences (366) 366
hadron-hadron scattering (351) 351
subatomic physics (286) 286
subatomär fysik (286) 286
high energy physics - experiment (285) 285
phenomenology (280) 280
cern lhc coll (254) 254
particle physics (254) 254
physics - high energy physics - experiment (252) 252
experimental results (241) 241
physics, particles & fields (236) 236
hep (219) 219
p p: scattering (206) 206
p p: colliding beams (197) 197
ex (171) 171
13000 gev-cms (159) 159
nuclear experiment (157) 157
large hadron collider (139) 139
elementary particles, quantum field theory (129) 129
quantum field theories, string theory (129) 129
物理学 (129) 129
[phys.hexp]physics [physics]/high energy physics - experiment [hep-ex] (118) 118
luminosity (110) 110
nuclear and particle physics. atomic energy. radioactivity (108) 108
astrophysics (95) 95
decay (95) 95
astronomy & astrophysics (86) 86
particle collisions (84) 84
parton distributions (80) 80
classical and quantum gravitation, relativity theory (78) 78
quantum physics (78) 78
quarks (77) 77
astronomy, astrophysics and cosmology (76) 76
ciências físicas [ciências naturais] (71) 71
science & technology (70) 70
beyond standard model (68) 68
background (62) 62
physics, nuclear (62) 62
leptons (61) 61
supersymmetry (58) 58
[ phys.hexp ] physics [physics]/high energy physics - experiment [hep-ex] (55) 55
high energy astrophysical phenomena (55) 55
transverse momentum (54) 54
atlas (53) 53
higgs physics (51) 51
measurement science and instrumentation (51) 51
nuclear energy (51) 51
nuclear physics, heavy ions, hadrons (51) 51
scattering [p p] (51) 51
collisions (47) 47
bosons (46) 46
colliding beams [p p] (46) 46
confidence intervals (46) 46
mass spectrum: (46) 46
mass dependence (45) 45
hep-ex (44) 44
pair production (44) 44
particle physics - experiment (44) 44
b physics (43) 43
channel cross section: branching ratio: upper limit (42) 42
nuclear and high energy physics (41) 41
settore fis/01 - fisica sperimentale (40) 40
hadron-hadron collisions (39) 39
settore fis/04 - fisica nucleare e subnucleare (39) 39
flavor physics (38) 38
plus plus (37) 37
searching (37) 37
standard model (37) 37
bottom: particle identification (36) 36
statistical (36) 36
settore ing-inf/07 - misure elettriche e elettroniche (35) 35
channel cross section: upper limit (34) 34
cross sections (34) 34
higgs bosons (34) 34
physics, multidisciplinary (34) 34
z0: leptonic decay (34) 34
jet: bottom (32) 32
top physics (32) 32
final state:jet lepton (31) 31
tool (31) 31
8000 gev-cms (30) 30
physics and astronomy (30) 30
transverse momentum: missing-energy (30) 30
hadron colliders (29) 29
protons (29) 29
extension (28) 28
regular - experimental physics (28) 28
lhcb (27) 27
mass (27) 27
top: pair production (27) 27
astronomi, astrofysik och kosmologi (26) 26
charm physics (26) 26
differential cross section: measured (26) 26
more...
