Improved Λp elastic scattering cross sections between 0.9 and 2.0  GeV/c as a main ingredient of the neutron star equation of state

Rowley, J; Compton, N; Djalali, C; Hicks, K; Price, J; Zachariou, N; Adhikari, Kp; Armstrong, Wr; Atac, H; Baashen, L; Barion, L; Bashkanov, M; Battaglieri, M; Bedlinskiy, I; Benmokhtar, F; Bianconi, A; Biondo, L; Biselli, As; Bondi, M; Bossù, F; Boiarinov, S; Briscoe, Wj; Brooks, Wk; Bulumulla, D; Burkert, Vd; Carman, Ds; Carvajal, Jc; Celentano, A; Chatagnon, P; Chesnokov, V; Chetry, T; Ciullo, G; Clark, L; Cole, Pl; Contalbrigo, M; Costantini, G; Crede, V; D'Angelo, A; Dashyan, N; De Vita, R; Defurne, M; Deur, A; Diehl, S; Dupré, R; Egiyan, H; Ehrhart, M; El Alaoui, A; El Fassi, L; Eugenio, P; Fedotov, G; Fegan, S; Fersch, R; Filippi, A; Fradi, A; Gavalian, G; Girod, Fx; Glazier, Di; Golubenko, A; Gothe, Rw; Griffioen, K; Guo, L; Hafidi, K; Hakobyan, H; Hattawy, M; Hayward, Tb; Heddle, D; Hobart, A; Holtrop, M; Ilieva, Y; Ireland, Dg; Isupov, El; Jenkins, D; H S, J; Joo, K; Keller, D; Khanal, A; Khandaker, M; Kim, A; Korover, I; Kripko, A; Kubarovsky, V; Kuhn, Se; Lanza, L; Leali, M; Lenisa, P; Livingston, K; Macgregor, Ijd; Marchand, D; Markov, N; Marsicano, L; Mascagna, V; Mccracken, Me; Mckinnon, B; Mclauchlin, C; Meziani, Ze; Migliorati, S; Mineeva, T; Mirazita, M; Mokeev, V; Munevar, E; Munoz Camacho, C; Nadel-Turonski, P; Neupane, K; Niccolai, S; Niculescu, G; O'Connell, Tr; Osipenko, M; Ostrovidov, Ai; Pandey, P; Paolone, M; Pappalardo, Ll; Pasyuk, E; Pogorelko, O; Prok, Y; Reed, T; Ripani, M; Ritman, J; Rizzo, A; Rosner, G; Sabatie, F; Salgado, C; Schmidt, A; Schumacher, Ra; Sharabian, Yg; Shrestha, U; Sokhan, D; Soto, O; Sparveris, N; Strakovsky, Ii; Strauch, S; Tyson, R; Ungaro, M; Venturelli, L; Voskanyan, H; Vossen, A; Voutier, E; Watts, Dp; Wei, K; Wei, X; Wishart, R; Wood, Mh; Yale, B; Yurov, M; Zhang, J; Zhao, Zw

doi:10.1103/PhysRevLett.127.272303

Strange matter is believed to exist in the cores of neutron stars based on simple kinematics. If this is true, then hyperon-nucleon interactions will play a significant part in the neutron star equation of state. Yet, compared to other elastic scattering processes, there is very little data on A-N scattering. This experiment utilized the CEBAF Large Acceptance Spectrometer (CLAS) detector to study the Ap -> Ap elastic scattering cross section in the incident A momentum range 0.9-2.0 GeV/c. These are the first data on this reaction since the 1970s. The new cross sections have significantly better accuracy and precision than the existing world data, and the techniques developed here can also be used in future experiments.

Rowley, J., Compton, N., Djalali, C., Hicks, K., Price, J., Zachariou, N., et al. (2021). Improved Λp elastic scattering cross sections between 0.9 and 2.0 GeV/c as a main ingredient of the neutron star equation of state. PHYSICAL REVIEW LETTERS, 127(27) [10.1103/PhysRevLett.127.272303].

