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: Understanding the role of parton mass and Casimir color factors in the quantum chromodynamics parton shower represents an important step in characterizing the emission properties of heavy quarks. Recent experimental advances in jet substructure techniques have provided the opportunity to isolate and characterize gluon emissions from heavy quarks. In this Letter, the first direct experimental constraint on the charm-quark splitting function is presented, obtained via the measurement of the groomed shared momentum fraction of the first splitting in charm jets, tagged by a reconstructed D^{0} meson. The measurement is made in proton-proton collisions at sqrt[s]=13 TeV, in the low jet transverse-momentum interval of 15≤p_{T}^{jet ch}<30 GeV/c where the emission properties are sensitive to parton mass effects. In addition, the opening angle of the first perturbative emission of the charm quark, as well as the number of perturbative emissions it undergoes, is reported. Comparisons to measurements of an inclusive-jet sample show a steeper splitting function for charm quarks compared with gluons and light quarks. Charm quarks also undergo fewer perturbative emissions in the parton shower, with a reduced probability of large-angle emissions.
Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D^{0} Mesons in Proton-Proton Collisions at sqrt[s]=13 TeV / Acharya, S; Adamová, D; Adler, A; Aglieri Rinella, G; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, S U; Ahuja, I; Akindinov, A; Al-Turany, M; Aleksandrov, D; Alessandro, B; Alfanda, H M; Alfaro Molina, R; Ali, B; Ali, Y; Alici, A; Alizadehvandchali, N; Alkin, A; Alme, J; Alocco, G; Alt, T; Altsybeev, I; Anaam, M N; Andrei, C; Andronic, A; Anguelov, V; Antinori, F; Antonioli, P; Anuj, C; Apadula, N; Aphecetche, L; Appelshäuser, H; Arata, C; Arcelli, S; Aresti, M; Arnaldi, R; Arsene, I C; Arslandok, M; Augustinus, A; Averbeck, R; Azmi, M D; Badalà, A; Baek, Y W; Bai, X; Bailhache, R; Bailung, Y; Bala, R; Balbino, A; Baldisseri, A; Balis, B; Banerjee, D; Banoo, Z; Barbera, R; Barile, F; Barioglio, L; Barlou, M; Barnaföldi, G G; Barnby, L S; Barret, V; Barreto, L; Bartels, C; Barth, K; Bartsch, E; Baruffaldi, F; Bastid, N; Basu, S; Batigne, G; Battistini, D; Batyunya, B; Bauri, D; Bazo Alba, J L; Bearden, I G; Beattie, C; Becht, P; Behera, D; Belikov, I; Bell Hechavarria, A D C; Bellini, F; Bellwied, R; Belokurova, S; Belyaev, V; Bencedi, G; Beole, S; Bercuci, A; Berdnikov, Y; Berdnikova, A; Bergmann, L; Besoiu, M G; Betev, L; Bhaduri, P P; Bhasin, A; Bhat, M A; Bhattacharjee, B; Bianchi, L; Bianchi, N; Bielčík, J; Bielčíková, J; Biernat, J; Bigot, A P; Bilandzic, A; Biro, G; Biswas, S; Bize, N; Blair, J T; Blau, D; Blidaru, M B; Bluhme, N; Blume, C; Boca, G; Bock, F; Bodova, T; Bogdanov, A; Boi, S; Bok, J; Boldizsár, L; Bolozdynya, A; Bombara, M; Bond, P M; Bonomi, G; Borel, H; Borissov, A; Bossi, H; Botta, E; Bouziani, Y E M; Bratrud, L; Braun-Munzinger, P; Bregant, M; Broz, M; Bruno, G E; Buckland, M D; Budnikov, D; Buesching, H; Bufalino, S; Bugnon, O; Buhler, P; Buthelezi, Z; Butt, J B; Bysiak, S A; Cai, M; Caines, H; Caliva, A; Calvo Villar, E; Camacho, J M M; Camerini, P; Canedo, F D M; Carabas, M; Carnesecchi, F; Caron, R; Castillo Castellanos, J; Catalano, F; Ceballos Sanchez, C; Chakaberia, I; Chakraborty, P; Chandra, S; Chapeland, S; Chartier, M; Chattopadhyay, S; Chattopadhyay, S; Chavez, T G; Cheng, T; Cheshkov, C; Cheynis, B; Chibante Barroso, V; Chinellato, D D; Chizzali, E S; Cho, J; Cho, S; Chochula, P; Christakoglou, P; Christensen, C H; Christiansen, P; Chujo, T; Ciacco, M; Cicalo, C; Cifarelli, L; Cindolo, F; Ciupek, M R; Clai, G; Colamaria, F; Colburn, J S; Colella, D; Colocci, M; Concas, M; Conesa Balbastre, G; Conesa Del Valle, Z; Contin, G; Contreras, J G; Coquet, M L; Cormier, T M; Cortese, P; Cosentino, M R; Costa, F; Costanza, S; Crkovská, J; Crochet, P; Cruz-Torres, R; Cuautle, E; Cui, P; Cunqueiro, L; Dainese, A; Danisch, M C; Danu, A; Das, P; Das, P; Das, S; Dash, A R; Dash, S; David, R M H; De Caro, A; de Cataldo, G; de Cuveland, J; De Falco, A; De Gruttola, D; De Marco, N; De Martin, C; De Pasquale, S; Deb, S; Debski, R J; Deja, K R; Del Grande, R; Dello Stritto, L; Deng, W; Dhankher, P; Di Bari, D; Di Mauro, A; 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[10.1103/PhysRevLett.131.192301]
Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D^{0} Mesons in Proton-Proton Collisions at sqrt[s]=13 TeV
Acharya, S;Adamová, D;Adler, A;Aglieri Rinella, G;Agnello, M;Agrawal, N;Ahammed, Z;Ahmad, S;Ahn, S U;Ahuja, I;Akindinov, A;Al-Turany, M;Aleksandrov, D;Alessandro, B;Alfanda, H M;Alfaro Molina, R;Ali, B;Ali, Y;Alici, A;Alizadehvandchali, N;Alkin, A;Alme, J;Alocco, G;Alt, T;Altsybeev, I;Anaam, M N;Andrei, C;Andronic, A;Anguelov, V;Antinori, F;Antonioli, P;Anuj, C;Apadula, N;Aphecetche, L;Appelshäuser, H;Arata, C;Arcelli, S;Aresti, M;Arnaldi, R;Arsene, I C;Arslandok, M;Augustinus, A;Averbeck, R;Azmi, M D;Badalà, A;Baek, Y W;Bai, X;Bailhache, R;Bailung, Y;Bala, R;Balbino, A;Baldisseri, A;Balis, B;Banerjee, D;Banoo, Z;Barbera, R;Barile, F;Barioglio, L;Barlou, M;Barnaföldi, G G;Barnby, L S;Barret, V;Barreto, L;Bartels, C;Barth, K;Bartsch, E;Baruffaldi, F;Bastid, N;Basu, S;Batigne, G;Battistini, D;Batyunya, B;Bauri, D;Bazo Alba, J L;Bearden, I G;Beattie, C;Becht, P;Behera, D;Belikov, I;Bell Hechavarria, A D C;Bellini, F;Bellwied, R;Belokurova, S;Belyaev, V;Bencedi, G;Beole, S;Bercuci, A;Berdnikov, Y;Berdnikova, A;Bergmann, L;Besoiu, M G;Betev, L;Bhaduri, P P;Bhasin, A;Bhat, M A;Bhattacharjee, B;Bianchi, L;Bianchi, N;Bielčík, J;Bielčíková, J;Biernat, J;Bigot, A P;Bilandzic, A;Biro, G;Biswas, S;Bize, N;Blair, J T;Blau, D;Blidaru, M B;Bluhme, N;Blume, C;Boca, G;Bock, F;Bodova, T;Bogdanov, A;Boi, S;Bok, J;Boldizsár, L;Bolozdynya, A;Bombara, M;Bond, P M;Bonomi, G;Borel, H;Borissov, A;Bossi, H;Botta, E;Bouziani, Y E M;Bratrud, L;Braun-Munzinger, P;Bregant, M;Broz, M;Bruno, G E;Buckland, M D;Budnikov, D;Buesching, H;Bufalino, S;Bugnon, O;Buhler, P;Buthelezi, Z;Butt, J B;Bysiak, S A;Cai, M;Caines, H;Caliva, A;Calvo Villar, E;Camacho, J M M;Camerini, P;Canedo, F D M;Carabas, M;Carnesecchi, F;Caron, R;Castillo Castellanos, J;Catalano, F;Ceballos Sanchez, C;Chakaberia, I;Chakraborty, P;Chandra, S;Chapeland, S;Chartier, M;Chattopadhyay, S;Chattopadhyay, S;Chavez, T G;Cheng, T;Cheshkov, C;Cheynis, B;Chibante Barroso, V;Chinellato, D D;Chizzali, E S;Cho, J;Cho, S;Chochula, 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2023-01-01
Abstract
: Understanding the role of parton mass and Casimir color factors in the quantum chromodynamics parton shower represents an important step in characterizing the emission properties of heavy quarks. Recent experimental advances in jet substructure techniques have provided the opportunity to isolate and characterize gluon emissions from heavy quarks. In this Letter, the first direct experimental constraint on the charm-quark splitting function is presented, obtained via the measurement of the groomed shared momentum fraction of the first splitting in charm jets, tagged by a reconstructed D^{0} meson. The measurement is made in proton-proton collisions at sqrt[s]=13 TeV, in the low jet transverse-momentum interval of 15≤p_{T}^{jet ch}<30 GeV/c where the emission properties are sensitive to parton mass effects. In addition, the opening angle of the first perturbative emission of the charm quark, as well as the number of perturbative emissions it undergoes, is reported. Comparisons to measurements of an inclusive-jet sample show a steeper splitting function for charm quarks compared with gluons and light quarks. Charm quarks also undergo fewer perturbative emissions in the parton shower, with a reduced probability of large-angle emissions.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/262935
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Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
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