Language Language
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


by Aaboud, M and Aad, G and Abbott, B and Abdinov, O and Abeloos, B and Abidi, S.H and AbouZeid, O.S and Abraham, N.L and Abramowicz, H and Abreu, H and Abulaiti, Y and Acharya, B.S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adye, T and Affolder, A.A and Afik, Y and Agheorghiesei, C and Aguilar-Saavedra, J.A and Ahmadov, F and Aielli, G and Akatsuka, S and Åkesson, T.P.A and Akilli, E and Akimov, A.V and Alberghi, G.L and Albert, J and Albicocco, P and Alconada Verzini, M.J and Alderweireldt, S and Aleksa, M and Aleksandrov, I.N and Alexa, C and Alexander, G and Alexopoulos, T and Alhroob, M and Ali, B and Alimonti, G and Alison, J and Alkire, S.P and Allaire, C and Allbrooke, B.M.M and Allen, B.W and Allport, P.P and Aloisio, A and Alonso, F and Alonso, A and Alpigiani, C and Alshehri, A.A and Alstaty, M.I and Alvarez Gonzalez, B and Álvarez Piqueras, D and Alviggi, M.G and Amadio, B.T and Amaral Coutinho, Y and Ambroz, L and Amelung, C and Amidei, D and Amor Dos Santos, S.P and Amoroso, S and Anastopoulos, C and Ancu, L.S and Andari, N and Andeen, T and Anders, J.K and Anders, C.F and Anderson, K.J and Andreazza, A and Andrei, V and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A.V and Annovi, A and Antel, C and Antonelli, M and Antonov, A and Antrim, D.J.A and Anulli, F and Aoki, M and Aperio Bella, L and Arabidze, G and Arai, Y and Araque, J.P and Araujo Ferraz, V and Arce, A.T.H and Ardell, R.E and Arduh, F.A and Arguin, J-F and Argyropoulos, S and Armbruster, A.J and Armitage, L.J and Arnaez, O and Arnold, H and Arratia, M and Arslan, O and Artamonov, A and Artoni, G and ... and SLAC National Accelerator Lab., Menlo Park, CA (United States) and Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States) and Partikel- och astropartikelfysik and Skolan för teknikvetenskap (SCI) and KTH and Fysik
Physics Letters B, ISSN 0370-2693, 10/2018, Volume 785, Issue C, pp. 136 - 158
Journal Article
by Aaboud, M and Aad, G and Abbott, B and Abdinov, O and Abeloos, B and Abidi, S H and AbouZeid, O S and Abraham, N L and Abramowicz, H and Abreu, H and Abreu, R and Abulaiti, Y and Acharya, B S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adye, T and Affolder, A A and Afik, Y and Agatonovic-Jovin, T and Agheorghiesei, C and Aguilar-Saavedra, J A and Ahlen, S P and Ahmadov, F and Aielli, G and Akatsuka, S and Akerstedt, H and Åkesson, T P. A and Akilli, E and Akimov, A V and Alberghi, G L and Albert, J and Albicocco, P and Alconada Verzini, M J and Alderweireldt, S C and Aleksa, M and Aleksandrov, I N and Alexa, C and Alexander, G and Alexopoulos, T and Alhroob, M and Ali, B and Aliev, M and Alimonti, G and Alison, J and Alkire, S P and Allbrooke, B M. M and Allen, B W and Allport, P P and Aloisio, A and Alonso, A and Alonso, F and Alpigiani, C and Alshehri, A A and Alstaty, M I and Alvarez Gonzalez, B and Álvarez Piqueras, D and Alviggi, M G and Amadio, B T and Amaral Coutinho, Y and Amelung, C and Amidei, D and Amor Dos Santos, S P and Amoroso, S and Amundsen, G and Anastopoulos, C and Ancu, L S and Andari, N and Andeen, T and Anders, C F and Anders, J K and Anderson, K J and Andreazza, A and Andrei, V and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A V and Anjos, N and Annovi, A and Antel, C and Antonelli, M and Antonov, A and Antrim, D J and Anulli, F and Aoki, M and Aperio Bella, L and