Improved Λp elastic scattering cross sections between 0.9 and 2.0 GeV/c as a main ingredient of the neutron star equation of state

Rowley, J;Compton, N;Djalali, C;Hicks, K;Price, J;Zachariou, N;Adhikari, K P;Armstrong, W R;Atac, H;Baashen, L;Barion, L;Bashkanov, M;Battaglieri, M;Bedlinskiy, I;Benmokhtar, F;Bianconi, A;Biondo, L;Biselli, A S;Bondi, M;Bossù, F;Boiarinov, S;Briscoe, W J;Brooks, W K;Bulumulla, D;Burkert, V D;Carman, D S;Carvajal, J C;Celentano, A;Chatagnon, P;Chesnokov, V;Chetry, T;Ciullo, G;Clark, L;Cole, P L;Contalbrigo, M;Costantini, G;Crede, V;D'Angelo, A^{Writing – Review & Editing};Dashyan, N;De Vita, R;Defurne, M;Deur, A;Diehl, S;Dupré, R;Egiyan, H;Ehrhart, M;El Alaoui, A;El Fassi, L;Eugenio, P;Fedotov, G;Fegan, S;Fersch, R;Filippi, A;Fradi, A;Gavalian, G;Girod, F X;Glazier, D I;Golubenko, A;Gothe, R W;Griffioen, K;Guo, L;Hafidi, K;Hakobyan, H;Hattawy, M;Hayward, T B;Heddle, D;Hobart, A;Holtrop, M;Ilieva, Y;Ireland, D G;Isupov, E L;Jenkins, D;Jo, H S;Joo, K;Keller, D;Khanal, A;Khandaker, M;Kim, A;Korover, I;Kripko, A;Kubarovsky, V;Kuhn, S E;Lanza, L^{Writing – Review & Editing};Leali, M;Lenisa, P;Livingston, K;MacGregor, I J D;Marchand, D;Markov, N;Marsicano, L;Mascagna, V;McCracken, M E;McKinnon, B;McLauchlin, C;Meziani, Z E;Migliorati, S;Mineeva, T;Mirazita, M;Mokeev, V;Munevar, E;Munoz Camacho, C;Nadel-Turonski, P;Neupane, K;Niccolai, S;Niculescu, G;O'Connell, T R;Osipenko, M;Ostrovidov, A I;Pandey, P;Paolone, M;Pappalardo, L L;Pasyuk, E;Pogorelko, O;Prok, Y;Reed, T;Ripani, M;Ritman, J;Rizzo, A^{Membro del Collaboration Group};Rosner, G;Sabatie, F;Salgado, C;Schmidt, A;Schumacher, R A;Sharabian, Y G;Shrestha, U;Sokhan, D;Soto, O;Sparveris, N;Strakovsky, I I;Strauch, S;Tyson, R;Ungaro, M;Venturelli, L;Voskanyan, H;Vossen, A;Voutier, E;Watts, D P;Wei, K;Wei, X;Wishart, R;Wood, M H;Yale, B;Yurov, M;Zhang, J;Zhao, Z W

2021-12-31

Abstract

Strange matter is believed to exist in the cores of neutron stars based on simple kinematics. If this is true, then hyperon-nucleon interactions will play a significant part in the neutron star equation of state. Yet, compared to other elastic scattering processes, there is very little data on A-N scattering. This experiment utilized the CEBAF Large Acceptance Spectrometer (CLAS) detector to study the Ap -> Ap elastic scattering cross section in the incident A momentum range 0.9-2.0 GeV/c. These are the first data on this reaction since the 1970s. The new cross sections have significantly better accuracy and precision than the existing world data, and the techniques developed here can also be used in future experiments.

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				31-dic-2021
			
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	DOI dell'articolo
	
				https://dx.doi.org/10.1103/PhysRevLett.127.272303
			
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				Rilevanza internazionale
			
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				Articolo
			
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				Esperti anonimi
			
	Settore disciplinare dell'articolo (valido fino a 24/06/2024)
	
				Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
			
	Settore disciplinare dell'articolo (valido dal 09/05/2024)
	
				Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
			
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				Con Impact Factor ISI
			
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				CLAS Collaboration
			
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				https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.272303
			
	Citazione
	
				Rowley, J., Compton, N., Djalali, C., Hicks, K., Price, J., Zachariou, N., et al. (2021). Improved Λp elastic scattering cross sections between 0.9 and 2.0  GeV/c as a main ingredient of the neutron star equation of state. PHYSICAL REVIEW LETTERS, 127(27) [10.1103/PhysRevLett.127.272303].
			
	Tutti gli autori
	
						Rowley, J; Compton, N; Djalali, C; Hicks, K; Price, J; Zachariou, N; Adhikari, Kp; Armstrong, Wr; Atac, H; Baashen, L; Barion, L; Bashkanov, M; Battag...espandi
						
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/319239

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Improved Λp elastic scattering cross sections between 0.9 and 2.0 GeV/c as a main ingredient of the neutron star equation of state

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2021-12-31

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