Arabidze, G and Arai, Y and Araque, J P and Araujo Ferraz, V and Arce, A T. H and Ardell, R E and Arduh, F A and Arguin, J-F and Argyropoulos, S and Arik, M and Armbruster, A J and Armitage, L J and ... and ATLAS Collaboration and The ATLAS collaboration and SLAC National Accelerator Lab., Menlo Park, CA (United States) and Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States) and Oak Ridge National Laboratory, Oak Ridge Leadership Computing Facility (OLCF) and Partikel- och astropartikelfysik and Skolan för teknikvetenskap (SCI) and KTH and Fysik
Journal of High Energy Physics, ISSN 1126-6708, 1/2018, Volume 2018, Issue 1, pp. 1 - 53
Journal Article
by Aaboud, M and Aad, G and Abbott, B and Abdinov, O and Abeloos, B and Abhayasinghe, D.K and Abidi, S.H and AbouZeid, O.S and Abraham, N.L and Abramowicz, H and Abreu, H and Abulaiti, Y and Acharya, B.S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adiguzel, A and Adye, T and Affolder, A.A and Afik, Y and Agheorghiesei, C and Aguilar-Saavedra, J.A and Ahmadov, F and Aielli, G and Akatsuka, S and Åkesson, T.P.A and Akilli, E and Akimov, A.V and Alberghi, G.L and Albert, J and Albicocco, P and Alconada Verzini, M.J and Alderweireldt, S and Aleksa, M and Aleksandrov, I.N and Alexa, C and Alexopoulos, T and Alhroob, M and Ali, B and Aliev, M and Alimonti, G and Alison, J and Alkire, S.P and Allaire, C and Allbrooke, B.M.M and Allen, B.W and Allport, P.P and Aloisio, A and Alonso, A and Alonso, F and Alpigiani, C and Alshehri, A.A and Alstaty, M.I and Alvarez Gonzalez, B and Álvarez Piqueras, D and Alviggi, M.G and Amadio, B.T and Amaral Coutinho, Y and Ambroz, L and Amelung, C and Amidei, D and Amor Dos Santos, S.P and Amoroso, S and Amrouche, C.S and Anastopoulos, C and Ancu, L.S and Andari, N and Andeen, T and Anders, J.K and Anders, C.F and Anderson, K.J and Andreazza, A and Andrei, V and Anelli, C.R and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A.V and Annovi, A and Antel, C and Anthony, M.T and Antonelli, M and Antrim, D.J.A and Anulli, F and Aoki, M and Aperio Bella, L and Arabidze, G and Araque, J.P and Araujo Ferraz, V and Araujo Pereira, R and Arce, A.T.H and Ardell, R.E and Arduh, F.A and Arguin, J-F and Argyropoulos, S and Armbruster, A.J and Armitage, L.J and Armstrong, A and Arnaez, O and ... and ATLAS Collaboration and Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States) and Partikel- och astropartikelfysik and Skolan för teknikvetenskap (SCI) and KTH and Fysik
Physics Letters B, ISSN 0370-2693, 09/2018, Volume 784, Issue C, pp. 173 - 191
The observation of Higgs boson production in association with a top quark pair ( ), based on the analysis of proton–proton collision data at a centre-of-mass... 
PHYSICS, NUCLEAR | SEARCH | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Experiment | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | Fysik | Subatomär fysik | Physical Sciences | Subatomic Physics | Naturvetenskap | Natural Sciences
Journal Article
by Aaboud, M and Aad, G and Abbott, B and Abdallah, J and Abdinov, O and Abeloos, B and Abidi, S H and AbouZeid, O S and Abraham, N L and Abramowicz, H and Abreu, H and Abreu, R and Abulaiti, Y and Acharya, B S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adye, T and Affolder, A A and Agatonovic-Jovin, T and Agheorghiesei, C and Aguilar-Saavedra, J A and Ahlen, S P and Ahmadov, F and Aielli, G and Akatsuka, S and Akerstedt, H and Åkesson, T P. A and Akimov, A V and Alberghi, G L and Albert, J and Albicocco, P and Verzini, M J. Alconada and Aleksa, M and Aleksandrov, I N and Alexa, C and Alexander, G and Alexopoulos, T and Alhroob, M and Ali, B and Aliev, M and Alimonti, G and Alison, J and Alkire, S P and Allbrooke, B M. M and Allen, B W and Allport, P P and Aloisio, A and Alonso, A and Alonso, F and Alpigiani, C and Alshehri, A A and Alstaty, M and Gonzalez, B Alvarez and Piqueras, D Álvarez and Alviggi, M G and Amadio, B T and Coutinho, Y Amaral and Amelung, C and Amidei, D and Santos, S P. Amor Dos and Amorim, A and Amoroso, S and Amundsen, G and Anastopoulos, C and Ancu, L S and Andari, N and Andeen, T and Anders, C F and Anders, J K and Anderson, K J and Andreazza, A and Andrei, V and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A V and Anjos, N and Annovi, A and Antel, C and Antonelli, M and Antonov, A and Antrim, D J and Anulli, F and Aoki, M and Bella, L Aperio and Arabidze, G and Arai, Y and Araque, J P and Ferraz, V Araujo and Arce, A T. H and Ardell, R E and Arduh, F A and Arguin, J-F and Argyropoulos, S and Arik, M and Armbruster, A J and Armitage, L J and Arnaez, O and ... and ATLAS Collaboration and Brookhaven National Lab. (BNL), Upton, NY (United States) and Oak Ridge National Laboratory, Oak Ridge Leadership Computing Facility (OLCF) and eSSENCE: The e-Science Collaboration and Lund University and Partikelfysik and Lunds universitet and Particle Physics
The European Physical Journal C, ISSN 1434-6044, 6/2017, Volume 77, Issue 6, pp. 1 - 40
Journal Article
by Aaboud, M and Aad, G and Abbott, B and Abdinov, O and Abeloos, B and Abidi, S H and AbouZeid, O S and Abraham, N L and Abramowicz, H and Abreu, H and Abulaiti, Y and Acharya, B S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adye, T and Affolder, A A and Afik, Y and Agheorghiesei, C and Aguilar-Saavedra, J A and Ahmadov, F and Aielli, G and Akatsuka, S and Åkesson, T P. A and Akilli, E and Akimov, A V and Alberghi, G L and Albert, J and Albicocco, P and Alconada Verzini, M J and Alderweireldt, S and Aleksa, M and Aleksandrov, I N and Alexa, C and Alexander, G and Alexopoulos, T and Alhroob, M and Ali, B and Aliev, M and Alimonti, G and Alison, J and Alkire, S P and Allaire, C and Allbrooke, B M. M and Allen, B W and Allport, P P and Aloisio, A and Alonso, A and Alonso, F and Alpigiani, C and Alshehri, A A and Alstaty, M I and Alvarez Gonzalez, B and Álvarez Piqueras, D and Alviggi, M G and Amadio, B T and Amaral Coutinho, Y and Ambroz, L and Amelung, C and Amidei, D and Amor Dos Santos, S P and Amoroso, S and Amrouche, C S and Anastopoulos, C and Ancu, L S and Andari, N and Andeen, T and Anders, C F and Anders, J K and Anderson, K J and Andreazza, A and Andrei, V and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A V and Annovi, A and Antel, C and Anthony, M T and Antonelli, M and Antrim, D J. A and Anulli, F and Aoki, M and Aperio Bella, L and Arabidze, G and Arai, Y and Araque, J P and Araujo Ferraz, V and Araujo Pereira, R and Arce, A T. H and Ardell, R E and Arduh, F A and Arguin, J-F and Argyropoulos, S and Armbruster, A J and Armitage, L J and Arnaez, O and Arnold, H and Arratia, M and ... and ATLAS Collaboration and The ATLAS collaboration and Partikel- och astropartikelfysik and Skolan för teknikvetenskap (SCI) and KTH and Fysik
Journal of High Energy Physics, ISSN 1126-6708, 7/2018, Volume 2018, Issue 7, pp. 1 - 68
Journal Article
by Aaboud, M and Aad, G and Abbott, B and Abdinov, O and Abeloos, B and Abidi, S. H and AbouZeid, O. S and Abraham, N. L and Abramowicz, H and Abreu, H and Abulaiti, Y and Acharya, B. S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adye, T and Affolder, A. A and Afik, Y and Agheorghiesei, C and Aguilar-Saavedra, J. A and Ahmadov, F and Aielli, G and Akatsuka, S and Åkesson, T. P. A and Akilli, E and Akimov, A. V and Alberghi, G. L and Albert, J and Albicocco, P and Alconada Verzini, M. J and Alderweireldt, S and Aleksa, M and Aleksandrov, I. N and Alexa, C and Alexander, G and Alexopoulos, T and Alhroob, M and Ali, B and Alimonti, G and Alison, J and Alkire, S. P and Allaire, C and Allbrooke, B. M. M and Allen, B. W and Allport, P. P and Aloisio, A and Alonso, A and Alonso, F and Alpigiani, C and Alshehri, A. A and Alstaty, M. I and Alvarez Gonzalez, B and Álvarez Piqueras, D and Alviggi, M. G and Amadio, B. T and Amaral Coutinho, Y and Ambroz, L and Amelung, C and Amidei, D and Amor Dos Santos, S. P and Amoroso, S and Anastopoulos, C and Ancu, L. S and Andari, N and Andeen, T and Anders, C. F and Anders, J. K and Anderson, K. J and Andreazza, A and Andrei, V and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A. V and Annovi, A and Antel, C and Antonelli, M and Antonov, A and Antrim, D. J. A and Anulli, F and Aoki, M and Aperio Bella, L and Arabidze, G and Arai, Y and Araque, J. P and Araujo Ferraz, V and Arce, A. T. H and Ardell, R. E and Arduh, F. A and Arguin, J-F and Argyropoulos, S and Armbruster, A. J and Armitage, L. J and Arnaez, O and Arnold, H and Arratia, M and Arslan, O and Artamonov, A and Artoni, G and ... and Brookhaven National Lab. (BNL), Upton, NY (United States) and eSSENCE: The e-Science Collaboration and Lund University and Partikelfysik and Lunds universitet and Particle Physics
Physics Letters. Section B, ISSN 0370-2693, 10/2018, Volume 785, Issue C, p. 136
Results of a search for gluino pair production with subsequent R-parity-violating decays to quarks are presented. This search uses 36.1 fb−1 of data collected... 
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | Fysik | Subatomär fysik | Physical Sciences | Subatomic Physics | Naturvetenskap | Natural Sciences
Journal Article
by Aaboud, M and Aad, G and Abbott, B and Abdinov, O and Abeloos, B and Abidi, S. H and AbouZeid, O. S and Abraham, N. L and Abramowicz, H and Abreu, H and Abulaiti, Y and Acharya, B. S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adye, T and Affolder, A. A and Afik, Y and Agheorghiesei, C and Aguilar-Saavedra, J. A and Ahmadov, F and Aielli, G and Akatsuka, S and Åkesson, T. P. A and Akilli, E and Akimov, A. V and Alberghi, G. L and Albert, J and Albicocco, P and Alconada Verzini, M. J and Alderweireldt, S and Aleksa, M and Aleksandrov, I. N and Alexa, C and Alexander, G and Alexopoulos, T and Alhroob, M and Ali, B and Alimonti, G and Alison, J and Alkire, S. P and Allaire, C and Allbrooke, B. M. M and Allen, B. W and Allport, P. P and Aloisio, A and Alonso, A and Alonso, F and Alpigiani, C and Alshehri, A. A and Alstaty, M. I and Alvarez Gonzalez, B and Álvarez Piqueras, D and Alviggi, M. G and Amadio, B. T and Amaral Coutinho, Y and Ambroz, L and Amelung, C and Amidei, D and Amor Dos Santos, S. P and Amoroso, S and Anastopoulos, C and Ancu, L. S and Andari, N and Andeen, T and Anders, C. F and Anders, J. K and Anderson, K. J and Andreazza, A and Andrei, V and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A. V and Annovi, A and Antel, C and Antonelli, M and Antonov, A and Antrim, D. J. A and Anulli, F and Aoki, M and Aperio Bella, L and Arabidze, G and Arai, Y and Araque, J. P and Araujo Ferraz, V and Arce, A. T. H and Ardell, R. E and Arduh, F. A and Arguin, J-F and Argyropoulos, S and Armbruster, A. J and Armitage, L. J and Arnaez, O and Arnold, H and Arratia, M and Arslan, O and Artamonov, A and Artoni, G and ... and Brookhaven National Lab. (BNL), Upton, NY (United States)
Physics Letters. Section B, ISSN 0370-2693, 10/2018, Volume 785, Issue C
Journal Article
by Aaboud, M and Aad, G and Abbott, B and Abdinov, O and Abeloos, B and Abidi, S.H and AbouZeid, O.S and Abraham, N.L and Abramowicz, H and Abreu, H and Abreu, R and Abulaiti, Y and Acharya, B.S and Adachi, S and Adamczyk, L and Adelman, J and Adersberger, M and Adye, T and Affolder, A.A and Afik, Y and Agatonovic-Jovin, T and Agheorghiesei, C and Aguilar-Saavedra, J.A and Ahlen, S.P and Ahmadov, F and Aielli, G and Akatsuka, S and Akerstedt, H and Åkesson, T.P.A and Akilli, E and Akimov, A.V and Alberghi, G.L and Albert, J and Albicocco, P and Alconada Verzini, M.J and Alderweireldt, S.C and Aleksa, M and Aleksandrov, I.N and Alexa, C and Alexander, G and Alexopoulos, T and Alhroob, M and Ali, B and Aliev, M and Alimonti, G and Alison, J and Alkire, S.P and Allbrooke, B.M.M and Allen, B.W and Allport, P.P and Aloisio, A and Alonso, A and Alonso, F and Alpigiani, C and Alshehri, A.A and Alstaty, M.I and Alvarez Gonzalez, B and Álvarez Piqueras, D and Alviggi, M.G and Amadio, B.T and Amaral Coutinho, Y and Amelung, C and Amidei, D and Amor Dos Santos, S.P and Amoroso, S and Amundsen, G and Anastopoulos, C and Ancu, L.S and Andari, N and Andeen, T and Anders, C.F and Anders, J.K and Anderson, K.J and Andreazza, A and Andrei, V and Angelidakis, S and Angelozzi, I and Angerami, A and Anisenkov, A.V and Anjos, N and Annovi, A and Antel, C and Antonelli, M and Antonov, A and Antrim, D.J and Anulli, F and Aoki, M and Aperio Bella, L and Arabidze, G and Arai, Y and Araque, J.P and Araujo Ferraz, V and Arce, A.T.H and Ardell, R.E and Arduh, F.A and Arguin, J.-F and Argyropoulos, S and Arik, M and Armbruster, A.J and Armitage, L.J and ... and eSSENCE: The e-Science Collaboration and Lund University and Partikelfysik and Lunds universitet and Particle Physics
Journal of High Energy Physics, ISSN 1126-6708, 01/2018, Volume 2018, Issue 1, pp. 1 - 54
A search for heavy neutral Higgs bosons and Z′ bosons is performed using a data sample corresponding to an integrated luminosity of 36.1 fb−1 from... 
Beyond Standard Model | Hadron-Hadron scattering (experiments) | Hadrons | Confidence intervals | Couplings | Large Hadron Collider | Leptons | Fermions | Particle collisions | Searching | Neutrinos | Luminosity | Higgs bosons | Bosons | Fysik | Physical Sciences | Subatomic Physics | Naturvetenskap | Subatomär fysik | Natural Sciences
Journal Article
Journal of High Energy Physics, ISSN 1126-6708, 2017, Volume 2017, Issue 10, pp. 1 - 61
A search is conducted for new resonant and non-resonant high-mass phenomena in dielectron and dimuon final states. The search uses 36.1 fb−1 of proton-proton... 
Beyond Standard Model | Hadron-Hadron scattering (experiments) | Fysik | Subatomär fysik | Physical Sciences | Subatomic Physics | Naturvetenskap | Natural Sciences
Journal Article